Himiway D5 Pro Review: 130 N·m Mid-Drive, 960 Wh

Mid-drive fat-tire e-bike, step-over frame · a 500 W torque-sensing mid-motor, 130 N·m, 1,300 W peak · a 48 V 20 Ah pack, 960 Wh · Shimano Altus 9-speed, 44T by 11–36T · 26 × 4.0 Kenda tires on a 100 mm fork · 79 lb, 400 lb payload · up to 20 mph on the throttle · $1,999 here, Himiway's VIP price against its $2,599 list · verified October 29, 2026

Quick Answer — The Himiway D5 Pro is a $1,999 fat-tire e-bike that drives its 26-inch wheels through a 500 W torque-sensing mid-motor and nine Shimano gears, on a 960 Wh pack. Himiway lists 60 to 80 miles; for a 180 lb rider on the throttle at 15 mph over flat pavement, the computed figure is about 54.

Check your inseam before the color: the step-over's top tube stands 31.1 inches off the ground on Himiway's geometry drawing, so if you are under about 5'7", read the fit section first: at 5'6", 72 of 100 riders have the inseam for it. Then set your load against the 400 lb payload (range by weight) and your state's rule against a throttle bike that stops at 20 mph (class).

What this review covers

Specification · What it is · Fit · Motor and gears · Battery · Range · Carrying · Brakes and lights · Fork and tires · The Mercer fit test · UL · Recalls · D5 family · Class · Green and red flags · Verdict · Checklist · Buying it from us · FAQ · Limitations · Bottom line · References

How we verified this Himiway D5 Pro review

Every specification here is Himiway's own, read on October 29, 2026, from the D5 Pro page, its VIP sale page and the D5 Pro manual that Himiway's help center links, and checked against the same page as read on October 23; the cassette's cog steps are Shimano's. Price, stock and checkout come from our store the same evening.

Range and fit are computed from those figures with published physics and body data, and each model prints its inputs under its own tables. Because we sell the D5 Pro, we put its red flags on the page next to the green ones. Part of our e-bike reviews.

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

The D5 Pro's specification, as Himiway prints it

One frame, one motor and one pack: the D5 Pro we sell is the step-over, and every figure below is Himiway's, from its D5 Pro page unless a row names the manual. Where the two documents print different figures, the row carries both.

Himiway's own photograph of the D5 Pro in Space Grey, from the D5 Pro page, used whole.

Read from the D5 Pro page and the manual's specification pages (printed pages 4 and 5), October 29, 2026.

Where the two documents disagree, this review leads with the page and prints the manual's figure beside it, because the manual itself tells owners to "Visit himiwaybike.com to download the latest version". The range model below runs the page's 44T chainring and 11–36T cassette, whose nine cogs Shimano lists as 11-13-15-17-20-23-26-30-36, with the manual's 46T as a check.

Himiway's mid-drive D5: what the D5 Pro is

The D5 Pro is a mid-drive fat bike: the D5 with its motor moved from the rear wheel to the cranks. Himiway's own listing says the D5 Pro was "formerly the Zebra Pro", and its Class 2 collection lists it beside the hub-drive D5 2.0 and D5 (Zebra).

A mid-drive turns the chainring, so the motor's power reaches the wheel through the same nine gears your legs use. Shift down on a climb and the motor turns faster at less torque, where it wastes less of its energy as heat, as a measured mid-drive efficiency map shows (how a mid-drive works); the range section puts numbers on that for every gear.

The front fork carries 100 mm of travel and the rear has none, which makes this a hardtail. Himiway pairs that with 26 × 4.0 tires, a rear rack and fenders in the box, and a payload of 400 lb, by its D5 Pro page.

Himiway's own photograph of the D5 Pro in water and sand, from the D5 Pro page, used whole.

Does the D5 Pro fit your body? Inseam first

At Himiway's own 5'3" minimum, 13 of 100 riders in the US Army's body survey have the inseam to stand over the step-over's 31.1-inch top tube; from 5'8" up, 96 or more do.

The saddle is the easier part: from 5'3" to 5'8", the seatpost's top setting surely reaches the height the 109%-of-inseam formula sets for 99 or 100 of every 100 riders in that survey, and its lowest setting is too high for none of them.

Height alone cannot size this frame, because in the ANSUR II survey of 4,082 men and 1,986 women the inseam spread at one height is wide enough to decide the standover answer. Three steps:

1. Measure your inseam standing in bare feet, with a book pulled up snug against your crotch; the inseam is the height of the book's top edge above the floor.
2. Find your height row in the tables below, then compare your own inseam with the 31.1 inches the top tube asks for.
3. Set the saddle when the bike arrives, using the heel check in the setup section.

Will the saddle go high enough for a tall rider?

For riders up to 5'8", almost always: the top setting surely reaches the saddle height the formula sets for 99 or 100 of 100 riders at each of those heights. Above 6 feet the answer depends on your inseam, and the second table shows where it stops being certain.

The formula is the starting point cycling research uses: the saddle top sits 109% of your inseam from the pedal axle when the crank points straight down, Hamley and Thomas's figure as compared by Peveler et al. (2005). The table's 106% and 110.4% columns span the two ranges in Ferrer-Roca et al. (2012): 106 to 109%, the range they cite as recommended, and 108.6 to 110.4%, the one they propose.

On the D5 Pro's 170 mm cranks, that becomes the distance from the crank axle to the saddle top below.

Crank axle to saddle top along the seat-tube line, for the middle rider of each height in ANSUR II; the typical inseam is the 5th to 95th percentile at that height. 170 mm cranks, from Himiway's specification block.

Himiway prints the seat as "F – minimum seat height 20.9" and "G – maximum seat height 31.4" on its geometry drawing, heights above the crank axle on its own drawing, while the manual (printed page 4) prints the same 20.9-inch minimum with "9.5 Inch" of adjustment, a top of 30.4.

Both are vertical heights on Himiway's drawing and the formula runs along the seat tube, so the table below counts only the certain cases: riders the lowest setting surely sits too high for, and riders the top setting surely reaches.

Himiway's page figures, 20.9 to 31.4 inches above the crank axle (about 32.7 to 43.2 inches off the ground over the 11.8-inch bracket height measured on Himiway's drawing). A rider counted in neither column may still fit; a vertical figure cannot settle it either way.

The manual's figures, 20.9 inches plus 9.5 of adjustment, a top of 30.4 inches above the crank axle.

From Himiway's 5'3" minimum up, no rider in the survey finds the lowest setting surely too high. From 6'1" up, fewer than half are certain to be reached on either figure, although Himiway's rider window runs to 6'5".

The window and the model can both be right, because a rider counted in neither column of the table is simply not settled by a vertical figure. If you are over 6 feet, compare your own inseam with the rows above before you order.

Can you stand over the 31.1-inch top tube?

The step-over's top tube is the D5 Pro's sizing limit for shorter riders: by Himiway's figure it stands 31.1 inches off the ground, and you need that much inseam to straddle it flat-footed. At 5'6", 72 of 100 riders in the survey have it.

Riders of 100 at each height in ANSUR II whose barefoot inseam is at least the 31.1-inch standover Himiway prints for the step-over ("N – standover height ST 22.4/ SO 31.1"); the typical inseam is the middle rider's.

