Addmotor U-Trike U-750 in Red standing side-on under a spotlight in a charcoal studio, the light pooled on the floor beneath its three tan-wall tires, under the kicker tilting trike, 750 W, $2,599 and the headline Leans into turns. Locks upright. with the line 12° tilt, torque sensor, a disc on every wheel and a badge reading 61 miles at 12 mph, 180 lb rider, on the throttle, level pavement

Tilting delta trike · 750 W rear-drive motor (1,400 W peak) · torque sensor and half-twist throttle · 48 V 20 Ah Samsung pack, 960 Wh · Fixed Mode, or a Tilting Mode that leans the front frame 12° · 80 mm oil-spring fork · a mechanical disc on every wheel and a parking brake · 340 + 100 lb payload · 20 mph · $2,599 on October 11, 2026 · verified October 11, 2026

Quick Answer — Addmotor's U-Trike U-750 is a $2,599 fat-tire trike whose front frame either locks upright or leans 12° into turns, sized for riders 5'1" to 6'0" carrying up to 340 lb plus 100 lb of cargo. On level pavement at 12 mph on the throttle, our model puts a 180 lb rider about 61 miles from a full charge.

Two checks come before the color: whether your barefoot inseam runs past about 34.3 inches, where the top saddle setting falls short of the pedaling formula (fit), and whether your state's words take in a 750 W, 20 mph three-wheeler (class).

On October 11, 2026, our store listed the U-750 at $2,599 in Blue, Gulf Blue, Mint Green and Red, and Addmotor's page showed every color in stock. This button opens checkout for Red; the other three are Blue, Gulf Blue and Mint Green, all at $2,599. Delivery inside the lower 48 states costs nothing, and if a carrier damages the box, the claim is ours to file.

Order the Red U-750, $2,599

What this review covers

Specification · What it is · The two modes · Against the U-710 · Fit · Motor · Battery · Range · Carrying · Brakes and lights · Fork and tires · The Mercer fit test · Recalls · Class · Trails and parks · Green and red flags · Verdict · Checklist · Buying it from us · FAQ · Limitations · Bottom line · References

How we verified this Addmotor U750 review

Every figure here traces to Addmotor's own record: its U-750 product page with its four tabs, stat strip and product FAQ, its size drawing, its question board, its two videos and the eight posts that print U-750 figures, all read on October 11, 2026. Price, colors and checkout came from our store the same day.

This specification-verified review sets each number beside its source: Addmotor, a statute, our store, a cited study, or arithmetic worked on the page, with the range and fit models' inputs printed under their tables. We sell this trike, and the red flags get the same room as the green.

Written by Milad Ghobadibeygvand, BScN (Western University, 2014). Corrections: support@redtailebikes.com.

Addmotor's U-Trike U-750 specification

As Addmotor publishes it
Layout delta trike, one wheel in front and two behind, with a front frame that tilts on a central pivot or locks upright
Frame "6061 Aluminum Alloy Frame"
Motor "750W Rear-Drive Motor, Peak 1400W"
Torque "750W Rear-Drive (1400WPeak, 90Nm)", in Addmotor's model table of October 8, 2026
Sensor "Torque Sensor"
Pedal assist "7 Level Pedal Assist"
Throttle "Variable Speed Control - 1/2 Twist Throttle"
Controller "Addmotor 25A Controller"
Battery "48V*20 Ah Samsung Battery", 960 Wh; the stat strip adds "UL Certification UL 2271"
Charger "48V*2.0A 5 Pins US Standard DC Charger 5 Pins With Auto Magnetic Suction"
Range "85 Miles (PAS1)"
Top speed "Up to 20 MPH"
Brakes "Mechanical Disc Brakes On Each Wheel", "180mm Front / 2*180mm Rear Rotors on 3 Wheels"
Parking brake "Yes"
Fork "Oil Spring Fork with 80mm of Travel"
Gears "Shimano 7-Speed", a "Shimano 7 Speed Rear Derailleur" and a "KMC Stainless Chain"
Display "Addmotor 5-Inch LCD Display"
Saddle "Saddle with Backrest"
Rims "Aluminum Double Wall"
Taillight "Powered By Main Battery And Controlled By Display with Brake Light Function"
Weight "167 LBS"
Payload "340+100 LBS"
Codes SKUs EB7574 (Blue), EB7579 (Gulf Blue), EB7577 (Mint Green) and EB7572 (Red)

One rigid frame serves every rider in the window; the seat post and the stem do the adjusting. Addmotor's Size & Fit tab prints a single column of figures:

Dimension Addmotor's figure
Rider height 5'1" to 6'0"
Tires 20 × 4.0 in on all three wheels
Reach 15.7 in
Standover 17.3 in (13.7 in on the size drawing)
Saddle height, lowest 33.4 in
Saddle height, highest 37.4 in
Handlebar height 43.3 to 45.3 in
Handlebar width 27.5 in
Wheelbase 51 in
Total length 72.8 in
Total width 33.5 in
Front basket 11 to 13 in long × 7.8 in wide × 8.6 in high
Rear basket 24.4 in long × 20 in wide × 10.6 in high

Addmotor's Size & Fit, Technical and Performance tabs as each displays when clicked, read October 11, 2026, with our price from the same day. Both saddle heights are taken from the ground up to the top of the saddle, the way the drawing's arrows run.

A trike that leans into turns and locks upright

The U-750 is a $2,599 fat-tire trike with a pivot between its front frame and its rear axle, so the rider chooses between a rigid trike and one that banks into corners. Addmotor's product FAQ describes the pivot as a mechanism "that lets the Addmotor U-750 lean into corners while keeping all three wheels planted on the ground."

Addmotor's studio image of the U-Trike U-750 in Blue, side-on: a dark blue low step-through frame with the ADDMOTOR wordmark on the front upright, a brown saddle with a tall backrest, a black battery behind the seat post, wire baskets front and rear, and three fat tires with tan sidewalls

The Blue U-750 side-on, in Addmotor's studio image: one wheel up front, two at the back under the rear basket.

You step over a low frame onto a saddle with a backrest, pedal a seven-speed drivetrain, and steer one front wheel on an 80 mm fork. The motor sits in one rear wheel, which the same FAQ calls "a rear-mounted single-sided motor", with "a transmission structure" added on the left side "to effectively balance the weight".

All three tires are the same 20 × 4.0 fat size. Asked why, Addmotor answered on June 26, 2026 that three identical tires mean "interchangeable wheel parts to cut maintenance costs", among other reasons.

Fixed Mode or Tilting Mode: which one do you ride?

Both, on the same ride: a lever on the handlebar switches them. Addmotor's FAQ says "Use the handlebar-mounted swing-lock lever", and gives each mode a job: "In Fixed Mode, the frame locks upright", while the other mode "allows a 12° frame tilt, which feels different from standard trikes."

Addmotor's close-up of a black lever on the U-750's steering column: a round dial lettered TENGJIA with a minus sign, a plus sign and a graded scale between them, a slotted arm beside it, and a bolt above marked 14-15N.m with an angle scale

The control on the steering column that Addmotor labels the swing control lever, in its close-up.

Fixed Mode Tilting Mode
What the front frame does locked upright leans up to 12°
What Addmotor says it rides like "a traditional tricycle" it "feels different from standard trikes"
Who Addmotor points to it "beginners and seniors" riders willing to practice "in an open area"
What to expect "minimal practice" "slight swaying at low speeds is normal"

Each quoted cell is Addmotor's product FAQ, read October 11, 2026. The rows are Addmotor's descriptions of its own mechanism.

Start in Fixed Mode and switch to Tilting Mode once the trike feels familiar. Addmotor's FAQ puts the adjustment at "10–20 turns" for most riders, and one of the two owner reviews on Addmotor's U-750 page, dated July 15, 2026, reads: "It only took me a few rides to get comfortable with the tilting system and learn how to lean naturally while riding."

Addmotor's own video of the trike, posted June 11, 2026, cuts between the two settings with the narration "Lock mode activate" and "Tilt mode activate"; save the first laps in Tilting Mode for an empty lot, the FAQ's "open area".

An owner who reviewed his blue U-750 on Reddit on August 3, 2026, 5'11" and 235 lb, rides it in Fixed Mode to stores and around town and switches to Tilting Mode on a riverside trail; he writes that it has "power, range, good looks, and you can lean around corners when you want/can." His advice on the lever: pull over and stop before switching into Tilting Mode.

Addmotor's four studio views of a red U-750, two from behind and two from the front, each pair showing the front frame and handlebar leaned to opposite sides while both rear wheels stay on the ground

Four views of a red U-750 in Addmotor's gallery: the front frame leans to either side while the rear axle and its two wheels stay level.

U-750 or U-710: Addmotor's two tilting trikes on our shelf

Addmotor's other tilting trike, the U-710, folds and weighs 90 lb, and our store sells it for $200 less. Addmotor's post of August 26, 2026 sets the two side by side and gives them the same powertrain: the U-710 "shares the same proven powertrain as the U750".

