Smartravel M23 Review 2026: ZonMen 6,500 W Dirt Bike

Electric dirt bike with pedals · one rear hub motor, rated 3,000 W nominal and 6,500 W peak by Smartravel · 60 V 30 Ah, 1,800 Wh · 28 mph in Eco and 50 mph in Sport, as published · 200 N·m · full suspension · hydraulic disc brakes · 70/100-19 tires on spoked wheels · Shimano 7-speed · 117 lb · a fixed seat, 33.07 inches on the geometry tables · $1,249.99 · verified September 27, 2026

Quick Answer — The Smartravel M23 is a $1,249.99 electric dirt bike with pedals: a rear hub motor rated 3,000 W nominal and 6,500 W peak, a 1,800 Wh pack and 50 mph published in Sport. At a steady 15 mph on the throttle over flat pavement, a 180 lb rider can count on about 84 miles from a full charge.

At 20 mph that charge stretches to about 64 miles, and at 40 mph to about 20. The range section prices your own speed, weight and climbing, then sets a quarter of the pack aside.

The seat is fixed and tall, so the fit section reads your stops by height: on its padded top, 53 of 100 riders at 5'11" set both feet flat, and 75 of 100 at 6'0". At 3,000 W and 50 mph the M23 sits above the e-bike lines in federal and California law, and the class section marks out where it belongs: private land and designated off-highway riding areas.

What this review covers

What $1,249.99 buys · What it is · Will it fit you · The motor · The pack · How far it goes · Brakes and controls · Suspension · Weight and load · Rain, parts and care · The Mercer fit test · UL · Recalls · The class question · Where to ride it · Green and red flags · The verdict · Checklist · Buying it from us · FAQ · Limitations · The bottom line · References

How we verified this Smartravel M23 review

The figures come from the M23's page on each of the three stores that sell it for its maker group, Smartravel's US store, ZOONLAI's and ZonMen-BK's, each read on September 27, 2026, with our listing, RunPlayBack's review and the statutes in the class section. The range and fit figures are computed, each formula shown with its inputs.

The method is specification verification: every figure is checked against the maker group's published specification and recomputed, and each traces to one of those stores, a statute, a named reviewer or owner, or arithmetic on this page. We sell the M23, so weigh the red flags as closely as the green.

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

What $1,249.99 buys

Every row comes from the specification table on Smartravel's M23 page, read September 27, 2026, unless it names ZOONLAI's or ZonMen-BK's listing of the same machine. Rows where the stores differ show both figures, and Limitations keeps the rest; 60 V × 30 Ah is the 1,800 Wh.

What the M23 is: an electric dirt bike that keeps its pedals

The M23 is the dirt bike of Smartravel's range: knobby 19-inch tires, suspension at both ends and a rear hub motor rated 3,000 W nominal, with pedals and a Shimano 7-speed on the same frame. ZOONLAI describes it as "built to dominate trails, dirt roads, sand, and steep climbs with ease" on its listing.

The M23 on a rocky slope in Smartravel's photograph, the rider seated and the rear tire throwing dust.

It reaches buyers under two names. Smartravel sells it as the Smartravel M23; ZOONLAI and ZonMen-BK sell it as the ZonMen M23, and the panel on its battery box reads ZONMEN-BK. The ZONMEN-BK trademark, registration 7,557,204, is held by Huizhou Zhongmeng Zhixing Technology Co., Ltd., the owner of the SMARTRAVEL mark, and our Smartravel brand profile traces the group's names.

ZonMen-BK listed it first: its product record dates from April 11, 2026, and Smartravel's from May 28, 2026.

Black with orange graphics, the one version all three stores list, in Smartravel's studio.

The review on Smartravel's own page is RunPlayBack's. After a first full-throttle run, the reviewer wrote that the M23 "ripped past 50 mph way easier than I expected—and it did it with a throttle tune that felt genuinely polished" (RunPlayBack's review). Six owner reviews sit on ZonMen-BK's page, written May 1 to 6, 2026, and the setup notes and the FAQ quote three of them.