Himiway's step-thru, the D5 Pro ST, has a 22.4-inch standover by the same drawing, but every variant of our D5 Pro ST listing was sold out on October 29, 2026. Under about 5'6", read our D5 2.0 review, whose 26-inch step-thru frame stands 19.3 inches.

How far do you reach to the bars?

How far you lean to reach the grips is not computed here, because that needs a grip position and a seat-tube angle that Himiway does not print and its drawing does not show. The drawing's handlebar is seen end-on, so no grip point can be read from it.

What Himiway does print sets the cockpit's frame: a handlebar 47 inches off the ground, a frame stack of 24.6 inches and a reach of 17.8 inches, a 700 mm Promax bar on a 90 mm stem, all on the D5 Pro page.

Weight on your wrists

How much of your weight rests on the bars turns on that same grip position, which is not published, so the D5 Pro gets no hand-load figure. As a scale reference only, Carahalios (2015) puts about 15% of body weight through the stem for ten road racers crouched on the hoods; on the D5 Pro the 47-inch bar sits above even the top saddle setting, about 43.2 inches off the ground.

How do you set the saddle when it arrives?

With the crank pointing straight down and your heel on that pedal, raise the saddle until the leg is just straight while you sit on it; to ride, move your foot so its ball sits over the pedal axle. That heel check put 70% of riders in the 25 to 35 degree knee range in Peveler et al. (2005), against 55 to 65% for the formulas.

Peveler et al. (2007) is the source of the knee target: 25 to 35 degrees of bend, measured at the stroke's lowest point. Himiway's manual adds its own limit for the post (printed page 10): "Do not extend the seatpost beyond the minimum insertion marking etched onto the seatpost."

The fit arithmetic, step by step

Measured from the crank axle instead, the formula's distance is 109% of inseam minus the 170 mm crank, close to what LeMond's 88.3% of inseam gives from there. The model applies it to every body in the survey and counts the riders at each height. Here it is for one rider.

A 5'8" rider with the survey's middle inseam at that height, 32.6 inches, needs 35.6 inches from the pedal to the saddle top. Take off the 6.7-inch crank and that is 28.9 inches from the crank axle; LeMond's 88.3% gives 28.8, and the 106% to 110.4% band runs from 27.9 to 29.3.

The bracket height is the only measured input, and it changes no verdict above: both bound columns use Himiway's own heights above the crank axle. It was read on the manual's drawing (printed page 4), scaled by the published 49.2-inch wheelbase between the two hub centers.

Three dimensions the manual prints served as checks and came back within 3.5%: the 28.7-inch wheel diameter at -0.2%, the 78.7-inch total length, read from the rack tip to the front tire, at -0.2%, and the 19-inch chain stay at -0.5%.

On the same scale, the lower saddle in the drawing sits 21.5 inches above the crank axle, 3.0% over the manual's printed 20.9, which is how the seat figures are read as vertical heights.

Three readings missed and are printed here: the handlebar top came out at 44.8 inches against the published 47 (-4.8%), the frame stack read on the drawn bike at 25.6 inches against 24.6 (+4.2%), and the drawing's raised second saddle at 33.3 inches against 31.4 (+5.9%), so none is used.

For LeMond's method, Peveler et al. (2005) report 109.2% ± 0.9%; on this bike, LeMond's 88.3% plus the 6.7-inch crank comes to 109.0% of the median inseam, inside that spread. ANSUR II measured US Army personnel aged 17 to 58 from 2010 to 2012, whose proportions may differ from the wider public's.

Motor and gears: how a mid-drive works

The D5 Pro's motor drives the chainring from the bottom bracket, so its 130 N·m reaches the rear wheel through whichever of the nine Shimano cogs you have shifted to. Himiway rates it at 500 W with a 1,300 W peak and lists four sensors: torque, shifting, speed and brake.

Himiway names no motor maker in any D5 Pro document we read, so this review calls it what Himiway does, a "500W Torque-Sensing Mid-Motor", in the words of its listing.

Himiway's own image of the D5 Pro's mid-drive motor, from the D5 Pro page, used whole; the motor turns the chainring where the cranks meet the frame.

How does an e-bike torque sensor work?

The torque sensor measures the force you put into the pedals, and the controller sizes the motor's help to match. In Texas Instruments' engineering brief on e-bike sensing, monitoring torque "applied to the crank shaft in the bottom bracket or at the rear chain sprocket allows the e-bike to receive instantaneous feedback from the rider", and "Control algorithms can set a variable motor drive with respect to the human energy output."

The same brief describes bottom-bracket sensors as "commonly implemented using a strain gauge mounted on the axle of the pedal crank"; Himiway does not say which kind the D5 Pro uses. Its manual sets five pedal-assist levels, 1 to 5 (printed page 17), and warns that "Acceleration can be unexpectedly strong in pedal assist mode", recommending its pedal-only level 0 at intersections and slow speeds (printed page 12).

Himiway's own cutaway image of the motor, from the D5 Pro page, used whole.

Mid-drive or hub motor?

A hub motor turns the wheel at the wheel's own speed, whatever gear you are in; a mid-drive like the D5 Pro's turns the chainring, so shifting changes the motor's speed as well as yours. That matters on climbs, where an electric motor loses more of its energy as heat at low speed and high torque.

The measured map of a 48 V mid-drive in Arango, Lopez and Ceren (2021) shows it: about 78 to 80% efficient at 90 to 115 rpm and 20 to 55 N·m, against 50 to 60% at 25 rpm or below. On an 8% climb at 8 mph, the range model puts the D5 Pro's motor at 23 rpm in the 11T cog and 77 rpm in the 36T.

Himiway's D5 2.0 is the hub-drive fat bike of the same D5 line: a 750 W rear geared hub, full suspension and three frames, all in our D5 2.0 review.

The nine gears, and when to shift

The page lists a Shimano Altus M2000 9-speed with a CS-HG201-9 cassette, 11 to 36 teeth, behind a 44-tooth chainring. In the hardest gear one turn of the cranks turns the rear wheel 4.0 times, and in the easiest 1.22 times; Shimano's own listing gives the cogs in between as 13, 15, 17, 20, 23, 26 and 30.

Himiway's D5 Pro page says the gearing "can help extend the range of a single battery charge by up to 15% when used effectively", and the manual's own advice is to "downshift before stopping the bike" and to ease off the pedals while shifting (printed page 18). The gear tables show where the difference grows past 15%: on climbs.

Himiway's own photograph of the D5 Pro's thumb throttle and button pad, from the D5 Pro page, used whole.

One pack, 48 V and 20 Ah: battery and charging

The D5 Pro carries a Samsung/LG 48 V, 20 Ah pack, 960 Wh, which charges on or off the bike from a 3.0 A charger. Himiway's D5 Pro page and manual print no charging time; by the arithmetic of 20 Ah at 3.0 A, an empty pack needs at least 6.7 hours of charger current.

Charge between 32 °F and 104 °F. The manual gives two floors: its safety notice says the pack "is intended to be charged when the ambient temperature is between 0°C (32°F) and 40 °C (104°F)" (printed page 2), and its battery precautions say not to charge it "under 14° Fahrenheit (-10° Celsius)" (printed page 16); the warmer range satisfies both.