U-Trike U-750 U-Trike U-710
Our price, October 11, 2026 $2,599 $2,399
Frame "167 LBS (Non-folding, ultra-rigid)" "90 LBS (Collapses to 45.2" x 39.3" x 34.2")"
Tires "20" x 4.0" All-Terrain Fat Tires" "20" x 3.0" Agile Street Tires"
Standover "17.3" (Low step-thru)" "11.8" (Ultra-low step-thru)"
Seat and storage "Saddle with Backrest · Dual Racks (340+100 lbs)" "Adjustable Ergonomic Seat · Rear Rack (Up to 100 LBS)"
Saddle range 33.4 to 37.4 in off the ground 27.5" to 35.4"

Every quoted cell, and the U-710's saddle range, is Addmotor's August 26, 2026 comparison; the U-750's saddle range is its Size & Fit tab's, and both prices are our store's. Addmotor's U-710 page priced it at $2,399 on October 11, 2026, the same as ours.

The U-750 keeps the fat tires, the backrest, two baskets and a saddle that sits 2 inches higher at its top; the U-710 folds, weighs 77 lb less and steps 5.5 inches lower. If the trike must ride in a car or climb a step into the house, the U-710's listing carries the same two modes.

Pick by where it parks: the rigid U-750 for a garage or a ground-floor room, the folding U-710 for a car trunk or a flight of stairs. The U-750 weighs 167 lb and keeps its fat tires and backrest; the U-710 weighs 90 lb in Addmotor's comparison and costs $200 less on our store.

Who the U-750 fits: 5'1" to 6'0" and a 17.3-inch step

Across Addmotor's 5'1" to 6'0" window, the pedaling formula puts the median rider's saddle top 31.8 to 38.1 inches from the pedal. Addmotor's saddle heights, 33.4 to 37.4 inches, are measured from the ground, so a leg longer than about 34.3 inches asks the formula for more than the highest setting gives, even before the pedal's own height off the ground counts.

The formula puts the saddle 109% of your inseam from the pedal axle at the bottom of the stroke, the rule Peveler and colleagues weighed against two other methods in 2005. Because Addmotor states the saddle's height off the ground and not the bracket height or crank length, each row below is a target distance that you confirm with a tape measure on the trike.

Size yourself in three steps:

  1. Measure your inseam barefoot. With your back to a wall, draw a hardcover book up snug between your legs where a saddle would sit, then measure from the floor to its upper edge.
  2. Find your height in the saddle table, then read the ceiling table for how often riders your height outgrow the top setting.
  3. On the trike, turn one crank down in line with the seat post and measure from the saddle's top to the middle of that pedal; if the post runs out before your row's distance, email us before you ride.

Addmotor's U-Trike U-750 size drawing: rider height 5'1" to 6'0", front rack 11 to 13 by 7.8 by 8.6 inches, rear rack 24.4 by 20 by 10.6 inches, tire size 20 by 4.0, and a side view of the red trike with two saddles drawn, labeled max saddle height 37.4, mini saddle height 33.4, handlebar width 27.5, handlebar height 43.3 to 45.3, reach 15.7, standover height 13.7, total width 33.5, wheelbase 51 and total length 72.8 inches

The size drawing Addmotor publishes, showing the saddle at its lowest and at its highest setting. Its standover label reads 13.7 inches where the Size & Fit tab reads 17.3; the formula subsection explains why nothing is measured on the drawing.

How high does my saddle go?

Start from your height and follow its row to the distance between the saddle's top and the pedal axle. Column three is the 109% rule worked on that height's median inseam; the last two columns repeat it at 106%, where the range Ferrer-Roca and colleagues report begins, and at 110.4%, where the range they propose ends.

Your height Typical inseam Saddle top to pedal axle At 106% At 110.4%
5'1" 27.7–30.3 in 31.8 in 31.0 in 32.3 in
5'2" 28.0–31.1 in 32.2 in 31.3 in 32.6 in
5'3" 28.7–31.6 in 32.8 in 31.9 in 33.2 in
5'4" 29.1–32.2 in 33.3 in 32.3 in 33.7 in
5'5" 29.7–32.6 in 33.8 in 32.9 in 34.3 in
5'6" 30.2–33.5 in 34.5 in 33.6 in 34.9 in
5'7" 30.7–33.9 in 35.1 in 34.1 in 35.5 in
5'8" 31.1–34.3 in 35.6 in 34.6 in 36.0 in
5'9" 31.7–34.8 in 36.1 in 35.1 in 36.6 in
5'10" 32.2–35.5 in 36.8 in 35.8 in 37.3 in
5'11" 32.9–36.1 in 37.4 in 36.4 in 37.9 in
6'0" 33.2–36.7 in 38.1 in 37.0 in 38.6 in

For each height, the inseam column spans the 5th to the 95th percentile of the 6,068 people the US Army's ANSUR II survey measured, and all three distances are worked from the median. Your own inseam beats your row: add 1.09 inches of saddle for every inch of leg.

Past a 34.31-inch barefoot inseam, the top saddle setting falls short of the 109% distance, and past 35.28 inches it falls short of 106% as well. Addmotor's 37.4-inch top setting is all either figure needs, since even at the bottom of its stroke the pedal is off the ground:

Your height Median inseam Can't reach 109%, of 100 Can't reach 106%, of 100
5'1" 29.2 in 0 0
5'2" 29.5 in 0 0
5'3" 30.1 in 0 0
5'4" 30.5 in 0 0
5'5" 31.0 in 0 0
5'6" 31.7 in 1 0
5'7" 32.2 in 2 0
5'8" 32.6 in 5 0
5'9" 33.1 in 13 2
5'10" 33.8 in 28 7
5'11" 34.3 in 51 17
6'0" 34.9 in 74 36

Counted over the same survey's bodies at each height. Read each count as a minimum: the pedal's height above the ground is not on Addmotor's tabs, and counting it could only add riders.

Addmotor prints the same 5'1" to 6'0" window on its tab and its drawing. Within it, from 5'6" up some riders need more saddle than the top setting reaches, from 1 of 100 at 5'6" to 13 at 5'9" and 74 at 6'0", so a tall rider should hold a barefoot inseam against the ceiling table before ordering.

Can I step through it at a stop?

Yes: every surveyed rider from 5'1" to 6'0" clears the 17.3-inch figure barefoot. In the 5'1" row, 95 of every 100 riders keep 10.4 inches or more between inseam and frame at that height.

Your height Typical inseam Clear the 17.3 in standover (tab, post), of 100 Clear the 13.7 in standover (size drawing), of 100
5'1" 29.2 in 100 100
5'2" 29.5 in 100 100
5'3" 30.1 in 100 100
5'4" 30.5 in 100 100
5'5" 31.0 in 100 100
5'6" 31.7 in 100 100
5'7" 32.2 in 100 100
5'8" 32.6 in 100 100
5'9" 33.1 in 100 100
5'10" 33.8 in 100 100
5'11" 34.3 in 100 100
6'0" 34.9 in 100 100

Every row compares the barefoot inseams at that height, from the same survey, with both standover heights Addmotor prints, and the median leg sits in the middle column. The tab and Addmotor's August 26, 2026 post print 17.3 inches, the drawing 13.7, and the clearances use the higher figure, so a lower step only adds room.

Addmotor's FAQ says the low frame makes mounting easy "without high leg lifts", and it adds: "If you have any medical condition, please check with your doctor before riding to ensure it's right for you."

Will I lean forward to reach the bars?

The lean is left uncomputed, because Addmotor publishes no grip position measured from the saddle. The Size & Fit tab gives a 15.7-inch reach and a handlebar 43.3 to 45.3 inches high but no seat angle or bracket height, and the drawing cannot fill the gap because its arrows disagree on scale (the formula subsection).

Even at the lowest bar setting, the 43.3-inch handlebar on Addmotor's Size & Fit tab sits 5.9 inches above the 37.4-inch top saddle setting, so the bar rides higher than the saddle at every combination; set the saddle to your row, then take a lap and judge the reach.

How much weight goes through my hands?

Left uncomputed too: hand load follows from the lean, and Addmotor publishes no grip position to compute the lean from. For scale, ten road racers riding on their brake hoods in Carahalios's 2015 laboratory study carried 15% of their weight on the bars, a stretched position the U-750's tall bar does not put you in.

Ride with soft elbows and a tall back. If your palms go numb or tingle, padded gloves are the fix: they cut palm pressure by 10 to 28% across the 36 riders Slane and colleagues measured.

Addmotor's close-up of the U-750's saddle: a brown seat with stitched edges and a small ADDMOTOR mark, below a tall brown backrest pad on a black frame and post

The saddle and its backrest, in Addmotor's close-up.

How do I set the saddle at home?

With your heel on the pedal at the bottom of its stroke, raise the saddle to the height where that leg goes straight. Back on the ball of your foot, the knee keeps a little bend; Peveler and colleagues' 2005 comparison found the heel method left 70% of 19 trained cyclists within the 25 to 35 degree knee bend the cycling literature recommends against injury.

Retighten the seat-post clamp after each change, and ride a lap before moving it again. If the post tops out while your knee still bends with your heel on the pedal, stop there: your leg wants more saddle than the U-750 reaches, the case the tall-rider flag answers.

The fit arithmetic, step by step

One rule builds the saddle table: 1.09 times your inseam, measured from the pedal axle at the stroke's bottom to the top of the saddle. Take a 5'8" rider with that height's median inseam, 32.64 inches to two decimals: the rule calls for 35.6 inches, while LeMond's, 88.3% of the inseam measured from the crank axle, comes to 28.8 inches on the same leg.

Those two rules start from different points, and only a crank length would connect them; with none from Addmotor, each figure is read against its own rule. The ceiling table uses neither point: it divides 37.4 by 1.09 for 34.31 inches of inseam and by 1.06 for 35.28.