Will the Smartravel M23 fit you?

The M23's seat is fixed and tall, so fit comes down to how your feet meet the ground at a stop and how far your knee folds on the pedals. On the padded top, 5 of 100 riders at 5'8" set both feet flat, 53 of 100 at 5'11" and 75 of 100 at 6'0"; for pedaling, the seat sits under the 109%-of-inseam height of the median rider at every height in the tables.

The model runs the 6,068 bodies of the US Army's 2012 anthropometric survey against the seat heights the stores print and the frame measured on Smartravel's own side photograph of the M23.

Three steps put you in a row:

1. Take your inseam: stand barefoot against a wall, pull a thick book up snug between your legs, and measure from the floor to the book's spine.
2. Read your row in the stop table, which counts the riders of your height who can set both feet flat astride the seat.
3. Then read the pedaling table if you plan to turn the cranks; it shows how far the seat falls below the formula's height for you.

The group's stores print three rider-height windows and one seat height, and each sits beside the model's rows in this section.

ZOONLAI's dimension drawing. F, the 33.07-inch seat height, runs to the seat's front edge; the drawing's weight, load and rider-height figures are ZOONLAI's own, set beside Smartravel's in the weight section.

Can you pedal the M23? How far your knee bends

You can, with the knee well bent: at every height from 5'4" to 6'4" the fixed seat sits below the saddle height the pedaling formula sets for the median rider, by 8.0 inches at 5'4" and by 15.4 at 6'4". The formula puts the saddle's top 109% of inseam above the pedal axle (Peveler et al., 2005), inside a published band that reaches down to 106% (Ferrer-Roca et al., 2012).

The reason is the crank's height. On Smartravel's side photograph the crank axle stands 17.3 inches off the ground, clear of rock and ruts, and the cranks measure 7.07 inches, so the formula's saddle ends up far above the padded top.

Columns, left to right: the inseam range from the 5th to the 95th percentile rider at each height, the floor-to-saddle height that 109% of the median inseam calls for, how far the 34.26-inch seat top falls short of it, and the riders of 100 whose own 106 to 110.4% band takes in the seat. US Army survey bodies, men and women together.

The crank and pedals under the battery box, cropped from Smartravel's side photograph.

The pedals do their best work at low speed. Smartravel's page explains that a magnetic sensor on the crank switches the motor on as the pedals turn, much as the throttle does, and the effort table shows what your legs save the pack when you pedal.

Will my feet reach the ground at a stop?

From about 5'11" up, mostly: on the padded top, 53 of 100 riders at 5'11" set both feet flat, 75 of 100 at 6'0" and 92 of 100 at 6'1". Shorter riders stop on their toes there: 29 of 100 at 5'10", 14 of 100 at 5'9" and 5 of 100 at 5'8".

The stores print the seat at 33.07 inches, measured to its front edge above the battery box; the padded top, where you sit, measures 34.26 inches on Smartravel's photograph. Sliding forward to that front edge gains ground: 79 of 100 riders at 5'10" and 55 of 100 at 5'9" set both feet flat there.

Each cell counts, of 100 survey bodies at that height, the riders whose barefoot inseam is at least the seat's height: 34.26 inches at the padded top on Smartravel's photograph, and 33.07 inches at the front edge, the figure ZOONLAI and ZonMen-BK print. The inseam column is the median rider's.

The seat runs flat from the tail light to the battery box; its front edge is where the published 33.07 inches is drawn.

Below about 5'10", plan each stop: lean the M23 toward the foot you put down, or ease forward to the seat's front edge as you brake.

Will I sit upright or lean over the bars?

Upright: on the seat's front flat, the median rider at every height from 5'4" to 6'4" reaches the grips with the back vertical, a lean of 0°. On Smartravel's photograph the grips sit 13.94 to 15.82 inches ahead of the crank axle and 30.58 to 32.17 inches above it, high and close to the seat.