Himiway gives two pieces of advice on how far to run the pack down, and both are printed here. The manual says "Do not fully drain your battery" and "Fully charge the battery after each use" (printed page 16); a 2026 Himiway post on charging asks riders to "avoid letting the charge drop below 20%". The range tables plan with that 20% kept.

A full charge of the 960 Wh pack uses about 17 cents of electricity, plus the charger's own losses, priced at the 18.16 cents per kWh that the Energy Information Administration's monthly table gives as the US residential average for August 2026. For a 180 lb rider, a year of 1,000 flat miles on the throttle at 15 mph, which the model puts at 17.6 Wh a mile, comes to about $3.20.

The manual rates the bike "IPX4 Water Resistance" and asks owners not to park it "outdoors in cold or inclement weather for extended periods" (printed page 18).

Range: how far a 48 V 20 Ah pack goes

A 180 lb rider on the throttle alone, holding 15 mph over flat pavement, gets about 54 miles from the D5 Pro's full 960 Wh at 77 °F, or 44 with Himiway's advised 20% kept in the pack. With easy pedaling at 75 W the same ride stretches to 85 miles, and 20 mph on the throttle cuts it to 39.

These are computed from Himiway's own figures with published physics, and the arithmetic section lists the inputs and their sources. Find your ride in three steps:

1. Find your row in the first two tables: throttle only, easy pedaling or steady pedaling, at the speed you hold.
2. Adjust for your ride with the tables for hills, weight, cold and tires.
3. Plan with the reserve: use the "With 20% kept" column, the share of the pack Himiway's 20-80 post advises leaving in it.

How far does a 48 V 20 Ah pack go at your speed?

On the throttle, every extra mile per hour costs range: going from 15 to 20 mph cuts the D5 Pro's flat-ground miles by 28%. Pedaling pays back fast, because a mid-drive adds your watts to its own at the cranks.

Throttle only, flat pavement, 180 lb rider plus load on the 79 lb bike, 77 °F, no wind, the cheapest of the nine gears at each speed, from the full 960 Wh; the last column keeps the 20% Himiway's post advises.

Miles from the full 960 Wh, same conditions. "Legs alone" means your pedaling holds that speed with no help from the motor: 75 W of your own carries the bike and a 180 lb rider at 9.1 mph, 150 W at 13.3 mph. A ride above 100 miles is printed as 100+.

Easy pedaling at 75 W adds about 30 miles at 15 mph, because in the road-cycling power equation every watt your legs supply is a watt the pack does not.

Miles by gear

On the flat the gear you pick changes the D5 Pro's battery use by 10 to 16%, and on a climb by far more: up an 8% grade at 8 mph, the 36T cog uses 45% less energy per mile than the 15T. Downshift for hills and the motor spins faster at less torque, where it wastes less.

Throttle only, 180 lb rider, flat, 77 °F. A cog is left out where the motor would pass the 130 rpm no-load speed of the comparable motor the model uses, which is why only five of the nine cogs carry 20 mph. Chainring rpm is the motor's own speed at the cranks.

8% and 6% grades at 8 mph, 180 lb rider, 77 °F; miles from the full 960 Wh if the whole ride were that climb. "Out of torque" means the motor cannot supply the climb at that crank speed: in the 11T it would turn at 23 rpm, too slowly to reach the torque the grade needs.

Himiway says its 9-speed gearing "can help extend the range of a single battery charge by up to 15% when used effectively", on the D5 Pro page. The model's flat-ground figures sit close to that: the spread between the cheapest and the dearest usable gear runs from 10% at 10 mph to 16% at 20 mph, and the gap is much larger on climbs.

Are mid-drive e-bikes better for hills?

The D5 Pro's motor holds 14.8 mph up a 4% grade on the throttle and 8.3 mph up 10%, in the right gear, for a 180 lb rider. Himiway's manual sets 15% as the limit: "Do not attempt to ride up hills steeper than 15% grade" (printed page 18), and the model stops there.

The fastest steady speed the motor's rated 500 W holds, in the best gear, 180 lb rider, 77 °F, and the energy per mile at 8 mph with easy pedaling; miles from the full 960 Wh if the whole ride were that grade.

A mid-drive's advantage on a climb is the gearbox: the 36T lets the motor turn fast enough to stay efficient, as the measured mid-drive map behind the model shows. The manual adds its own climbing advice for the D5 Pro: "Use the pedals to assist the motor when climbing hills and accelerating from a stop" (printed page 18).

Each 1,000 feet of climbing at 8 mph costs the D5 Pro 129 to 142 Wh on the throttle, depending on the grade. Lifting a 180 lb rider and the bike that far takes 98 Wh at the wheel, the climbing term of Martin et al.'s equation; the rest is the motor's and the gears' losses.

At the 8% grade's 137 Wh per 1,000 feet, the full pack climbs about 7,000 feet on the throttle alone.

Are fat-tire bikes better for heavy riders?

The D5 Pro carries up to 400 lb of rider and load by Himiway's payload figure, and at that weight the 15 mph throttle ride still computes to 41 miles, against 54 at 180 lb. Weight costs most on climbs, where it adds directly to the work.

You plus everything you carry on the bike, flat pavement unless the column says otherwise, 77 °F, best gear, from the full 960 Wh. "Over 500 W" means that climb at that speed asks more than the motor's rated output with easy pedaling; slow down or pedal harder.

Himiway prints "Max. payload capacity 400 lb." on the D5 Pro page, with no word on whether the bike's own 79 lb is inside it, so the table reads it as rider and load. If you and your load come close to the 400 lb limit, the heaviest-payload row of our fat-tire guide sets out the fat bikes we sell that are rated to carry the most.

Miles in the cold

Cold trims the D5 Pro's 15 mph easy-pedaling ride from 85 miles at 77 °F to about 64 at 32 °F, because a chilled pack releases less of its stored energy and colder, denser air adds drag. At 14 °F it is about 57, with a wide spread between cell types.

180 lb rider, flat pavement, best gear, from the full 960 Wh at each air temperature, the pack at air temperature. Cell energy is the LG HG2's measured share at that temperature against 77 °F; the brackets are the spread across the cell data the model reads, since Himiway names no cell model.

Below freezing, do the charging indoors: the safety notice in Himiway's manual (printed page 2) puts the charging range "between 0°C (32°F) and 40 °C (104°F)".

Which fat tire rolls farthest?

Tread is an unknown in the D5 Pro's range, because Himiway prints "Kenda 26*4.0" and no tread name, so the model brackets it with four measured rolling-resistance figures. At 15 mph with easy pedaling, the bracket runs from 75 to 108 miles.

Rolling resistance at 77 °F from the drum measurements of BicycleRollingResistance's fat-bike table (ten 26 × 4.00 tires at 12 psi), with the field average for knobby tires from Tengattini and Bigazzi (2018); 180 lb rider, flat, full 960 Wh.

The model uses the median of the ten measured fat tires. Kenda's own Juggernaut Pro, the heaviest-rolling of them, would bring the 15 mph easy-pedaling ride from 85 miles down to 75 for a 180 lb rider on flat pavement.

Himiway's 60 to 80 miles, mapped to a ride

Himiway's "60-80 miles" fits a flat ride with some pedaling: for a 180 lb rider, 80 miles asks for 12.0 Wh a mile, which the model reaches with easy pedaling at 15.5 mph or on the throttle at 8.4 mph. Sixty miles, 16.0 Wh a mile, fits the throttle at 13.5 mph or easy pedaling at 17.9 mph.