Input Value Source
Rider bodies 6,068 (4,082 men, 1,986 women) US Army ANSUR II, 2012
Saddle rule 109% of inseam; columns at 106% and 110.4% Peveler et al., 2005; Ferrer-Roca et al., 2012
Saddle height off the ground 33.4 to 37.4 in Addmotor's Size & Fit tab
Standover 17.3 in (13.7 in on the drawing) Addmotor's Size & Fit tab
Rider window 5'1" to 6'0" Addmotor's Size & Fit tab
Bracket height, crank length, seat angle, grip position not published Addmotor's tabs, read October 11, 2026

We take no measurement from Addmotor's drawing: its dimension arrows disagree on scale. Whichever arrow sets the scale, no more than two of the others come out within 3.5%:

Line Wheelbase scale Length scale Top-saddle scale
top saddle (37.4 in) +6.8% +1.8% —
low saddle (33.4 in) +6.1% +1.1% −0.7%
standover (13.7 in) +12.6% +7.4% +5.5%
wheelbase (51 in) — −4.7% −6.4%
total length (72.8 in) +4.9% — −1.8%
reach (15.7 in) −1.3% −5.9% −7.6%

How far each arrow, read tip to tip on Addmotor's drawing and divided by the scale its column names, lands from the figure printed beside it; a dash marks the line that sets the scale. The handlebar arrow is left out: its label is a range, 43.3 to 45.3 inches, over one drawn bar. The arrows imply anywhere from 14.9 to 17.0 pixels per inch.

Your barefoot inseam decides this trike: hold it against the ceiling table above before you pay. This button opens checkout for Blue; Gulf Blue costs no more.

Buy the Blue U-750

One 750 W rear-drive motor on a 48 V system

A single 750 W motor drives one rear wheel, with a 1,400 W peak and, in Addmotor's model table, 90 N·m of torque. The Technical tab lists a "750W Rear-Drive Motor, Peak 1400W" with an "Addmotor 25A Controller", and Addmotor's post of October 8, 2026 gives the U-750's row as "750W Rear-Drive (1400WPeak, 90Nm)".

The assist answers the force on the pedals, and the throttle moves you with your feet still. The Performance tab lists a "Torque Sensor" with "7 Level Pedal Assist" and a "Variable Speed Control - 1/2 Twist Throttle", and Addmotor's answer of June 1, 2026 explains the sensor plainly: "The harder you pedal, the more assistance the motor provides".

Behind the assist sits a "Shimano 7-Speed" drivetrain with a "KMC Stainless Chain", read on the same Performance tab, and an "Addmotor 5-Inch LCD Display" on the bar.

The top speed is "Up to 20 MPH" on the Technical tab. The class section covers how each state reads a 750 W motor that tops out at 20 mph.

A 960 Wh Samsung pack

Multiply 48 volts by 20 amp-hours and the pack holds 960 watt-hours. The Technical tab lists a "48V*20 Ah Samsung Battery", and the stat strip adds "UL Certification UL 2271"; if your building or insurer wants the pack's certificate itself, email us and we will request it from Addmotor in writing.

A charge from empty takes about 10 hours on the 2 A charger in the box: 20 amp-hours at 2 amps, before charging losses. The tab lists the charger as a "48V*2.0A 5 Pins US Standard DC Charger 5 Pins With Auto Magnetic Suction".

Charging it costs pennies. A full 960 Wh at the US average residential price of 18.31 cents per kWh in July 2026, from the Energy Information Administration's Table 5.6.A, comes to about 18 cents before the charger's own losses; ridden 1,000 miles a year at 12 mph on the throttle, the pack takes about 15.8 kWh, about $2.89 a year.

Addmotor's own posts put three numbers on looking after the pack:

  • the battery-health post says to recharge "when it has a 10%-15% charge left";
  • the maintenance guide says to "keep your battery charge between 20% and 80% for the best lifespan";
  • the same guide says to charge "at room temperature (between 10 and 25 degrees Celsius)", which is 50 to 77 °F.

Range: how far a charge takes the U-750

On a full pack, throttle only and on level pavement, a 180 lb rider covers about 68 miles at 10 mph, 61 at 12 and 37 at the 20 mph top speed; load the full 440 lb and the 12 mph figure falls to about 42.

Easy pedaling at 75 W stretches the 12 mph ride to about 113 miles, and a 6% grade held at 10 mph on the throttle cuts a charge to about 12 miles.

Work out your own U-750 day in three steps:

  1. Pick your pace's row and your pedaling's column in the first two tables.
  2. Price the climbs: on the throttle at 10 mph, each 1,000 feet costs 198 to 241 Wh on a 4 to 8% grade (the hills table).
  3. Correct that figure for what you carry and the day's temperature, and count on 85% of the pack.

Each row is one steady ride, built from Addmotor's figures, a comparable motor's published data, drum measurements of ten fat-bike tires and a cycling-power model validated on an open road; the formula subsection works one ride through from the tires to the cells.

How many miles does each speed give, and how much do your legs add?

On the throttle, every step up in speed costs miles. The air's resistance grows with the square of speed, so a mile at 20 mph draws 25.8 Wh from the pack where a mile at 10 draws 14.2 Wh.

Speed, flat Per mile Full charge With 15% kept
8 mph 13.0 Wh 74 mi 63 mi
10 mph 14.2 Wh 68 mi 57 mi
12 mph 15.8 Wh 61 mi 52 mi
15 mph 18.9 Wh 51 mi 43 mi
18 mph 22.8 Wh 42 mi 36 mi
20 mph 25.8 Wh 37 mi 32 mi

Throttle only, 180 lb aboard, level pavement, air at 77 °F. The last column leaves 15% of the pack unused, the upper end of Addmotor's "10%-15%" recharge advice.

Pedaling lengthens every row. The model counts 75 W as easy pedaling and 150 W as steady; with the motor idle, those efforts would carry a 180 lb rider on this 167 lb trike at about 7.8 and 12.0 mph on level ground, which shows which column you can hold.

Speed, flat Throttle only Easy pedaling (75 W) Steady pedaling (150 W)
12 mph 61 mi 113 mi legs alone
15 mph 51 mi 74 mi 129 mi
18 mph 42 mi 54 mi 74 mi
20 mph 37 mi 45 mi 57 mi

Each cell is a full pack with 180 lb aboard on level pavement; "legs alone" means 150 W from you holds that pace with the motor idle. Past 100 miles, a cell depends chiefly on your legs and on the motor's light-load losses, the part of the model checked least (Limitations item 5).

Settle on a pace, then on how hard you will pedal; the assist level just divides the work between you and the motor.

Does shifting gears save battery?

Only through the work your legs add. The motor turns its rear wheel and your chain reaches the drive by its own path, so at a given speed and grade the pack spends less only when you pedal harder:

Your ride Throttle only Easy pedaling (75 W) Steady pedaling (150 W)
12 mph, flat 15.8 Wh 8.5 Wh 0.0 Wh
15 mph, flat 18.9 Wh 13.0 Wh 7.4 Wh
12 mph, 4% grade 56.4 Wh 46.2 Wh 36.7 Wh
12 mph, 8% grade — 99.3 Wh 85.7 Wh

Watt-hours from the pack per mile, 180 lb aboard, 77 °F air. A dash marks a pace the model's motor cannot keep on that grade by itself: 12 mph up 8% is beyond it, and the climbing table below shows it holding 11.3 mph there.

Shift to whatever gear lets you spin at an easy cadence, because only a gear you can turn lets your legs relieve the pack; at 12 mph on the flat, a steady 150 W from you leaves the motor with nothing to do.

What does a climb cost the pack?

Climbing 1,000 feet at 10 mph on the throttle draws 198 to 241 Wh beyond what the same miles cost on the flat, across 4 to 8% grades. Lifting 347 lb, the 180 lb rider and the 167 lb trike, through 1,000 feet takes 131 Wh at the wheels; heat in the motor and the pack takes the rest.

Grade Per mile, throttle Full charge, throttle Full charge, easy pedaling
2% 33 Wh 29 mi 42 mi
4% 56 Wh 17 mi 22 mi
6% 83 Wh 12 mi 14 mi
8% 116 Wh 8 mi 10 mi

Every row: 10 mph, 180 lb aboard. The descent earns no energy back here, so the figures cover the climb only.

Uphill, the motor's pull decides your speed first, and the pack decides your miles after. Each grade has a steady pace the motor can hold, and Addmotor's full 440 lb pulls it down:

Grade 180 lb 440 lb 440 lb, easy pedaling
4% 16.9 mph 11.5 mph 12.4 mph
6% 13.7 mph 8.6 mph 9.4 mph
8% 11.3 mph 6.8 mph 7.4 mph
10% 9.5 mph past the model's motor 6.1 mph
12% 8.2 mph past the model's motor 3.0 mph

The fastest pace the model's motor holds on each grade, with 180 lb or the full 440 lb aboard, torque capped at Addmotor's 90 N·m. Steady climbing, no run-up; "past the model's motor" means the motor alone cannot hold even 2 mph there, and the right-hand column adds 75 W of easy pedaling.

With 440 lb aboard, a 10% street is past the motor alone in the model; shift low and add easy pedaling, which holds about 6.1 mph there.