When twenty recreational cyclists tried three trunk angles, they rated the most upright position the most comfortable (Priego Quesada et al., 2017). Each row below is the smallest forward tilt at which a straight arm reaches the grip, worked from that body's own torso and arm lengths.

The trunk angle from vertical at which a straight arm first meets the grip, for the median rider on the seat's front flat, with the spread across the seat and grip positions the photograph allows. Only the shortest rows ever tilt forward.

How much of my weight lands on my hands?

Very little: sitting upright with a relaxed back, the median rider rests 5% of body weight on the grips at 5'4" and 6% at 6'4". In Carahalios's 2015 laboratory study, ten road racers riding on the brake hoods put 15% through the bars, well above the M23's median rider at any height here.

Leaning toward low bars shifts the load onto the heel of the hand, over the ulnar nerve. In Slane and colleagues' 2011 work with 36 riders, palm pressure peaked in the most stretched hand position, and padded gloves lowered it by 10 to 28%; an upright seat keeps you far from that position.

Hand load is a ceiling, from the head, trunk and arm weights in Clauser and colleagues' segment data, the survey's median body weight at each height and the lean in the cockpit table. The bracket covers the seat's flat and the grip's outline.

What to set up when the M23 arrives

The seat stays as it comes; the setup is the bars, the pedals and, if you want them swapped, the brake levers. Our listing notes that the battery, the charger, the battery keys and the pedals travel in their own FedEx parcel, so expect two deliveries.

Owners on ZonMen-BK's page describe short builds. Angelo B. wrote, "Bike arrived mostly assembled," and put the build at "about 30 mins"; FREDERICK B. finished "in just over an hour" and added, "The tools that are needed are included with the bike."

RunPlayBack's reviewer points out that the M23 leaves the factory with the rear brake lever on the right. To move it to your left hand, have the hoses swapped along with the levers, which is the reviewer's own advice: "plan to do it properly by swapping hoses/lines" (the review).

Before the first ride, try the heel check: sit on the seat, rest a heel on the lower pedal and note how far the leg sits from straight. Cycling research aims the knee at 25 to 35 degrees of bend with the pedal at the bottom (Peveler et al., 2007); on a seat that does not move, the check shows you the bend you will pedal with.

The fit arithmetic, worked through

The tables rest on four pieces of arithmetic. Pedaling height is 1.09 times inseam, measured from the pedal axle; your footing at a stop is inseam minus seat height; lean is the smallest forward tilt at which a straight arm meets the grip; and the hands carry the upper body's weight in proportion to that tilt.

Picture a 5'8" rider with the survey's median inseam for that height, 32.6 inches. The formula wants the saddle 35.6 inches from the pedal, which is 28.5 inches from the crank axle along the seat line (LeMond's 88.3% of inseam gives 28.8), and so 44.4 inches off the ground, some 10.2 inches above the M23's padded top.

Every length comes from Smartravel's studio side photograph of the M23, square to the camera and scaled by the 43.7-inch wheelbase ZOONLAI and ZonMen-BK publish. Before a length was read off it, the scale was held against the stores' other figures:

Five checks agree within 2.4%, and the published seat height lands on the seat's front edge as drawn. The tables' 44.88-inch total height, drawn to the handlebar, sits further off, and Limitations keeps it.

Smartravel's side view of the M23, the photograph every fit length is read from.

The two saddle formulas land close together on this crank. Add the 7.07-inch crank to LeMond's 88.3% from the crank axle, and the median 5'8" rider's saddle comes to 110.2% of inseam from the pedal, inside the 106 to 110.4% band; on Peveler and colleagues' riders, the LeMond method measured 109.2 ± 0.9%.

One rear hub motor: 3,000 W nominal, 6,500 W peak

Smartravel's specification table rates the M23's single rear hub at "3000W Nominal / 6500W Peak" with 200 N·m, driven by a "Fardriver Brushless Motor Controller 80A / 260A". The range model holds the motor to the 3,000 W nominal rating, which carries the M23 at up to 42.2 mph on the flat; the published 50 mph in Sport draws on the peak (the range tables).