Himiway's page and listing state no rider, speed or assist level for the range, and its manual's range reference table (printed page 3) gives miles at each speed without one. Read against the model, each of its rows below 20 mph matches a ride with some pedaling.

Himiway's manual rows at 10, 15 and 20 mph; the energy per mile each implies from 960 Wh; the model's throttle-only miles at that speed; and the steady pedaling a 180 lb rider would add to match the row, flat, 77 °F.

At 20 mph, the manual's 58.2 miles matches a rider adding about 126 W, close to the 150 W that holds 13.3 mph with no motor at all. Plan with the throttle column if you ride with little pedaling.

The range arithmetic, step by step

The model computes the power to hold a speed, divides it through the chain, the motor and the battery, and turns watts into watt-hours per mile. Power at the wheel is Martin et al.'s validated road-cycling equation: rolling resistance plus climbing plus air drag, times speed.

One ride worked through: 180 lb on the 79 lb bike, 15 mph (6.71 m/s), flat, throttle only, 77 °F. Rolling takes 81 W and air 108 W, so the wheel needs 189 W, which is 194 W at the cranks after the chain. In the 20T cog the chainring turns at 80 rpm with 23.1 N·m on it.

At that speed and torque the motor model runs at 75.5%, drawing 256 W from the pack, and the pack's own efficiency of 96.8%, by Arango et al.'s equation, makes that 265 W of stored energy. At 15 mph, 265 W is 17.6 Wh a mile, and 960 Wh lasts about 54 miles, or 44 with 20% kept.

Himiway names no maker for the D5 Pro's motor, so its speed points come from Bafang's M600, a 500 W mid-drive of the same rating, under Himiway's own 130 N·m. That assumption is bracketed: on Bafang's 2018 figures for the same motor, the 15 mph easy-pedaling ride computes to 94 miles instead of 85, and at 85% efficiency to 99. The manual's 46T chainring changes it by less than a mile.

The motor model was checked against Arango et al.'s measured map of a 48 V mid-drive at seven speed and torque points, and lands within 2.7 points of efficiency of every band read from it.

Carrying: 400 lb, a rack and fenders

Himiway rates the D5 Pro for 400 lb, and a rear rack and a fender kit come in the box. The weight table above shows what a load does to the range: at the full 400 lb, the flat 15 mph throttle ride still computes to 41 miles.

Himiway's D5 Pro page pitches the bike at "Parents and commuters hauling heavy loads, trailers, or child seats", and at "All-terrain explorers navigating snow, sand, gravel, and mud". If your load is a stand and a pack for a hunt, our hunting e-bike guide and the rules for e-bikes on public land cover where an e-bike may go.

Brakes, lights and the display

Tektro HD-E3520 hydraulic brakes on 180 mm rotors stop the D5 Pro at both wheels, and Himiway's manual lists "comfort grip levers with motor cutoff switch". The brake sensor is one of the four sensors Himiway lists for the motor.

Himiway's own photograph of the D5 Pro's front brake, from the D5 Pro page, used whole; the rotor is stamped 180-52, the Tektro TR180-52 of Himiway's specification block.

Up front is a 48 V LED headlight, which Himiway's D5 Pro page calls an "ultra-bright 500LM spotlight". At the back sits a brake light that, in Himiway's words, "will be activated whenever you use the brake, which can prevent rear-end collisions while riding at night".

Himiway's own photograph of the D5 Pro's headlight, which its page calls a "48V 500LM Luminosity Spotlight", used whole.

The specification block lists a "KD718-P LCD display with Type-c charger"; the manual describes it as an "LCD display with USB charging".

Himiway's own photograph of the D5 Pro's integrated brake light, from the D5 Pro page, used whole.

The fork, the tires and the ride

The front fork is a TRAMA FAT34 with 100 mm of travel, a lockout and a 15 mm thru-axle; the rear is rigid, so the 26 × 4.0 Kenda tires do the rest. Lock the fork on pavement and open it on the trail.

Himiway's specification block lists one shock, "Alloy front suspension fork with lockout and adjustment", and its listing calls the 26 × 4.0 tires "puncture-resistant" and "Kenda K-shield fat tires". Among the checks the manual lists before a ride: "Inflate tires to within recommended limits displayed on sidewalls" (printed page 12).

Himiway's own photograph of the D5 Pro by the water, from the D5 Pro page, used whole.

If you want a rear shock on a 26-inch fat bike, the hub-drive D5 2.0 carries one; if you want a rear shock and a mid-drive, the D7 Pro is Himiway's.

The Mercer fit test

The Mercers are our editorial cast, a fixed family we hold every bike against; each verdict below reads the D5 Pro's published numbers and this page's fit model at that person's height.

Jack and Ruth are the D5 Pro in one pair: at 6'1" he clears the top tube with inches to spare and needs his inseam checked against the seatpost's top, while at 5'5" she has the saddle settled and the top tube in question. One frame cannot fix both, which is why Ruth's answer is the D5 2.0's step-thru and Jack's is his own inseam read against the saddle tables.

Is the Himiway D5 Pro UL certified?

Himiway's D5 Pro page states it: "UL-certified battery and electrical systems for worry-free riding." Himiway's Safety Certified page, read October 21, 2026, says the company designs its e-bikes "to meet UL 2849 safety standards across the lineup", and explains UL 2271 as the standard for e-bike battery packs.

UL 2849, in the words of UL Solutions, certifies fire safety "by examining the electrical drive train, battery, and charger system combinations in e-bikes". Himiway's own advice for a rebate application is to "Always check the physical certification label on your specific model and contact Himiway support for certification documentation if required for a rebate program."

If a rebate program asks you for the certificate holder and file number, name the program and we will ask Himiway for both in writing on your behalf.

Has the Himiway D5 Pro been recalled?

No. On October 29, 2026, a search of the federal Consumer Product Safety Commission's recall database and its full list of product safety warnings returned no record naming Himiway. The search covered recall titles, product names and manufacturers, word by word, with test searches that did return records to show each field was answering.

Recalls are posted on the CPSC's recalls page, which you can search by brand before any purchase.

The D5 Pro in Himiway's line

Within Himiway's D5 name, the D5 Pro is the mid-drive hardtail; the D5 2.0 is the full-suspension hub-drive in three frames, and the D5 (Zebra) is the hub-drive fat bike whose name the Pro carried as the Zebra Pro. Two other Himiway mid-drives sit outside the D5 line, the A7 Pro commuter and the D7 Pro mountain bike.

Motor and suspension as each review records them from Himiway's pages; prices on each model's main listing in our store, read from our store's records on October 29, 2026.

Choose the D5 Pro over the D5 2.0 if you climb and want the gears to work for the motor; choose the D5 2.0 for a rear shock or a step-thru frame. The hub-drive D5 (Zebra) sold here at $1,499, in one of its three colorways, on October 29, 2026.

Is the Himiway D5 Pro street legal? Its class

As Himiway lists it, a 500 W motor with a throttle that stops at 20 mph, the D5 Pro sits inside the e-bike definition of 47 states and the District of Columbia. New Jersey treats any throttle bike as a motorized bicycle, and Alaska and Kentucky have no e-bike definition in their statutes.