Price a hilly day as its level miles with the climbs added. Twenty level miles at 12 mph on the throttle use about 316 Wh, and 1,000 feet of climbing at 6% puts about 218 Wh on top, for about 534 Wh in all, 65% of the 816 Wh in 85% of the pack.

Does rider weight affect the U-750's range?

Load costs a little on the flat and a lot uphill. Weight adds to rolling drag and to the pull of the slope while the air's drag stays put, so the steeper the road, the wider the gap between a heavy load and a light one.

You plus your load 12 mph flat, throttle 15 mph flat, throttle 8% climb, 10 mph
100 lb 70 mi 57 mi 12 mi
130 lb 66 mi 55 mi 10 mi
180 lb 61 mi 51 mi 8 mi
220 lb 57 mi 48 mi 7 mi
260 lb 54 mi 46 mi past the model's motor
340 lb 48 mi 42 mi past the model's motor
440 lb 42 mi 37 mi past the model's motor

Count yourself and all your cargo in the left column; the model adds the trike's own 167 lb, and each cell runs on the throttle alone. Addmotor's rider limit is the 340 lb row, its full payload the 440 lb row. In the 8% column, "past the model's motor" means the motor alone cannot hold 10 mph on that grade; the climbing table gives the pace it does hold.

Going from 180 lb aboard to the full 440 lb takes the 12 mph ride from about 61 miles down to 42, and the 15 mph ride from 51 to 37. Your own weight counts against the 340 in Addmotor's "340+100 LBS", the rider's share; the 100 is cargo in the basket.

The trike's own weight moves the figures less than the rider's. At the 110 lb printed in Addmotor's April 27, 2026 specification table, the 12 mph ride computes to about 67 miles against 61 at the tab's 167 lb:

Ride, throttle At 167 lb (Technical tab) At 110 lb (April 2026 posts)
12 mph, flat 61 mi 67 mi
15 mph, flat 51 mi 55 mi
10 mph, 8% climb 8 mi 11 mi

Throttle only, 180 lb aboard. Addmotor prints 167 lb on its Technical tab and in its posts of June 18 and August 26, 2026, and 110 lb in two April 2026 tables; the model uses the tab's figure.

How much range does cold weather take away?

About a fifth at freezing. At 12 mph on the throttle, a 77 °F day's 61 miles become about 48 at 32 °F and about 43 at 14 °F.

Air Pack energy vs 77 °F 12 mph flat, throttle
95 °F 99% 64 mi
77 °F 100% 61 mi
68 °F 98% 57 mi
50 °F 93% 51 mi
41 °F 91% 49 mi
32 °F 89% (80–93) 48 mi (43–50)
14 °F 82% (40–83) 43 mi (21–43)

Level ground, 180 lb aboard, and a pack assumed to be at the air's temperature. The middle figures interpolate the energy McMaster University measured from an LG HG2 cell at a 0.5C discharge at 77, 50, 32 and 14 °F, and Samsung's cell data sheets and Casado and colleagues' 2025 measurements supply the brackets.

Cold works on three things at once. The cells give back about 89% of their 77 °F energy at 32 °F (80 to 93% across the sources), and air at that temperature is about 9% denser by the gas law of the U.S. Standard Atmosphere.

Third comes the rubber: the model adds 0.5% to rolling resistance for every °F under 77 °F (0.9% per °C), a slope that sits between Rothhämel's fit for a 42 mm tire and Bicycle Rolling Resistance's road-tire average, and stops adding below 41 °F.

In winter, bring the battery in to charge. Addmotor's maintenance guide asks for charging between 50 and 77 °F.

Do the tires or the riding position change the range?

On level ground the tire is the bigger lever. Addmotor names the U-750's tires by size only, 20" X 4.0" on its Size & Fit tab, with no casing or model, so the model uses the median of the ten fat-bike tires Bicycle Rolling Resistance measured on its drum, bracketed by the lowest and the highest of the ten.

Rolling resistance 12 mph flat, throttle 15 mph flat, throttle
0.0070 · the lowest of ten fat tires 75 mi 61 mi
0.0105 · the median of ten fat tires (used) 61 mi 51 mi
0.0126 · the highest of ten fat tires 55 mi 46 mi

To an empty pack, 180 lb aboard on level ground. Addmotor's images show a knobbed tread, so the bottom row is the one to read for a tire that rolls heavier than the median.

Inflate to the pressure marked on the sidewall. On the air side, the model takes 0.640 m², the drag area Tengattini and Bigazzi measured on 37 upright cruiser riders; their 0.603 m² for 90 mountain-bike riders would add a mile at 12 mph, 61 to 62.

Addmotor's 85 miles on PAS1, as a steady ride

Addmotor's figure is 85 miles on pedal-assist level 1, and in the model it takes your legs to reach it. The Technical tab says "85 Miles (PAS1)", and the product FAQ "up to 85 miles on a single charge in PAS1 mode".

Figure Throttle Easy (75 W) Steady (150 W)
85 mi, PAS1 (tab) not reached 13.9 mph 17.2 mph

A cell gives the steady pace on level ground at which the model uses all 960 Wh over exactly 85 miles, 180 lb aboard. On the throttle alone the model never stretches a charge that far: its longest is about 81 miles, at a walking-pace 4.4 mph.

Read that way, Addmotor's 85 miles is a ride of about 14 mph with easy pedaling, or about 17 mph with steady pedaling, the kind of ride PAS1 asks of you.

Plan on 85% of your row. Follow Addmotor's advice to recharge "when it has a 10%-15% charge left" and about 52 of the 61 throttle miles at 12 mph remain yours to plan on.

For the longest pack life, ride inside the 20% to 80% band. Addmotor's maintenance guide advises you to "keep your battery charge between 20% and 80% for the best lifespan"; the band is 576 Wh, 60% of the pack:

Speed, flat 20–80% band, throttle 20–80% band, easy pedaling
8 mph 44 mi 262 mi
10 mph 41 mi 104 mi
12 mph 36 mi 68 mi
15 mph 31 mi 44 mi
18 mph 25 mi 32 mi
20 mph 22 mi 27 mi

Within the 20 to 80% band, level ground, 180 lb aboard.

Plan from your row with 15% unspent, and price each climb on its own. Every 1,000 feet at 10 mph on the throttle costs 198 to 241 Wh on 4 to 8% grades. With 15% unspent, a 180 lb rider on level ground on the throttle has about 52 miles at 12 mph, or 43 at 15.

A 20-mile day at 12 mph that climbs 1,000 feet at 6% needs about 534 Wh on the throttle, 65% of the 85% you plan on. Give support@redtailebikes.com your distance, your climbing, your load and your pace, and we will model that exact day for you. Mint Green is on this button, and Red matches its price.

Mint Green U-750, $2,599

The formula behind the range tables

A steady speed needs a steady flow of power at the wheels, and for constant speed in still air the model Martin and colleagues validated on an open road in 1998 writes it as:

P = v × [ m × g × (Crr × cos θ + sin θ) + ½ × ρ × CdA × v² ]

P is the power at the wheels and v the road speed; m is the mass of trike, rider and load, g is gravity and θ the slope's angle; Crr is the tires' rolling resistance, ρ the air's density and CdA the rider's drag area. Tires and slope fill the first term and the air the second, and three steps carry the result back from the wheels to the pack:

  1. Your pedaling reaches the wheels through the chain, which Martin and colleagues measured at 97.7% efficient, and the motor supplies whatever else the ride asks.
  2. The motor takes its shape from a comparable unit's published curve: Bafang's RM G0H0, at 510 rpm with no load and 426 rpm at rated load on 48 V in the 2021 OEM workbook, with an efficiency of "≥ 80" percent. Held at 48 V and the U-750's 750 W, the curve's unloaded speed is set so that 180 lb on the throttle on the flat just reaches Addmotor's 20 mph: 21.9 mph in the model.
  3. The pack sheds energy as heat under discharge, at the rate Arango, Lopez and Ceren measured on a 48 V pack.

Miles = 960 Wh × the share of the pack's energy usable at that temperature ÷ watt-hours per mile, and watt-hours per mile is the power drawn from the cells divided by the speed in mph.

Input Value used Where it comes from
Trike 167 lb, with the battery Addmotor's Technical tab
Rider and load 180 lb; the weight table also runs 100, 130, 220, 260, 340 and 440 340 lb rider and 440 lb in all: "340+100 LBS" on the Technical tab
Battery 48 V × 20 Ah = 960 Wh Addmotor's Technical tab
Motor 750 W at its rated speed, 80% at the rated point, torque capped at 90 N·m Bafang OEM workbook 2021, RM G0H0; Addmotor's rating, 20 mph and torque figure
Wheel 24.0 in (609 mm) across, the 20 × 4.0 tire's nominal diameter Addmotor's tire size; the 406 mm bead seat of a 20-inch decimal tire in Sheldon Brown's ISO size chart, plus twice the 4.0-inch tire
Rolling resistance 0.0105, the median of ten fat-bike tires Bicycle Rolling Resistance, fat-bike tests
Drag area 0.640 m², 37 upright cruiser riders Tengattini and Bigazzi, 2018
Chain 97.7%, your pedaling only Martin et al., 1998
Battery losses 3.1% at 12 mph, more at climbing currents Arango, Lopez and Ceren, 2021
Air 77 °F at sea-level pressure, 1.184 kg/m³ U.S. Standard Atmosphere, 1976
Cold the share of a cell's energy left at each temperature McMaster University's LG HG2 cell data

One level-pavement ride, worked back from the tires to the cells: 180 lb aboard, 12 mph on the throttle. Rider and trike together weigh 157.4 kg, and 12 mph needs 145.8 W at the wheels: 87.3 W goes to rolling resistance and 58.5 W to the air.