The rear hub with its torque plate at the axle, cropped from Smartravel's side photograph.

Two modes set the top speed: 28 mph in Eco and 50 mph in Sport, in Smartravel's specification table. On RunPlayBack's first full-throttle pull the reviewer called out "30. 40." and then "49, 50" and "52" (the video, July 9, 2026).

What the review praises most is how the power arrives. "The throttle tuning on this bike is really smooth—especially for something that can run up over 50 mph," it reads, and "Power comes on in a predictable way"; at speed the reviewer found that the M23 "feels really stable on the road" (the written review; the video).

The same walk-around shows torque arms at the rear axle, "a nice touch" in the reviewer's words, and the written review adds that "Torque arms on the rear are a good sign, especially for a higher-powered hub setup."

The seven Shimano gears belong to your legs alone. The motor sits in the rear wheel and turns at the wheel's speed whichever cog the chain is on, and our e-bike motor guide sets hub and mid-drive motors side by side.

A 60 V 30 Ah pack: 1,800 Wh

60 V × 30 Ah is 1,800 watt-hours, the M23's whole store of energy, in one pack of "96×21700 cells". The pack lifts out: RunPlayBack showed the lid over it, and the battery "is removable when you unlock the lid" (the video).

The battery box in the middle of the frame, ZONMEN-BK and M23 on its panel.

The charger's rating tells you how the cells are arranged. Its 67.2 V is 16 cells' worth of the 4.2 V full-charge voltage on Samsung's data sheet for a 21700 cell, so by that arithmetic the 96 cells make 16 groups of 6, and 30 Ah across 6 cells is 5 Ah a cell.

Charging: plan on a night from empty, and on 4 to 6 hours for a top-up. Smartravel gives "4-6 H" on the included 67.2 V 3.5 A charger. At 3.5 A, 30 Ah takes 8.6 hours of full charging current, and 4 to 6 hours puts back 14 to 21 Ah, about half to seven tenths of the pack.

A spare pack is listed. ZonMen-BK's store prices the M23 Battery Pack at $699.99, "the official replacement lithium battery for the ZonMen M23", and the parts section lists the rest.

How far the Smartravel M23 goes on one charge

A full charge carries a 180 lb rider about 84 miles at a steady 15 mph on the throttle over flat pavement, about 64 miles at 20 mph and about 119 miles at 15 mph with easy pedaling. Up an 8% grade at 10 mph, throttle only, it lasts about 17 miles.

Three steps turn the tables into your own figure:

1. Pick your cruising speed and how hard you pedal in the first two tables.
2. Add 181 to 231 Wh for each 1,000 feet of 4 to 10% climbing at 10 mph on the throttle, or 162 to 210 Wh pedaling easily (the hills table).
3. Adjust for your weight and gear and the air temperature, then plan with 25% of the pack kept in reserve.

Every row is one steady ride, computed from Smartravel's specification table, Bafang's published figures for a comparable hub motor, drum-measured rolling resistance for knobby tires and a cycling-power model validated on an open road. The formula subsection works one ride through.

Does riding faster cut range? Miles at each speed

More than anything else you control: on the throttle, a full charge lasts about 108 miles at 10 mph and about 20 at 40 mph. The air's share of the work climbs with the cube of speed, so 40 mph asks (40 ÷ 20)³, eight times, the air power of 20 mph, and 64 miles at 20 mph shrink to 20.

Throttle only, flat pavement, a 180 lb rider, 77 °F air. The model holds the motor to Smartravel's 3,000 W nominal rating, enough for 42.2 mph on the flat; the published 50 mph in Sport uses the 6,500 W peak, so the 45 and 50 mph rows carry no steady figure. Its last column is the same ride with a quarter of the pack left unspent.