Himiway sells it in its Class 2 collection, "Class 2 Ebike with Throttle", read on October 29, 2026, and its page says the throttle reaches "up to 20 mph, No pedaling required". We screened those published figures, 500 W and 20 mph with a throttle, against each state's own statute, applying each statute's own boundary words.

Screened October 29, 2026, against our 51-jurisdiction rule table, which cites each state's own statute; the motor figure is Himiway's 500 W rating.

For a New Jersey address, open our New Jersey e-bike law page first, and in Alaska and Kentucky our Alaska and Kentucky pages say how the bike is treated instead. North Carolina's new three-class definition, in force December 1, 2026, under S.L. 2026-46, keeps the D5 Pro inside.

On National Forest System land the D5 Pro counts as a motor vehicle. The Forest Service's definition reads "Any vehicle which is self-propelled, other than" a vehicle on rails and a wheelchair or mobility device made for a person with impaired mobility (36 CFR § 212.1), and where a forest publishes a motor vehicle use map, 36 CFR § 261.13 says "it is prohibited to possess or operate a motor vehicle ... other than in accordance with those designations".

Unless another law provides otherwise, breaking a prohibition in that part is punishable by "imprisonment of not more than six months or a fine in accordance with the applicable provisions of 18 U.S.C. 3571 or both" (36 CFR § 261.1b). Before a hunt or a trail ride in a national forest, find your route on that forest's map, as our public land page shows.

Green flags / Red flags

What the D5 Pro does well comes first, five points each linked to its evidence; then five riders it does not fit, and where each should go next.

Green flags

• A mid-drive through nine gears. At 8 mph up an 8% grade, the 36T cog uses 45% less energy than the 15T (hills).
• About 54 miles from 960 Wh, computed. At 15 mph on the throttle, for a 180 lb rider on flat pavement (range).
• 130 N·m and a 400 lb payload. The rear rack and the fender kit come in the box (carrying).
• Hydraulic brakes with motor cutoff. Tektro HD-E3520 calipers on 180 mm rotors, and levers that cut the motor (brakes).
• Our price is Himiway's price. $1,999 here on October 29, 2026, Himiway's VIP price against its $2,599 list (buying).

Red flags, meaning who this bike is wrong for

• Riders under about 5'6". The step-over's top tube stands 31.1 inches; the D5 2.0's step-thru stands 19.3.
• Riders who want a rear shock. The D5 Pro is a hardtail; the D7 Pro review covers Himiway's full-suspension mid-drive.
• Riders who carry the bike. At 79 lb, check it against your car rack's per-bike limit, and plan for the stairs if it will live upstairs; ask us before you order.
• Riders over 6 feet. The seatpost's top setting is certain only for some; read your row in the saddle tables.
• Throttle riders in New Jersey. A throttle bike is a motorized bicycle there; read our New Jersey page before you order.

Buy it if / Buy something else if

Buy the D5 Pro if you want a fat bike that climbs with its gears, you have an inseam of 31.1 inches or more, and you ride sand, gravel, snow or pavement at up to 20 mph with loads up to 400 lb. On a full charge, the throttle alone at 15 mph takes a 180 lb rider about 54 miles over flat pavement, and the electricity for 1,000 such miles is about $3.20 a year.

Buy something else if:

• you are shorter than about 5'6": the D5 2.0 review covers a step-thru with a 19.3-inch standover;
• you want full suspension and a mid-drive: the D7 Pro review;
• you commute on pavement more than you ride trails: the A7 Pro review;
• you want to compare more fat bikes first: our fat-tire guide.

Before you buy: the checklist

Seven checks settle whether the D5 Pro suits your body, your load, your rides and your state before you order, each linked to the section of this review that answers it.

1. Inseam: 31.1 inches or more to straddle the top tube flat-footed (fit).
2. Height over 6 feet: check your inseam's row for the seatpost's top setting (saddle).
3. Load: you plus your gear at or under 400 lb (weight).
4. Range: plan from the "With 20% kept" column at your speed (range).
5. Charging: indoors, between 32 °F and 104 °F (battery).
6. Your state: a throttle bike to 20 mph; in New Jersey read our page first (class).
7. Color: Space Grey and White were available to order here on October 29, 2026 (buying).

Buying it from us

Our D5 Pro price matched Himiway's own US price when both were read on October 29, 2026, and these terms come with it. Each row names its source: our policies, our listing, our checkout or our own offer.

Each term is quoted from our terms of service, shipping policy or refund policy as published on October 29, 2026; the payment row is read from our checkout.

Our refund policy accepts a change-of-mind return only if you ask within 72 hours of delivery and the bike is still unopened in its factory-sealed packaging, with a 15% restocking fee and return shipping at the buyer's cost; canceling an order carries a 3% transaction fee.

Settle warranty questions before you pay. Registration and transfer follow the rules on Himiway's warranty page, and our terms say we "help facilitate warranty claims with the manufacturer". Write to us with the colorway you want, and before you order we will put in writing how a warranty repair works on a D5 Pro bought here.

Frequently asked questions

Is the Himiway D5 Pro a good e-bike?

For a rider with a 31.1-inch inseam or more who wants a fat bike that climbs with its gears, yes, by Himiway's figures: a 500 W mid-drive through nine Shimano gears, 960 Wh, hydraulic brakes and a 400 lb payload for $1,999. It is a hardtail at 79 lb, so riders who want a rear shock or a step-thru should read the D5 2.0 review.

How fast does the Himiway D5 Pro go?

Himiway's page says the D5 Pro reaches "up to 20 mph, No pedaling required", and sells it in its Class 2 collection. On flat pavement the motor's rated 500 W holds 20 mph for a 180 lb rider; up a 4% grade it holds 14.8 mph on the throttle, and up 10% about 8.3 mph, by our range model.

How much does the Himiway D5 Pro weigh?

Himiway lists the D5 Pro at 79 lb with the battery, and its payload at 400 lb. The manual says the pack can be charged on or off the bike, so you can carry it indoors to charge.

How far does the D5 Pro go on one charge?

About 54 miles on the throttle at 15 mph over flat pavement for a 180 lb rider at 77 °F, from the full 960 Wh, or 44 with Himiway's advised 20% kept; 85 with easy pedaling at 75 W. Himiway lists 60 to 80 miles, which the model matches with some pedaling (range).

What motor does the D5 Pro have?

A 500 W torque-sensing mid-drive at the cranks, which Himiway rates at 1,300 W peak and 130 N·m. Himiway's documents name no motor maker, so this review calls it Himiway's 500 W mid-motor; it reads torque, shifting, speed and brake sensors (motor).

Is the D5 Pro the same bike as the Zebra Pro?

Yes, by Himiway's own listing: "The Himiway D5 Pro (formerly the Zebra Pro) is a premium, all-terrain electric fat bike". The D5 (Zebra) without "Pro" is a different bike, a hub-drive, which we sell separately (family).

What is the difference between the D5 2.0 and the D5 Pro?

The motor and the suspension. The D5 Pro drives through its gears with a 500 W mid-drive and has a front fork only; the D5 2.0 uses a 750 W rear hub, adds a rear shock and comes in three frames. Both sold from $1,999 here on October 29, 2026 (family).

Is there a step-thru D5 Pro?