At 12 mph the 24-inch rear tires make 168 rpm. Fitted to Bafang's published figures, the model's motor carries 1.49 N·m of torque per amp, a 0.405 Ω winding and a 0.83 A no-load current, and this ride asks it for 8.3 N·m on 6.4 A at 79% efficiency, below its rated 80% because the load is light.

With the pack's own losses added, the cells deliver 189.7 W, which is 15.81 Wh per mile at 12 mph; 960 ÷ 15.81 gives about 60.7 miles, or 51.6 with 15% kept in reserve.

Before producing a single table, the model had to reproduce two published results:

Check Published figure This model
Road physics, Martin and colleagues' worked example 45.7 W for tires and grade, 158.8 W for the air 45.7 W and 158.8 W
The comparable motor at Bafang's rated point at least 80% efficient 80%

Check one is Appendix I of Martin and colleagues' paper (8.36 m/s, a 90 kg system, a 0.3% grade), and check two the RM G0H0's rated point in Bafang's workbook. At 82% efficiency instead, 2 points over Bafang's floor, the same 12 mph throttle ride would run 66 miles rather than 61 (Limitations item 4).

With no owner's ride to an empty pack on record for the U-750 (Limitations item 8), the tables stand on those two checks.

Carrying: 340 lb on the saddle, 100 in the basket

The Technical tab divides the 440 lb payload as "340+100 LBS": 340 for the rider and 100 for cargo. Its product FAQ puts it in words, "a total payload of 440 lbs (340 lbs for the rider and 100 lbs for the rear cargo basket)", and its post of June 29, 2026 calls 340 lb "a 340 lbs rider limit".

Earlier posts printed a slightly higher split. Addmotor's specification tables of April 25, April 27 and April 28, 2026 read "450 lbs (350 lbs rider + 100 lbs cargo)"; ride to the tab's 340 lb, and email us before ordering if you weigh between 340 and 350.

Both baskets come in the box. Addmotor's FAQ lists "the main trike assembly, a complete cargo rack set (front and rear racks), a high-capacity Samsung battery, and a dedicated charger"; the rear basket measures 24.4 by 20 by 10.6 inches and the front 11 to 13 by 7.8 by 8.6.

The weight table prices each load in miles; its 340 lb row is the most a rider can weigh under Addmotor's split.

Brakes, lights and parking

Three mechanical discs, one on each wheel, plus a parking brake. The Performance tab lists "Mechanical Disc Brakes On Each Wheel", "180mm Front / 2*180mm Rear Rotors on 3 Wheels" and a parking brake.

Addmotor's image of three mechanical disc brake calipers over three drilled steel rotors on the left, and on the right the U-750's left grip in brown leather beside a black brake lever marked ADDMOTOR and a silver shifter marked SHIMANO

The three calipers and rotors, with the left grip, brake lever and shifter, in Addmotor's image.

Set the parking brake before you load the baskets or step off. The lever holds the trike while you lift groceries in, and Addmotor's post for new trike riders advises a first ride somewhere with "no obstacles or tight turns".

Both lights run off the main pack, and the tail lamp signals. The Performance tab gives the taillight as "Powered By Main Battery And Controlled By Display with Brake Light Function", and Addmotor's April 28, 2026 specification table lists it as "EB 2.0 5-in-1 (Brake, Turn, Hazard, Running)".

Addmotor's graphic of the U-750's red tail lamp lit across its full width with amber corners, and five smaller lamps below it labeled Danger Light, Smart Brake Signals, Flashing Light, Left Turn Signals and Right Turn Signals

The tail lamp's five modes, in Addmotor's graphic.

An 80 mm fork on three 20 × 4.0 tires

Suspension comes from the fork alone, on three tires 4 inches wide. The Performance tab lists an "Oil Spring Fork with 80mm of Travel", and under the rider sits the "Saddle with Backrest", whose backrest Addmotor's answer of June 26, 2026 says can be swapped: "If the backrest isn’t to your liking, other seat cushions are available for replacement."

Addmotor's close-up of the U-750's front end: a black suspension fork lettered ADDSHOX holding a 20-inch wheel with a disc rotor, under the frame's ADDMOTOR lettering, with the rest of the trike faded

The ADDSHOX fork and the front wheel, in Addmotor's close-up.

Four-inch tires on 20-inch wheels: 20" X 4.0" on the Size & Fit tab, on all three wheels. The range model counts the tread among the bigger influences on how far you go.

The Mercer fit test

Every machine we review is measured against the same seven people, the Mercers, so one page's fit answers line up with the next page's. Here each U-750 verdict comes from Addmotor's published window, saddle heights, standover or payload, or from the fit tables that use them.

Member Age · Height Verdict The number behind it
Frank Kowalski 63 · 5'10" Inside; measure the inseam The formula wants 36.8 in from the saddle to the pedal; at his height, at least 28 of 100 riders need more than the top setting reaches
Ruth Kowalski 61 · 5'5" Inside The formula wants 33.8 in; the top setting sits 37.4 in off the ground, and no surveyed rider her height outgrows it
Jack Mercer 48 · 6'1" Outside the window Addmotor's window ends at 6'0"
Dana Mercer 45 · 5'7" Inside The formula wants 35.1 in; at her height, at least 2 of 100 riders need more than the top setting reaches
Maya Torres 32 · 5'6" Inside The formula wants 34.5 in; at her height, at least 1 of 100 needs more than the top setting reaches
Cole Mercer 16 · 5'11" Inside the window, measure the inseam, and set by his state The formula wants 37.4 in, at least 51 of 100 riders his height need more than the top setting, and his state's age rule decides whether a 16-year-old may ride
Ivy Mercer 12 · — Not as a passenger; as a rider, her state decides One saddle; her state's age rule decides whether a 12-year-old may operate an e-bike

Ruth, Dana and Maya sit comfortably inside the window; Frank and Cole are inside it too, and each should hold a barefoot inseam against the ceiling table before ordering. Jack, at 6'1", stands past Addmotor's 6'0", the rider the tall-rider flag is written for.

Has it been recalled?

No. On October 11, 2026, none of the 10,047 recalls on the Consumer Product Safety Commission's full recall list, June 8, 1973 to October 8, 2026, named Addmotor, the U-Trike, its U-750 code or its SKUs EB7574, EB7579, EB7577 and EB7572.

Every record was read in every field: for Addmotor, ADDMOTOR, Add Motor, Addmotor Tech, Motan and Addrider; for 19 Addmotor model families with the U-Trike among them; and for each model code Addmotor uses. The only match was "M300", in two laptop records: Sony's 2006 recall lists the Toshiba Portege M300 among the notebooks its batteries came in, and Compaq's 2001 recall the Armada M300 among the notebooks sold with its adapters.

Run the same way on the CPSC's recall list for three makers with recalls on file, the search found 1 record for Ancheer, 79 for Specialized and 40 for Trek. The agency keeps its own warnings on the product safety warning listing: none of its 375 entries names Addmotor or the U-750, and the same read turned up both warnings on file for a brand that carries two.

Class and road rules for a 750 W, 20 mph three-wheeler

A 750 W motor puts the U-750 on the federal watt line, so your state's own wording decides its class. Addmotor's page gives the trike a 750 W motor, a throttle and a 20 mph top speed; the federal definition sets its limits at 750 watts and 20 mph.

The federal text, 15 U.S.C. § 2085(b), names "a two- or three-wheeled vehicle with fully operable pedals and an electric motor of less than 750 watts (1 h.p.)", and caps its motor-only speed, a 170-pound rider aboard on paved level ground, at "less than 20 mph".

The federal definition asks for The U-750, in Addmotor's figures
Two or three wheels three
Fully operable pedals pedals, a chain and a Shimano 7-speed
A motor of less than 750 watts "750W Rear-Drive Motor, Peak 1400W"
Less than 20 mph on motor power, 170 lb rider "Up to 20 MPH"

The left column quotes § 2085(b) and the right quotes Addmotor's U-750 page, each read October 11, 2026.

The statute writes both lines as "less than", and the U-750's 750 W rating sits on the watt line. It measures the speed on motor power alone with a 170-pound rider aboard; Addmotor's tab gives "Up to 20 MPH" without a rider weight.

California's line includes the cap. Its Vehicle Code § 312.5(a), read September 28, 2026, allows an electric bicycle "an electric motor that does not exceed 750 watts of power", and § 231 gives a bicycle "one or more wheels" and adds "An electric bicycle is a bicycle."

Across the 50 states and DC, the U-750's figures sit inside 25 definitions. On October 11, 2026 each definition was screened for its watt wording, throttle rule, top speed and wheel count, plus Pennsylvania's weight limit:

Addmotor's figures fall… Jurisdictions
Inside the e-bike definition (25) CA, CO, DC, DE, GA, HI, IA, IN, MA, MD, MI, MN, NC, ND, NE, NM, NV, OK, OR, SC, SD, UT, VA, WA, WI
Outside it (23) AL, AR, AZ, FL, ID, IL, KS, LA, ME, MO, MS, MT, NH, NJ, NY, OH, PA, RI, TN, TX, VT, WV, WY
Open for a three-wheeler (1) CT
No e-bike definition (2) AK, KY

Screened October 11, 2026 from the definitions in our state law atlas. A state marked "open" has a definition whose words leave a three-wheeler unsettled.