Light pedaling adds miles at trail and commuting speeds: 75 W from your legs at 15 mph lifts a full charge from 84 miles to 119. In these tables easy pedaling means 75 W and steady pedaling 150 W; with the motor switched off, 75 W would move the M23 at about 7.7 mph on the flat and 150 W at about 11.9 mph.

Full-charge miles on flat pavement with 180 lb aboard. At 15 mph easy pedaling spends 15.1 Wh a mile against 21.3 on the throttle. The 171- and 194-mile cells have your legs doing much of the work, so they lean hardest on the model's motor losses at light load (Limitations); "legs, nearly alone" marks the speed at which 150 W of pedaling leaves the motor almost nothing to add.

The seat sits well under the pedaling formula's height (the pedaling table), so on the M23 the 150 W column asks more of your legs than it would on a bike with a tall saddle; plan from the 75 W column.

Do pedals or gears save battery on a hub motor?

Your legs save battery; the gears only choose your cadence. The motor spins at the rear wheel's speed in every gear, so a shift changes how fast your feet turn and nothing about the motor's load. What moves the pack's draw at a given speed and grade is how much of the work you do:

Each cell is the pack's draw per mile with 180 lb aboard in 77 °F air; the three columns add 0, 75 and 150 W of the rider's own pedaling.

Take the steepest row: at 10 mph up 8%, easy pedaling cuts the draw from 106.7 Wh a mile to 89.0, and steady pedaling to 72.7. Every watt your legs supply is one the motor does not have to make, along with the heat the motor and the pack would have shed making it.

How much battery does a climb cost?

A lot: at 10 mph on the throttle, every 1,000 feet of 4 to 10% grade costs 181 to 231 Wh beyond the same distance on the flat, or 162 to 210 Wh with easy pedaling. With a 180 lb rider aboard, the M23 and its load weigh 297 lb, and lifting that 1,000 feet takes 112 Wh at the rear wheel; motor and pack losses make up the rest.

At 10 mph up 8%, each 1,000 feet of height costs the pack 214 Wh: spent on nothing but climbing, the full 1,800 Wh would raise rider and machine about 8,400 feet. The model gives nothing back for the descent, so a budget built from these rows has a margin in it.

180 lb aboard, throttle only. "Fastest steady" is the speed the modeled motor holds at its 3,000 W rating; the other two columns ride at 10 mph. Add 75 W of easy pedaling and those 10 mph miles become 79, 43, 28, 20, 15, 12 and 9, grade by grade from 2% to 15%.

Standing on the pedals on a dirt track, in Smartravel's photograph: on a grade most of the motor's watts go into lifting rider and machine.

For a hilly ride, price the flat miles and the climbing separately, then add them. Ten flat miles at 15 mph on the throttle take about 213 Wh and 1,000 feet of 8% climbing about 214, some 427 Wh together, under a third of the 1,350 Wh a 25% reserve leaves you to spend. On every grade in the table the modeled motor holds more than 15 mph, 25.6 mph even at 15%.

Does rider weight change the range?

On the flat you will barely notice it; on a climb you will. Extra weight loads the tires and the climb and leaves the air's share alone, so the gap between riders widens as the ground tips up.

The rider plus everything carried, with the M23's own 117 lb in every row because the motor moves it too. Throttle only. Smartravel's specification table sets the load limit at 265 lb, the last row.

Going from 180 lb to 265 lb trims a 15 mph ride on the flat from 84 miles to 75, and the 8% climb at 10 mph from 17 miles to 12. At the 265 lb limit, a flat ride at 15 mph still runs about 75 miles.

The bike's own weight is printed two ways. ZOONLAI's geometry block gives 152 lb against the specification table's 117; priced on the heavier figure, the 15 mph throttle ride comes to about 80 miles and the 8% climb to about 15.

How much range does cold weather take?

Each step colder takes more: the easy-pedaling 15 mph ride that covers 119 miles at 77 °F comes to about 91 miles at 32 °F and 82 at 14 °F.