Himiway makes a D5 Pro ST with a 22.4-inch standover on its drawing, against the step-over's 31.1, but every variant of our D5 Pro ST listing was sold out on October 29, 2026. For a step-thru fat bike you can order, read our D5 2.0 review.

What size rider fits the D5 Pro?

Himiway lists riders from 5'3" to 6'5". The deciding figure is inseam: 31.1 inches clears the top tube, which 72 of 100 riders at 5'6" in ANSUR II have. A 5'8" rider with a 32.6-inch inseam sets the saddle 28.9 inches from the crank axle, within reach of the post's top setting (fit).

Can a heavy rider ride the D5 Pro?

Yes, up to Himiway's 400 lb payload for you and your load. At 250 lb the flat 15 mph throttle ride computes to 49 miles and at 400 lb to 41, against 54 at 180 lb. Steep climbs slow it most: see the weight table before you load it to the limit.

Is a mid-drive better than a hub motor?

On climbs, shifting to a bigger cog spins a mid-drive's motor faster for the same road speed; computed with a measured mid-drive map, the D5 Pro's 36T cog uses 45% less energy than the 15T up an 8% grade at 8 mph. On the flat the gear changes battery use by 10 to 16%. A hub motor spins with the wheel, whatever gear you are in (motor).

What is a torque sensor on an e-bike?

A sensor that measures the force on the pedals, so the motor's help rises and falls with your effort. In Texas Instruments' engineering brief, control algorithms "set a variable motor drive with respect to the human energy output". The D5 Pro lists a torque sensor among its four (torque sensor).

Can the D5 Pro ride in snow and sand?

Himiway's D5 Pro page pitches it for "snowy mountain trails" and "sandy beaches" on 26 × 4.0 Kenda tires. Cold costs range: at 32 °F the 15 mph easy-pedaling ride computes to about 64 miles against 85 at 77 °F. Charge only between 32 °F and 104 °F, by the manual (cold).

What comes in the box with the D5 Pro?

The bike, a fender kit, a rear rack, a 16-in-1 tool, the charger and the manual, by Himiway's "Included in Delivery" list on the D5 Pro page. The charger is Himiway's "U.S. standard 3.0 A fast charger".

How much does the D5 Pro cost?

$1,999 on our store on October 29, 2026, Himiway's VIP Early Black Friday price, against Himiway's regular $2,599. Shipping is free within the contiguous United States, and the charge for a full 960 Wh is about 17 cents at the US residential average (battery).

Is the D5 Pro good for hunting?

It carries 400 lb with a rack in the box, by Himiway's specification, and climbs in its low gears, which suits a pack and a stand. It comes in Space Grey, Green and White; for a camouflage frame, the D5 2.0 is sold here in Camo (our D5 2.0 review). Our public land e-bike rules set out where you may ride it.

Limitations of this review

The D5 Pro's range and fit on this page are computed from Himiway's published figures and from published research, and each item below names an assumption or a limit of that method so you can weigh it.

1. We sell the D5 Pro. If one of the red flags above describes you, send us your question before you order.
2. The motor is modeled from a comparable motor. Himiway names no maker for the D5 Pro's 500 W mid-drive, so its speed points are Bafang's for the 500 W M600, under Himiway's 130 N·m; on Bafang's 2018 figures or at 85% efficiency, the 15 mph easy-pedaling ride runs 94 or 99 miles instead of 85.
3. Steady riding only. The model holds a speed with no stops, starts or wind, the cells at air temperature; stop-start riding and headwinds cost more.
4. The tire is bracketed. Himiway prints "Kenda 26*4.0" with no tread name, so the model uses the median of ten measured 26 × 4.00 tires, with the lightest and heaviest beside it.
5. The pack's usable share is Himiway's advice. The model plans with the 20% Himiway's post advises keeping; the battery management system's own cut-off is not published.
6. Speeds stop at 20 mph, the throttle speed Himiway lists for the D5 Pro.
7. Fit counts Army bodies. ANSUR II measured US Army personnel aged 17 to 58 from 2010 to 2012, whose proportions may differ from the wider public's.
8. The seatpost's ceiling is read as a vertical height. Himiway's seat figures are taken as heights straight up from the crank axle, which its own drawing bears out to within 3.0%, so the saddle tables count only the certain cases and leave some riders over 6 feet unsettled either way.
9. Lean and hand load are not computed, because no grip position can be read from Himiway's drawing, where the bar is drawn end-on; the cockpit figures printed are Himiway's own.
10. The heel check and the knee range are starting points. The 25 to 35 degree knee range is what the cycling literature recommends, and the heel check put 70% of riders inside it in one study of 19 trained cyclists; fine-tune the saddle by feel.
11. Two Himiway documents differ on the gears, chainring, throttle style, head angle (65° on the page, 68° in the manual) and seat range; this review prints both and models the page's drivetrain.
12. Himiway's range table states no conditions, so this page maps it to the ride that matches it; no measurement is printed to check it against.
13. Prices and availability are as read on October 29, 2026. The $1,999 is Himiway's VIP Early Black Friday price and may change when the sale ends.
14. The class screen reads the statutes. Local park and trail rules are on our state pages.
15. The UL statement is Himiway's page line. The certificate holder and file number come from Himiway, and we request them for any buyer who needs them.

The bottom line

Buy the Himiway D5 Pro if you want a fat bike that climbs with its gears, carries up to 400 lb and stops on hydraulic brakes, and your inseam is 31.1 inches or more. At $1,999, it computes to about 54 miles for a 180 lb rider on the throttle at 15 mph over flat pavement, or 85 with easy pedaling, and about $3.20 of electricity for 1,000 miles a year.

Skip it if you are under about 5'6", want a rear shock or ride in New Jersey with a throttle: the D5 2.0, the D7 Pro and our New Jersey page cover those riders.

Not sure which side you are on? Send your height, inseam and usual ride to support@redtailebikes.com; if another bike suits you better, our reply will say so.

Image credit: every photograph on this page is Himiway's own file from its D5 Pro page, used whole; the cover sets one of them, at one scale, on a blurred and darkened enlargement of itself, with our type over the background and never over the bike.

Source register

Each document behind this review, with the tier of its publisher (T1 government records, T2 the maker's own documents, our own policies and the studies, T3 reference works and engineering briefs), what it supports here and the day we read it.

Expiry conditions

This review stands as written until one of these five events happens; each would change a figure above, and the page is re-read against its sources when one does:

1. Himiway changes the D5 Pro's motor, pack, gearing, payload or geometry on its page or in its manual.
2. Himiway's VIP Early Black Friday price ends, or our price or stock changes.
3. A state named in the class section changes its e-bike definition, or New Jersey changes its throttle rule.
4. The CPSC posts a recall or warning naming Himiway.
5. Himiway names the D5 Pro's motor maker, which would replace the comparable motor in the range model.

References

The same documents, numbered for citation: the publisher, the title, the passage this review relies on, the day it was read and the full web address.