Of the 23 outside, nineteen set the motor limit at "less than" or "fewer than" 750 watts, Alabama among them; Montana and Rhode Island name two wheels; New Jersey names two wheels and allows assistance only while you pedal; and Pennsylvania caps the weight, as the next paragraph sets out.

Pennsylvania turns on weight, and both of Addmotor's figures sit above its line. 75 Pa.C.S. § 102 covers "A vehicle weighing not more than 100 pounds with two or three wheels more than 11 inches in diameter"; Addmotor's tab says 167 lb and its April 2026 tables 110 lb, so Pennsylvania riders should email us for the state's other categories before ordering.

On October 1, 2026 Public Act 26-24 § 26 moved Connecticut's motor limit to "not more than seven hundred fifty watts", but § 14-1 still defines no "bicycle", so the wheel count stays open; write to us and we will confirm Connecticut's treatment of a three-wheeler.

North Carolina divides its definition into three classes on December 1, 2026, and the U-750's figures fall inside both before and after: Session Law 2026-46 still covers a bicycle "with two or three wheels" and "an electric motor of no more than 750" watts.

A trike outside a state's e-bike definition is still covered by that state's road code, as a moped or some other class with its own rules. For every state's answer see our 50-state e-bike law atlas, and for the most depth on one state, our California e-bike law page.

Before you ride anywhere, find your state's row above and open its page. The U-750 sits inside the e-bike definition in 25 jurisdictions; if your state is not among them, send us its name and the reply will quote its rule.

Trails, parks and public land

Off the street, the U-750 rides only where the land's manager allows it. A park path, a boardwalk or a campground road admits it only where that ground's own rule admits e-bikes.

Federal land divides two ways: the Bureau of Land Management writes its own e-bike definition, and the Forest Service decides e-bike access district by district. 43 CFR 8340.0-5 defines BLM's as "a two- or three-wheeled cycle with fully operable pedals and an electric motor of not more than 750 watts (1 h.p.)", which takes in the U-750's motor.

A field office may treat e-bikes as bicycles, but the off-road vehicle rules stay lifted only while, in the regulation's words, "the motor is not exclusively propelling the e-bike for an extended period of time".

On BLM ground, keep pedaling: long stretches on the throttle alone are what that condition rules out. From the moment the exception lapses, 43 CFR 8341.1 restricts an off-road vehicle to land designated "open to off-road vehicle use".

In National Forests the Forest Service directives of March 31, 2022 apply; the notice at 87 FR 41278 describes them as "managing all classes of e-bikes as motor vehicles", and where a Ranger District has a motor vehicle use map, 36 CFR 261.13 bars riding "other than in accordance with those designations".

Where you plan to ride Who decides What to read
A city or county park path the park agency its posted e-bike rule
A campground or RV park the campground's operator its posted rule
Private land the owner the owner's permission
A National Forest road or trail the Ranger District its motor vehicle use map (36 CFR 261.13)
BLM land the field office its e-bike decision and its open, limited and closed designations (43 CFR 8341.1)

The manager named in the right-hand column decides.

Breaking the off-road vehicle rules in subparts 8341 and 8343 carries the penalty in 43 CFR 8340.0-7: "a fine of not more than $1,000", imprisonment "for not longer than 12 months", or both. Each agency's rules are laid out in our public-land e-bike guide.

Tell us which park, campground or field office you have in mind, and our reply will quote its rule. Write to support@redtailebikes.com before you order. This button orders a Gulf Blue U-750; Blue checks out for the identical $2,599.

Get the Gulf Blue U-750

Green flags / Red flags

Green flags

Red flags

Each item below is about fit: the rider the U-750 does not suit, and where that rider goes next.

  • Wrong if it must fold into a car or a closet. The U-750's frame is rigid; the U-710 carries the same two modes, folds, and weighs 90 lb in Addmotor's comparison, at $2,399.
  • Wrong if you stand over 6'0" or your barefoot inseam runs past about 34.3 inches. The top saddle setting falls short of the 109% formula there; email us your inseam and we will set it against this trike and the rest of our trikes.
  • Wrong if you will not practice the lean. Tilting Mode wants an open area and, in Addmotor's words, "10–20 turns"; if you would rather never think about it, the Grandtan M-340 is a conventional fat-tire trike with no tilt to learn.
  • Wrong if you want the trike's two wheels up front. Our SpytanX review covers Addmotor's reverse trike, whose tilting front end carries two wheels.
  • Wrong if you weigh more than 340 lb. Addmotor's tab sets the rider at 340 lb; tell us your weight and load, and we will set them against the trikes we carry.
  • Wrong if you live in Pennsylvania and want it ridden as an e-bike. Both of Addmotor's weights sit above the state's 100 lb line; email us for Pennsylvania's other categories before you order.

Buy it if / Buy something else if

Buy it if you stand 5'1" to 6'0" with a barefoot inseam up to about 34.3 inches, want a trike that holds upright when you need it and leans when you want it, and want two baskets, a disc on each wheel, a parking brake and about 61 miles at 12 mph on the throttle on level ground for a 180 lb rider.

It asks for a rider at 340 lb or less with up to 100 lb in the basket, a state whose words take in a 750 W, 20 mph three-wheeler, room to store a rigid 72.8-inch trike, an open lot for the first laps in Tilting Mode, and an outlet indoors for a charge of about 10 hours from empty.

For $2,599 you get a 750 W rear-drive motor with a 1,400 W peak and a 960 Wh pack, a torque sensor, a pivot frame with a lock, an 80 mm fork, three fat tires, three discs, a parking brake and both baskets, at the price Addmotor's own page charged on October 11, 2026.

Buy something else if you need it to fold, where the U-710 runs $2,399; if you want no tilt at all, where the Grandtan M-340 is the conventional choice; or if you want two wheels in front, where the SpytanX is the reverse layout.

Our Addmotor brand profile sets the U-750 among the rest of Addmotor's trikes and bikes on our shelf, and our e-bike reviews hub collects every machine we have reviewed.

Before you buy: the checklist

Ten checks to run before the $2,599 goes on a card; the first three decide whether, and where, you may ride it.

  1. Find your state in the class table, then its page in our law atlas for the full rules.
  2. Ask each park, campground or trail you want to ride for its rule, since the land manager decides.
  3. Measure your barefoot inseam against the saddle and ceiling tables; past about 34.3 inches, read the tall-rider flag first.
  4. Weigh yourself and your cargo: 340 lb is the saddle's limit and 100 lb the baskets'.
  5. Measure where it will live: the trike is 72.8 inches long and 33.5 wide, and does not fold.
  6. Find your empty lot for the first laps in Tilting Mode, as Addmotor's FAQ asks.
  7. Look up your usual ride in the range tables, add its climbs, and leave 15% of the pack untouched.
  8. Check your steepest regular street in the climbing table, with your load.
  9. Pick a charging spot indoors at 50 to 77 °F, and allow about 10 hours from empty.
  10. Plan the build: Addmotor's FAQ says it "arrives 85% pre-assembled", with the tools and a video in the box.

Buying it from us

Why buy the U-750 from Redtail

Our listing priced the U-750 at $2,599 in Blue, Gulf Blue, Mint Green and Red on October 11, 2026. Addmotor's own page showed the same $2,599 that day, with $2,899 struck through, the price its June 18, 2026 launch post gave. After you order, we are the people you deal with.

What you get The detail
Price $2,599 in all four colors, read October 11, 2026
Paying Card at checkout, or the Shop Pay and Google Pay express buttons, read October 11, 2026
Shipping Free within the contiguous United States: dispatched within 1–3 business days, and most arrive 5–10 business days after that. Alaska, Hawaii, US territories, P.O. boxes and remote areas: email us first. New York City addresses: email us first as well, as our listing asks
If it arrives damaged Note it with the carrier and email us photos within 48 hours; we file the carrier claim and arrange a replacement or repair
If something fails Send photos and your order number. The claim comes to us, and we coordinate the repair or replacement
Answers first Send your height, inseam, load, route and state, and we will run the fit and range numbers and check the rules before you pay

Every color has its own checkout link.

Color Price Checkout
Blue $2,599 Buy the Blue U-750
Gulf Blue $2,599 Buy the Gulf Blue U-750
Mint Green $2,599 Buy the Mint Green U-750
Red $2,599 Buy the Red U-750

Each link goes straight to checkout at our October 11, 2026 price; Addmotor's page showed all four colors in stock that day.

The Addmotor U-Trike U-750 in Gulf Blue, side-on: a light blue frame and fenders, orange rims inside black tires, a brown saddle and backrest, and wire baskets front and rear

Gulf Blue, in Addmotor's studio image, with orange rims and black tires.

The Addmotor U-Trike U-750 in Mint Green, side-on: a pale green frame and fenders, orange rims inside black tires, a brown saddle and backrest, and wire baskets front and rear

Mint Green, in Addmotor's studio image; all four colors share this frame.

The build is the last 15%. Addmotor's product FAQ says the trike "arrives 85% pre-assembled", with the tools and "a step-by-step assembly video" for the front wheel, handlebars and pedals, and puts the job at "about 30–45 minutes"; email us if a step stalls and we will talk you through it.