Flat ground, 180 lb aboard. The center of each row follows McMaster University's measurements of LG's HG2 cell, reworked for a 0.5C discharge with the cells at the air's temperature; the lab's four temperatures were 77, 50, 32 and 14 °F, and every other row sits on a straight line between them. Brackets give the spread across other published cell data.

A bracket's floor is the lowest capacity Samsung's data sheets give at that temperature for a cell drained at one to four times its capacity per hour (25R and 30Q at 32 °F, 35E at 14 °F); its ceiling is the highest energy Casado and colleagues recorded in 2025 at a gentler rate.

Smartravel's table lists "96×21700 cells", so the middle line borrows an LG 18650 cell's data as a stand-in, and a 21700 cell of the pack's 5 Ah size lands inside the bracket: Samsung's INR21700-50E sheet gives 70% at 14 °F against 97% at 73 °F, or 72% of its warm figure.

Near freezing three losses stack up: the cells give back less, the air is about 9% denser under the U.S. Standard Atmosphere's gas law, and cold rubber rolls harder, which the model counts at 0.5% per °F below 77 °F, a rate between Rothhämel's measurement and Bicycle Rolling Resistance's road-tire average, stopped at 41 °F.

Knobby 70/100-19 tires and the riding position

On the flat the tire matters more than your posture, and the M23's tire is the model's biggest stand-in. No drum in the sources measures a 70/100-19 motorcycle-pattern knobby, so the central case takes the heaviest-rolling knobby casings Bicycle Rolling Resistance has measured, near 0.0126, and brackets them with the field average for 138 knobby tires coasted down by everyday riders in Tengattini and Bigazzi's study.

Full-charge miles, 180 lb aboard, flat ground. The top row is the field coast-down average for knobby tires, the bottom row that average plus one standard deviation, and the middle row, used everywhere else on this page, the drum's heaviest knobby casings: Kenda's Juggernaut Pro at 0.01262 and Schwalbe's Hans Dampf TrailStar at 0.01265, at 23 psi.

No drum has measured sand, loam or wet grass; email us the route and we will price that ride in the model.

Posture counts for more as speed rises. Drag area comes from Tengattini and Bigazzi: 0.640 m² for 37 upright cruiser riders, used here because the median rider sits at 0° of lean on this seat, and 0.603 m² for 90 everyday mountain-bike riders. The leaner figure would take the 20 mph throttle ride from 64 miles to 66.

Smartravel's 37 to 56 miles, and 65, matched to steady rides

Smartravel prints two range figures for the M23, and both fit a steady ride on the model. The specification table gives "37-56 mi (60-90 km)"; the spec strip gives "65 MILES Max Range", and the feature copy promises "Up to 65 miles per charge".

The table's band is read at its top, 56 miles. Per mile is the 1,800 Wh pack divided by the miles; each speed is where the model's flat ride with 180 lb aboard spends that much.

So the specification table's 56 miles fits a throttle ride near 22 mph on the flat, and its 37 miles one near 29.5 mph; the strip's 65 miles fits about 20 mph on the throttle, or 22 with easy pedaling.

Budget 75% of the row that matches your ride, and less on days of stops and starts, so a detour or a headwind never strands you: at 15 mph on the throttle that is 63 of the 84 miles, and at 20 mph 48 of 64.

How the range figures are computed

Holding an even speed in still air takes an even flow of power at the rear wheel, and the model Martin and colleagues validated on an open road in 1998 states that power in a single line:

Power at the rear wheel, P = v × [ m g (Crr cos θ + sin θ) + 0.5 ρ CdA v² ]

Here v is speed, m the combined mass of rider, cargo and machine, g gravity and θ the slope. Crr is the tires' rolling resistance, where 0.0126 means a drag of 1.26% of the load on the tires; ρ is air density, and CdA the drag area, the frontal bulk the air has to part. The first bracketed term covers tires and grade, the second the air, which grows with the cube of speed once multiplied by v.