1. U.S. Army Natick Soldier Research, Development and Engineering Center, 2012 Anthropometric Survey of U.S. Army Personnel (ANSUR II), public data release 2017. US Army ANSUR II survey, 6,068 bodies (4,082 men, 1,986 women): the inseams behind the standover, saddle and Mercer tables. Retrieved September 26, 2026. https://www.army.mil/article/188601/for_good_measure_natick_releases_raw_data_from_army_wide_anthropometric_survey
2. Journal of Exercise Physiology Online (American Society of Exercise Physiologists), Peveler W, Bishop P, Smith J, Richardson M, Whitehorn E. Comparing Methods For Setting Saddle Height In Trained Cyclists. JEPonline 8(1):51-55. Peveler et al. (2005): the 109% of inseam formula (Hamley and Thomas) and LeMond's 88.3%, as the study compared them; the heel method fell in the 25 to 35 degree knee range 70% of the time, LeMond's 65% and Hamley's 55%. Retrieved September 26, 2026. https://www.asep.org/asep/asep/JEPonlineFEBRUARY2005_PevelerSaddle.doc
3. Journal of Strength and Conditioning Research (NSCA), Ferrer-Roca V, Roig A, Galilea P, Garcia-Lopez J. Influence of saddle height on lower limb kinematics in well-trained cyclists: static vs. dynamic evaluation in bike fitting. J Strength Cond Res 26(11):3025-9; doi 10.1519/JSC.0b013e318245c09d. Ferrer-Roca et al. (2012): 106 to 109% of inseam, the range they cite as recommended, and 108.6 to 110.4%, the one they propose; the page's 106% and 110.4% columns span the two. Retrieved September 25, 2026. https://pubmed.ncbi.nlm.nih.gov/22190163/
4. University of Colorado Boulder (MS thesis), Carahalios A. An Analysis of the Bicycle-Rider Interface Forces in Stationary Road Cycling (MS thesis, Department of Integrative Physiology, University of Colorado). Carahalios (2015): about 15% of body weight through the stem for ten male road racers on the hoods, the hand-load landmark given for scale only. Retrieved September 25, 2026. https://scholar.colorado.edu/downloads/70795789x
5. Journal of Strength and Conditioning Research (NSCA), Peveler, Pounders & Bishop, Effects of saddle height on anaerobic power production in cycling, JSCR 21(4):1023-7. Peveler, Pounders and Bishop (2007): the 25 to 35 degree knee angle at the bottom of the stroke, the range they attribute to the cycling literature. Retrieved September 25, 2026. https://pubmed.ncbi.nlm.nih.gov/18076230/
6. World Electric Vehicle Journal (MDPI), Arango I, Lopez C, Ceren A. Improving the Autonomy of a Mid-Drive Motor Electric Bicycle Based on System Efficiency Maps and Its Performance. Arango, Lopez and Ceren (2021): the measured efficiency map of a 48 V mid-drive (about 78 to 80% at 90 to 115 rpm and 20 to 55 N·m, 50 to 60% at 25 rpm or below) and the battery-efficiency equation (Eq. 40, 97.1% at no load). Retrieved October 4, 2026. https://mdpi-res.com/d_attachment/wevj/wevj-12-00059/article_deploy/wevj-12-00059.pdf
7. Himiway, Should You Charge Your E-Bike After Every Ride? The 20-80 Rule. Himiway, 'Should You Charge Your E-Bike After Every Ride? The 20-80 Rule': 'avoid letting the charge drop below 20%', the range model's planning reserve. Retrieved October 21, 2026. https://himiwaybike.com/blogs/news/should-you-charge-your-e-bike-after-every-ride
8. U.S. Energy Information Administration, Electric Power Monthly, Table 5.6.A. Average Price of Electricity to Ultimate Customers by End-Use Sector. US EIA Electric Power Monthly Table 5.6.A: the August 2026 US residential average, 18.16 cents per kilowatt-hour, behind about 17 cents a full charge and about $3.20 per 1,000 miles at 15 mph on the throttle. Retrieved October 29, 2026. https://www.eia.gov/electricity/monthly/epm_table_grapher.php?t=epmt_5_06_a
9. Bicycle Rolling Resistance (Jarno Bierman), Fat Bike Tires Test Results. Bicycle Rolling Resistance fat-bike drum tests: ten 26 x 4.00 fat tires, the median 0.0105 used and the lightest and heaviest beside it. Retrieved September 25, 2026. https://www.bicyclerollingresistance.com/fat-bike-reviews
10. Journal of Sports Sciences (Taylor & Francis), Physical characteristics and resistance parameters of typical urban cyclists (Tengattini S, Bigazzi AY). Tengattini and Bigazzi (2018): the 0.603 m2 drag area of everyday riders on mountain bikes, and the field rolling resistance of knobby tires. Retrieved October 4, 2026. https://civil-reactlab.sites.olt.ubc.ca/files/2022/11/Tengattini_2018_Physical-characteristics-and-resistance-parameters-of-typical-urban-cyclists.pdf
11. Journal of Applied Biomechanics (Human Kinetics), Validation of a Mathematical Model for Road Cycling Power (Martin JC, Milliken DL, Cobb JE, McFadden KL, Coggan AR), J Appl Biomech 14(3):276-291. Martin et al. (1998): the road-cycling power equation behind every range figure and its 97.698% chain efficiency. Retrieved October 4, 2026. https://collections.lib.utah.edu/dl_files/b4/8e/b48ef26086091662c561e673d7bd990d77868437.pdf
12. Bafang, OEM Workbook 2021. Bafang's OEM workbook (2021): the 500 W M600 mid-drive's speed and efficiency points (130 rpm no-load, 115 rpm at 500 W, 80%), the comparable motor behind the range model under Himiway's 130 N·m. Retrieved October 3, 2026. https://www.bafang-e.com/Uploaded/Labels/BAFANG%20Workbook%20OEM%202021.pdf
13. McMaster University (Kollmeyer et al.), Mendeley Data, LG 18650HG2 Li-ion Battery Data. LG HG2 18650 cell data (Kollmeyer, McMaster University): pack energy by temperature behind the cold table. Retrieved October 4, 2026. https://doi.org/10.17632/b5mj79w5w9.2
14. NOAA, NASA, US Air Force, U.S. Standard Atmosphere, 1976 (NOAA-S/T 76-1562; NASA TM-X-74335). U.S. Standard Atmosphere, 1976: air density by temperature behind the range model's air term. Retrieved October 4, 2026. https://ntrs.nasa.gov/api/citations/19770009539/downloads/19770009539.pdf
15. Himiway, Safety Certified — himiwaybike.com. Himiway's Safety Certified page: Himiway designs its e-bikes 'to meet UL 2849 safety standards across the lineup'; its UL 2271 explanation; 'Always check the physical certification label on your specific model and contact Himiway support for certification documentation if required for a rebate program'. Retrieved October 21, 2026. https://himiwaybike.com/pages/safety-certified
16. UL Solutions, E-Bikes Certification: Evaluating and Testing to UL 2849. UL Solutions: UL 2849 certification 'by examining the electrical drive train, battery, and charger system combinations in e-bikes'. Retrieved October 28, 2026. https://www.ul.com/services/e-bikes-certificationevaluating-and-testing-ul-2849
17. U.S. Consumer Product Safety Commission, Recalls & Product Safety Warnings. CPSC recalls and warnings on October 29, 2026: no recall returned for 'himiway' by recall title, product name or manufacturer, and no Himiway row among the 383 rows of the product safety warnings list; each field's control search returned records the same day. Retrieved October 29, 2026. https://www.cpsc.gov/Recalls