If you change your mind, our refund policy applies: request it within 72 hours of delivery while the trike is still sealed in its factory packaging, and you receive the price less a 15% restocking fee and return shipping; canceling an order carries a 3% transaction fee. Send us your fit, load and route questions first, and the answers arrive before any of that applies.

The prices and terms in this section are our store's, as read October 11, 2026. Should a part fail, you talk to us and we handle Addmotor; Mint Green also costs $2,599.

Check out the Red, $2,599

Frequently asked questions

What is the Addmotor U-750 tilting electric trike?

A $2,599 fat-tire delta trike from Addmotor whose front frame pivots: locked, it rides as a rigid trike, and released, it leans up to 12° into turns while the rear wheels stay down. It pairs a 750 W rear motor with a 960 Wh pack, a torque sensor and two baskets (what it is).

How do tilting electric trikes improve cornering?

By letting the front frame and rider bank into the turn, as a bicycle does, while the rear axle stays flat. Addmotor's FAQ describes the U-750's pivot as letting the trike "lean into corners while keeping all three wheels planted on the ground" (the two modes).

How do I switch between Fixed Mode and Tilting Mode?

With the lever on the handlebar. Addmotor's FAQ says "Use the handlebar-mounted swing-lock lever": locked, "the frame locks upright", and released, the front frame tilts up to 12° (the two modes).

Is the U-750 hard to ride for beginners?

In Fixed Mode, Addmotor's FAQ says it rides "like a traditional tricycle" with "minimal practice". Tilting Mode "typically requires practice in an open area", and Addmotor puts the adjustment at "10–20 turns" for most riders, so start locked (the two modes).

How far can the Addmotor U-750 go on one charge?

Addmotor's Technical tab says "85 Miles (PAS1)". On the throttle over level pavement, the model gives a 180 lb rider about 61 miles at 12 mph and 37 at the 20 mph top, and about 42 at 12 mph with the full 440 lb aboard; each 1,000 feet climbed at 10 mph takes 198 to 241 Wh (the range tables).

What is the weight limit of the U-750?

340 lb for the rider and 100 lb of cargo, "340+100 LBS" on Addmotor's Technical tab, 440 lb in all; Addmotor's April 2026 posts printed 350 + 100 lb. At 440 lb on level pavement, the 12 mph throttle ride computes to about 42 miles (the weight table).

How much does the U-750 weigh?

167 lb with the battery, on the Technical tab and in Addmotor's posts of June 18 and August 26, 2026; two April 2026 specification tables printed 110 lb. The frame does not fold (the U-710 comparison).

Is the U-750 suitable for seniors?

Fit decides it more than age: the 17.3-inch step and the 5'1" to 6'0" window, set out in the fit section, and the choice of a locked frame. The Mercers' 61- and 63-year-olds both fall inside the window (the Mercer fit test).

How high does the U-750's saddle go, and will it fit my leg?

Addmotor's Size & Fit tab puts it 33.4 to 37.4 inches off the ground. A 5'8" rider with that height's median inseam, 32.6 inches, needs the saddle top 35.6 inches from the pedal by the 109% formula; a barefoot inseam past about 34.3 inches asks for more than the post reaches (the saddle tables).

How hard is the U-750 to assemble?

Addmotor's FAQ says it "arrives 85% pre-assembled", with the tools and an assembly video, and that most riders have it ready "in about 30–45 minutes". Email us as you build and we will answer each step.

Does the single rear-wheel drive affect the trike's balance?

Addmotor's answer in its product FAQ is no: the motor is "a rear-mounted single-sided motor", and "a transmission structure is added to the left side at the factory to effectively balance the weight" (what it is).

Your state's wording decides. On October 11, 2026, Addmotor's figures sat inside the e-bike definitions of 25 jurisdictions, California's "does not exceed 750 watts" among them (the class table). Email us your state and the answer will quote its own words.

Is the Addmotor U-Trike U-750 worth it?

If you fit the 5'1" to 6'0" window and want a trike that can lean, the case is $2,599, Addmotor's own price that day, for a 750 W torque-sensor trike that carries 340 + 100 lb and about 61 miles at 12 mph on the throttle on level ground for a 180 lb rider (the verdict).

Limitations of this review

Twenty points this review leaves open:

  1. We sell this trike. Start with the red flags, which weigh as much as the green ones.
  2. Specification-verified throughout: every figure traces to Addmotor's published documents, a statute, our store record, a study cited in the range or fit section, or arithmetic shown on this page.
  3. Every range row models one steady ride at one speed on one grade, in still air, without stopping. Pulling away from a stop, a headwind or a grass crossing each costs extra.
  4. A stand-in curve, a Bafang motor's published one, drives the model. Addmotor gives the motor's rating, peak and torque but not its speeds; were the motor 82% efficient, 2 points above Bafang's 80% floor, the 12 mph throttle ride would reach 66 miles instead of the table's 61.
  5. The model's weakest ground is where your pedaling supplies the bulk of the power. In the easy-pedaling columns at 12 mph and below, the answer hangs on the motor's light-load losses, which fall between the rated and no-load points Bafang's workbook publishes.
  6. The model caps the motor at its rated 750 W. The 1,400 W peak is not used, so on a short, steep pitch the trike may climb faster than the climbing table's steady paces.
  7. The model takes the motor's unloaded speed from Addmotor's 20 mph, tuned so a 180 lb rider on the throttle just gets there. A real motor that spins faster and is held back by a limiter would draw a little differently near 20 mph.
  8. No owner's ride to an empty pack is on record for the U-750: the YouTube videos of the trike read on October 11, 2026, Addmotor's own among them, give no distance ridden with a rider weight or a speed, nor does the owner review posted on Reddit on August 3, 2026, which praises its range without a figure; and its question board's three questions do not ask about range. The tables rest on the two published checks in the formula section.
  9. The tables treat all 960 Wh as usable. Addmotor's documents do not say how much of the pack the battery management lets you draw; when researchers at KIT ran one pedelec through a standard bench range test, 75% was in use.
  10. The rolling-resistance figure is a drum median of ten fat-bike tires, not a measurement of the U-750's own 20 × 4.0, whose casing Addmotor does not name; the tire table shows how far the answer moves.
  11. One laboratory cell anchors the cold table. With the pack's cell model unnamed, the middle line uses McMaster University's measurements of an LG HG2, and the brackets come from Samsung's and other published data.
  12. Nothing is measured on the size drawing. Its arrows work out to anywhere from 14.9 to 17.0 pixels per inch, and no single scale brought more than two of the others within 3.5%, so the saddle table ends at the formula's distance and your tape measure takes over.
  13. The ceiling table is a floor. It leaves out the pedal's height off the ground, and counting that height could only add riders whom the top setting leaves short of the formula.
  14. Lean and hand load are not computed. No seat angle, bracket height or grip position is published, so those two subsections offer guidance, and the hand-load figure they quote was measured on road racers on the hoods, a stretched position unlike the upright one the U-750's tall bar sets.
  15. Treat each saddle distance as a starting point. It is the 109% rule on the median inseam for your height, and the heel check on the trike takes you the remaining way toward a 25 to 35 degree knee range.
  16. A military survey underlies the fit tables. ANSUR II measured 6,068 people aged 17 to 58 between 2010 and 2012, not a sample of the US public, so let your own inseam pick your row.
  17. Addmotor's documents give the U-750 two weights, two payload splits and two standover heights: 167 and 110 lb; 340 + 100 and 350 + 100 lb; 17.3 and 13.7 inches. All are printed; the model uses the tab's 167 lb and 340 + 100 lb, and the standover table clears both heights.
  18. The battery's UL 2271 line is Addmotor's stat strip, with no certificate number on the tabs; we will ask Addmotor for the pack's own document on request.
  19. The class table reads each state's definition as recorded in our law atlas, screened October 11, 2026. Definitions change (Connecticut's on October 1, North Carolina's on December 1), and three-wheeler wording outside a definition section was not read for every state.
  20. Prices, stock and checkout options are as read on October 11, 2026, while Addmotor's site was running its Prime Month sale; when Addmotor moves the U-750's price, ours moves with it.

The bottom line

At $2,599, the U-Trike U-750 puts a 750 W rear-drive motor and a 960 Wh pack on a fat-tire trike whose front frame locks upright or leans 12°, with a torque sensor, an 80 mm fork, a disc on each wheel, a parking brake and both baskets in the box.

The model puts a 180 lb rider on level pavement at about 61 miles at 12 mph on the throttle, and the full 440 lb at about 42; up 8%, the motor holds a 180 lb rider near 11.3 mph.

Its owner stands 5'1" to 6'0" with a barefoot inseam up to about 34.3 inches, weighs 340 lb or less, rides where the state's words take in a 750 W three-wheeler, and has room for a trike that does not fold. A full charge costs about 18 cents at the July 2026 US average power price.

Get two answers from us before checkout: whether the top saddle setting reaches your inseam, and how your state classes the trike. Send us your height, inseam, weight and state, and one reply will answer both.

This button is the Red U-750, $2,599; Blue, Gulf Blue and Mint Green sell for that figure too. Shipping inside the contiguous United States is on us, and if a carrier damages the box, we handle the claim.

Your U-750, $2,599

Image credit: every image below the cover is Addmotor's own, its size drawing and close-ups included, cropped and resized and never retouched.