Four steps link the wheel to the pack:

1. Pedaling reaches the rear wheel through a chain that passes on 97.7% of your effort, Martin and colleagues' figure; the motor supplies what is missing.
2. The hub motor is built into the rear wheel, so whatever gear you choose, it turns at the wheel's speed.
3. The motor's behavior comes from a comparable motor's published figures. Bafang's 2021 OEM workbook gives its RM G0H0 geared hub a no-load speed of 510 rpm, a rated speed of 426 rpm and an efficiency of "≥ 80" percent. The model keeps that shape, sets the no-load speed at Smartravel's 50 mph on the 24.4-inch wheel, runs it at the pack's 60 V and holds it to 3,000 W.
4. The pack loses part of its energy inside itself, at the rate Arango, Lopez and Ceren measured on a 48 V battery, scaled to the same share of capacity.

Divide the pack's draw by the speed for watt-hours per mile; the miles are then 1,800 Wh × the share of it the cells can still deliver at that temperature ÷ watt-hours per mile.

Worked through once: 180 lb aboard at 15 mph on the throttle, flat pavement, 77 °F. At the wheel that ride needs 111.9 W to roll the tires and 114.2 W to push the air, 226.1 W in all.

The 24.4-inch wheel is turning 207 times a minute. Written as a DC motor from Bafang's published figures, with 0.832 N·m of torque per amp, a 0.158 Ω winding and 2.64 A drawn at no load, the motor meets that demand with 10.4 N·m on 15.2 A. It runs at 73% efficiency there, well under its rated-point 80% because the load is light, and draws 310.2 W.

With the pack's internal losses added, the cells deliver 319.9 W, or 21.32 Wh for each mile at 15 mph; 1,800 ÷ 21.32 gives about 84.4 miles, or 63.3 with 25% kept.

Two published benchmarks recomputed, and a 3,000 W hub of the same class. Each half of the model reproduces the figure its source prints, and a real motor of the M23's rating checks where the model puts the top end:

Rows one and two come from the model's self-test, which re-runs Appendix I of Martin and colleagues' paper and the RM G0H0's rated point from Bafang's workbook. Row three takes QS Motor's listing of a 3,000 W hub rated "Max No-load RPM: 950RPM" at 72 V and runs it at 60 V on the M23's wheel.

The real motor goes faster than the model allows: RunPlayBack called out 52 mph on a full-throttle pull (the video), above the model's 50 mph no-load speed, so the fastest rows here sit under what the M23 reached. The model also caps the motor at its 3,000 W rating, so the 45 and 50 mph rows stay empty on purpose.

Brakes, lights, NFC and the app

Hydraulic disc brakes clamp 203 mm rotors at both ends. Smartravel's specification table lists "Hydraulic Disc Brakes Front and Rear 2-Piston Calipers 203mm Rotors", while the feature copy on the same page describes "a motorcycle-grade four-piston hydraulic disc brake system" on the same rotors; this review follows the table, and we will confirm the calipers on the unit you order.

The front caliper on its 203 mm rotor, behind the fork's orange guard.

The lighting comes fitted. Smartravel writes that its "Bright LED headlight and tail light ensure visibility day or night", and lists a rear brake light and "integrated turn signals". RunPlayBack's walk-around adds the switches for the lights and signals and a horn: "Pretty loud" (the video).

The LCD shows "speed, mileage, and power data at a glance", and the M23 unlocks by NFC card, which Smartravel pitches as "enhanced security and a more convenient riding experience". The reviewer called the card start "a nice security touch" (the written review).

Smartravel also lists "smart app control for power on/off, ride tracking, route history, and lighting control". Ask us which app pairs with the M23, and we will get its name and setup steps from Smartravel for you before you order.