18. New Jersey Legislature, P.L.2025, c.285. New Jersey P.L.2025, c.285: a bicycle whose motor moves it without pedaling is a motorized bicycle, which must be registered, licensed and insured. Retrieved October 27, 2026. https://pub.njleg.gov/Bills/2024/PL25/285_.HTM
19. Alaska State Legislature, Alaska Statutes § 28.90.990. AS 28.90.990: Alaska's motor vehicle definitions, with no e-bike definition. Retrieved October 25, 2026. https://www.akleg.gov/basis/statutes.asp?media=print&secStart=28.90.990&secEnd=28.90.990
20. Kentucky General Assembly, Kentucky Revised Statutes § 189.010. KRS 189.010: Kentucky's traffic definitions, with no e-bike definition. Retrieved October 25, 2026. https://apps.legislature.ky.gov/law/statutes/statute.aspx?id=57661
21. North Carolina General Assembly, Session Law 2026-46 (House Bill 1094). North Carolina S.L. 2026-46, section 19: G.S. 20-4.01(7a) rewritten into three classes from December 1, 2026 (19(f)). Retrieved October 23, 2026. https://www.ncleg.gov/EnactedLegislation/SessionLaws/HTML/2025-2026/SL2026-46.html
22. Redtail eBikes, Terms of service. Our terms of service: the Florida company that does business as Redtail eBikes and sells the D5 Pro; 'file a freight claim on your behalf'; 'help facilitate warranty claims with the manufacturer'. Retrieved October 29, 2026. https://redtailebikes.com/policies/terms-of-service
23. Redtail eBikes, Shipping policy. Our shipping policy: 'free shipping on every electric bike within the contiguous United States'; dispatch within 1-3 business days; 'most e-bikes arrive within 5-10 business days after dispatch'; remote areas 'may incur additional charges or be excluded'. Retrieved October 29, 2026. https://redtailebikes.com/policies/shipping-policy
24. Redtail eBikes, Refund policy. Our refund policy: damage photos within 48 hours of delivery; a defect 'is covered under manufacturer warranty — we coordinate repair or replacement remotely'; change-of-mind returns within 72 hours of delivery, factory-sealed, with a 15% restocking fee and return shipping; a 3% fee on canceled orders. Retrieved October 29, 2026. https://redtailebikes.com/policies/refund-policy
25. Himiway, eBike Warranty Policy — himiwaybike.com. Himiway's warranty page: Himiway's own terms for warranty registration and transfer. Retrieved October 21, 2026. https://himiwaybike.com/pages/warranty
26. Forest Service, USDA (eCFR), 36 CFR § 212.1 — Definitions. 36 CFR § 212.1: on National Forest System land a 'Motor vehicle' is 'Any vehicle which is self-propelled, other than' a rail vehicle or a mobility device, so the D5 Pro is one there. Retrieved October 29, 2026. https://www.ecfr.gov/current/title-36/chapter-II/part-212/subpart-A/section-212.1
27. Forest Service, USDA (eCFR), 36 CFR § 261.13 — Motor vehicle use. 36 CFR § 261.13: where a forest's routes are designated on a motor vehicle use map, 'it is prohibited to possess or operate a motor vehicle ... other than in accordance with those designations'. Retrieved October 29, 2026. https://www.ecfr.gov/current/title-36/chapter-II/subchapter-B/part-261/subpart-A/section-261.13
28. Forest Service, USDA (eCFR), 36 CFR § 261.1b — Penalty. 36 CFR § 261.1b: breaking a part 261 prohibition is punishable by 'imprisonment of not more than six months or a fine in accordance with the applicable provisions of 18 U.S.C. 3571 or both'. Retrieved October 29, 2026. https://www.ecfr.gov/current/title-36/chapter-II/subchapter-B/part-261/subpart-A/section-261.1b
29. Himiway, D5 Pro / All-terrain Electric Fat Bike — product page. Himiway's D5 Pro page for the US market: the specification block (500 W torque-sensing mid-drive, 1,300 W peak, 130 N·m; 48 V 20 Ah, 960 Wh; Shimano Altus M2000 9-speed, CS-HG201-9 11-36T, 44T chainring; Tektro HD-E3520 hydraulic brakes on 180 mm rotors; TRAMA FAT34 fork, 100 mm, lockout, 15 mm thru-axle; Kenda 26*4.0 tires; 79 lb; 400 lb payload; riders 5'3" to 6'5"; up to 20 mph on the throttle; 60 to 80 miles), its geometry drawing (31.1 in standover; seat heights 20.9 and 31.4 in; 65 degree head angle), 'formerly the Zebra Pro', the UL line, the feature panels and 'Included in Delivery'; $2,599 in Space Grey, Green and White on its product record. Retrieved October 29, 2026. https://himiwaybike.com/products/all-terrain-electric-bike-d5pro
30. Himiway, D5 Pro / All-terrain Electric Fat Bike VIP Early Black Friday — product page. Himiway's D5 Pro VIP Early Black Friday page: $1,999 in Space Grey, Green and White against a $2,599 compare-at price, the same specification block as the D5 Pro page. Retrieved October 29, 2026. https://himiwaybike.com/products/d5-pro-all-terrain-electric-fat-bike-vip-early-black-friday
31. Himiway, D5 Pro user manual (PDF, 27 pages). Himiway's D5 Pro user manual: the specification pages (20.9 in minimum seat height, 9.5 in of adjustment, 68 degree head angle, 46T chainring, 'comfort grip levers with motor cutoff switch', 'LCD display with USB charging'); the range reference table; charging between 32 °F and 104 °F; 'Do not fully drain your battery'; 'Fully charge the battery after each use'; the seatpost's minimum insertion mark; the 15% grade limit; five pedal-assist levels and the pedal-only level 0; 'Visit himiwaybike.com to download the latest version'. Retrieved October 29, 2026. https://cdn.shopify.com/s/files/1/0255/9528/1483/files/D5_pro.pdf?v=1709186499
32. Himiway, Himiway D5 Pro — help center article. Himiway's help center article for the D5 Pro, which links the D5 Pro manual and the pre-ride safety check. Retrieved October 29, 2026. https://help.himiwaybike.com/hc/en-us/articles/23350863275803-Himiway-D5-Pro
33. Himiway, Class 2 e-bikes collection. Himiway's Class 2 collection, 'Class 2 Ebike with Throttle': the D5 Pro listed beside the hub-drive D5 2.0 and D5 (Zebra). Retrieved October 29, 2026. https://himiwaybike.com/collections/class-2-ebikes
34. Shimano, CS-HG201-9 cassette sprocket — Shimano product page (Internet Archive capture of April 20, 2024). Shimano's CS-HG201-9 listing: the 11-36T cassette's cogs, 11-13-15-17-20-23-26-30-36, the gear table's ratios. Retrieved October 29, 2026. https://web.archive.org/web/20240420173204/https://bike.shimano.com/en-US/product/component/altus-m2000/CS-HG201-9.html
35. Texas Instruments, Position Sensing in e-Bike Applications (application brief SLYA077). Texas Instruments, 'Position Sensing in e-Bike Applications': torque sensing at the crank gives 'instantaneous feedback from the rider', and 'Control algorithms can set a variable motor drive with respect to the human energy output'; bottom-bracket sensors are 'commonly implemented using a strain gauge mounted on the axle of the pedal crank'. Retrieved October 29, 2026. https://www.ti.com/lit/ab/slya077/slya077.pdf