The trike on the cover is Addmotor's own studio image, resized at one uniform scale with its pixels untouched; Playcut (playcut.ai) generated the studio around it with Nano Banana Pro, and the type and its shading sit on top.

Source register

What each document behind this review supports.

T1 is the record itself, read from whoever issued it: a statute, a federal regulation or notice, the maker's own product page, drawing, images, video, question board and posts, a federal agency's list or table, and our own store record.

T2 is a party's own publication about its product, its measurements or its own riding: the motor maker's workbook, research groups' and laboratories' published measurements, and an owner's own review, quoted as his.

Source Tier What it supports
Addmotor, U-Trike U-750 product page, its specification tabs as clicked, stat strip, buy box, product FAQ and owner reviews T1 (manufacturer, primary) Every specification row, the window and dimensions, the two modes, the range figure, top speed, payload, the box contents, the colors and stock, the price and its struck figure
Addmotor's U-750 size drawing, its close-ups and studio images, its video of June 11, 2026 and its Short of August 1, 2026 T1 (manufacturer, primary) The printed dimensions and the drawing's controls; the lever, brakes, lights, fork and saddle; the four views of the lean; the two modes in motion, and no recorded ride in either (Limitations item 8)
Addmotor's U-750 question board T1 (manufacturer, primary) Addmotor's dated answers on the torque sensor, the three tires and the backrest
An owner's review on Reddit, August 3, 2026 T2 (an owner's own account, quoted as his) How he rides the two modes, his advice on the lever, and a range praised without a figure (Limitations item 8)
Addmotor's posts: April 25, 27 and 28, 2026 (specification tables); June 18, 2026 (launch); June 29, 2026 (dual-mode); August 26, 2026 (the UTrike series and the U-710); October 8, 2026 (Prime Month); battery health, battery maintenance, new riders T1 (manufacturer, primary) The 110 lb weight and 350 + 100 lb split, the launch price and 167 lb, the U-710 comparison, the 90 N·m torque, the taillight's modes, pack care and first-ride advice
Addmotor, U-Trike U-710 product page T1 (manufacturer, primary) The U-710's price, read October 11, 2026
15 U.S.C. § 2085 · Cal. Veh. Code § 312.5 · Cal. Veh. Code § 231 · 75 Pa.C.S. § 102 · Conn. Public Act 26-24 · N.C. Session Law 2026-46 T1 (legislature, GPO) The definitions and their lines, quoted; Pennsylvania's weight limit; Connecticut's October 1 and North Carolina's December 1, 2026 changes
Our 50-state e-bike law atlas and the state definitions it records T1 (statutes, as read into our atlas) Each state's watt wording, throttle rule, speed, wheel count and Pennsylvania's weight limit, screened for the U-750
43 CFR 8340.0-5 · 43 CFR 8341.1 · 43 CFR 8340.0-7 · 36 CFR 261.13 · 87 FR 41278 T1 (federal regulation and notice) BLM and Forest Service rules for e-bikes and motorized vehicles, and the penalty
CPSC recall data · CPSC warning listing · the Sony 2006 and Compaq 2001 recall pages T1 (federal agency) The recall and warning reads and their controls; the two laptop records the "M300" code matched
EIA Electric Power Monthly, Table 5.6.A T1 (federal agency) The US average residential price of electricity, July 2026, behind the charging cost
Redtail eBikes shipping policy, refund policy, our U-750 listing, our U-710 listing and our checkout T1 (first party) Price, colors, checkout options, shipping scope and times, the New York City note, the damage window, claim handling, change-of-mind terms, the U-710's price
Bafang workbook 2021 T2 (motor maker, primary) The comparable motor's speeds, rating and efficiency floor
Martin et al., 1998 T2 (own validation) The cycling-power model, its worked example and chain efficiency
Bicycle Rolling Resistance, fat-bike tests · Bicycle Rolling Resistance, temperature test · Rothhämel, 2023 · Tengattini and Bigazzi, 2018 T2 (own published measurements) Rolling resistance of ten fat-bike tires on a drum; the change in rolling resistance with temperature; drag areas from riders on the road
Arango, Lopez and Ceren, 2021 · Schmitt, Decker and Doppelbauer, 2019 T2 (own measurements) Battery efficiency; usable pack energy on a measured pedelec
McMaster HG2 data; Samsung sheets (25R, 30Q, 35E); Casado et al., 2025 · U.S. Standard Atmosphere, 1976 T2 / T1 Cell energy by temperature and its brackets; air density
Sheldon Brown, tire sizing T2 (reference table) The 406 mm bead seat of a 20-inch decimal tire
US Army ANSUR II, 2012 T1 (federal agency data) The 6,068 bodies behind every fit figure
Peveler et al., 2005 · Peveler, Pounders and Bishop, 2007 · Ferrer-Roca et al., 2012 T2 (peer-reviewed measurements) The saddle formula, its published range, the knee target and the heel method
Carahalios, 2015 · Slane et al., 2011 T2 (own published measurements) The measured load on the bars, and hand pressure with and without padded gloves

Expiry conditions

Re-read this page if Addmotor changes the U-750's price, motor, pack, range figure, top speed, weight, payload, saddle heights, standover, size drawing, colors, stock, product FAQ or question-board answers; if Addmotor's Prime Month pricing ends and its price moves; or if the colors, price or checkout options change on our store.

Re-read it too if a state changes its e-bike definition, once North Carolina's December 1, 2026 change is read into our atlas, or if a recall is published naming Addmotor, the U-Trike, the U-750 or any of its four SKUs. Verified October 11, 2026.

References

The full bibliographic record for each document cited above, with the date it was retrieved.

  1. Addmotor Tech, U-Trike U-750 Tilting eTrike — product page (Size & Fit, Technical, Performance and Delivery tabs as each shows when clicked, stat strip, buy box with stock by color, product FAQ and owner reviews, as served for the United States). Retrieved October 11, 2026. https://www.addmotor.com/products/u-trike-u750
  2. Addmotor Tech, U-Trike U-750 size drawing (u750-size), on the product page. Retrieved October 11, 2026. https://www.addmotor.com/u_file/2607/photo/u750-size_1785408589.png
  3. Addmotor Tech, U-Trike U-750 question board, Addmotor's dated answers cited here: q2815 (June 1, 2026), q2841 (June 26, 2026), q2842 (June 26, 2026). Retrieved October 11, 2026. https://www.addmotor.com/question_p512/
  4. Addmotor, Not Your Typical Trike: U750 Tilting in Motion (YouTube, June 11, 2026), the caption track read for the two modes; the video in the U-750 product page's own player. Retrieved October 11, 2026. https://www.youtube.com/watch?v=bTvNdtTbTiA
  5. Addmotor, Addmotor U750 Tilting Trike #electrictricycle #etrike #ebike (YouTube Short, August 1, 2026), the caption track read for a recorded ride (none). Retrieved October 11, 2026. https://www.youtube.com/watch?v=-XXsjV4p5bI
  6. Reddit, r/ebikes, "Addmotor U-trike U-750, tilting trike review" (an owner's review, posted August 3, 2026; no replies on October 11, 2026). Retrieved October 11, 2026 through the Arctic Shift archive. https://www.reddit.com/r/ebikes/comments/1vekz71/addmotor_utrike_u750_tilting_trike_review/
  7. Addmotor Tech, U-Trike U-750 Tilting eTrike: The Stability of Three Wheels, the Soul of Two (blog, April 25, 2026). Retrieved October 11, 2026. https://www.addmotor.com/blog/u-trike-u-750-tilting-etrike-stability-and-freedom
  8. Addmotor Tech, U‑Trike U‑750 Tilting eTrike — Mastering the Lean with Two‑Wheel Freedom & Three‑Wheel Safety (blog, April 27, 2026). Retrieved October 11, 2026. https://www.addmotor.com/blog/u-trike-u-750-tilting-etrike-mastering-the-lean-two-wheel-freedom-three-wheel-safety
  9. Addmotor Tech, U‑Trike U‑750 Tilting eTrike: A New Benchmark in Inclusive, Agile Adventure (blog, April 28, 2026). Retrieved October 11, 2026. https://www.addmotor.com/blog/u-trike-u-750-tilting-etrike-inclusive-agile-adventure
  10. Addmotor Tech, Addmotor Launches U-Trike U-750: Bringing Premium Tilting Technology to a Proven Classic (blog, June 18, 2026). Retrieved October 11, 2026. https://www.addmotor.com/blog/addmotor-u-trike-u-750-tilting-technology
  11. Addmotor Tech, New Addmotor U-Trike U-750: A Dual-Mode Tilting Trike for Stability and Freedom (blog, June 29, 2026). Retrieved October 11, 2026. https://www.addmotor.com/blog/addmotor-u-trike-u-750-dual-mode-tilting-trike
  12. Addmotor Tech, Addmotor UTrike Series: Dual-Mode Tilting Electric Trikes for Every Rider (blog, August 26, 2026). Retrieved October 11, 2026. https://www.addmotor.com/blog/utrike-series-tilting-electric-trikes-for-adults
  13. Addmotor Tech, Addmotor 2026 Prime Month Electric Trike Unbeatable Deals — Up to $1,600 OFF! (blog, October 8, 2026). Retrieved October 11, 2026. https://www.addmotor.com/blog/addmotor-2026-prime-month-etrike-deals
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