Full suspension on 19-inch spoked wheels

Both ends are sprung: Smartravel's table lists "Full Suspension Front and Rear", with a KKE rear shock, and Smartravel says it "reinforced the front fork with durable steel pipe". RunPlayBack's walk-around shows a preload adjustment on the rear shock and a rebound adjustment on the fork (the video).

The rear shock between the frame and the swingarm, in Smartravel's side photograph.

On the road the reviewer found that "the bike suspension feels really good at speed" and that "It does turn pretty well"; the written review adds that "The bike tracked straight, didn't feel twitchy, and handling was better than I expected." Off the pavement the suspension "just went through that big pothole I didn't see and it didn't bottom out" (the video).

The wheels are motorcycle-sized: spoked "19 × 1.6 Alloy Rims" carrying "70/100-19 2.75 × 19 inches Tubed" tires. Tubed tires take a tube and a patch kit on the trail, and ZonMen-BK sells the suspension as spare parts, listed in the care section.

How the rear feels depends on what you weigh. Send us your weight and the ground you ride, and we will tell you where to start with the rear preload before your first ride.

117 pounds, a 265-pound limit, and the other figures

The M23 weighs 117 lb (53 kg) in Smartravel's specification table, with a "Max Load" of 265 lb (120 kg), and ZOONLAI's and ZonMen-BK's tables print the same two rows.

Other pages in the group print other figures, and this review plans on the lower load. ZOONLAI's geometry block and dimension drawing list a 152 lb "E-bike weight" and a 330 lb "Load capacity", and Smartravel's model chart on the Raptor ST202 page gives the M23 287 lb. We will get the figures for the unit you order from Smartravel in writing.

Count the 265 lb for yourself and everything you carry; the machine's own weight sits outside it. Say you weigh 220 lb and carry 30 lb of gear: that is 250 lb, 15 lb under the limit.

Size a garage spot, a trailer or a ramp for a machine 68.11 inches long on a 43.7-inch wheelbase, 44.88 inches tall and 30.7 inches across the bars, in ZonMen-BK's geometry table. The carton measures 59 by 11.8 by 32.7 inches.

Rain, parts and care

Treat the M23 as water-resistant and keep it out of deep water. The FAQ on its Smartravel page says the group's e-bikes "can handle light rain and wet roads" and asks riders to "avoid riding in heavy rain or submerging any components", so stream crossings and flooded trails are out.

The main parts are listed by the maker. ZonMen-BK's store carried these M23 parts on September 27, 2026:

Prices as listed on ZonMen-BK's store that day. A part that fails under warranty on a machine bought from us comes through us at no cost to you (buying it from us).

Keep the pack from sitting empty. The M23's FAQ points riders to Smartravel's lithium battery guide for what it calls "starvation": a pack that will not take a charge after sitting discharged too long. Charge it before you store the M23, and top it up during a long lay-up.

The Mercer fit test

The Mercers are the fictional family of seven, aged 12 to 63, we put in front of every machine we review, so each one answers the same fit questions (meet the Mercers).

Each verdict rests on a published figure (Smartravel's 5'4" to 6'5" rider window, the seat heights, the 265 lb limit, and the line "to suit most adults" on ZOONLAI's geometry block) or on the model's row for that height in the stop table.

The seat sits under the pedaling formula's height for every adult in the family, as the pedaling table shows for the median rider at every height, so each adult row reads the stop.

Jack and Ruth show where the M23 divides a household. Jack, at 6'1", finds flat ground under both feet on 92 of 100 bodies his height; Ruth, at 5'5", reaches it on none of 100 from the padded top, though Smartravel's 5'4" to 6'5" window takes in both of them.

Is it UL certified?

On its M23 page Smartravel shows a badge titled "UL Certified" with the line "Safety Certified in Accordance with UL 2849". Lower down, the page's row of store promises adds "TUV Certified" and "In accordance with UL 2849", and ZOONLAI's M23 listing shows the same badge.

If a landlord, a storage facility or an insurer asks for the certificate, email us: we will request it from Smartravel in writing, naming the model, and forward what comes back.

Has it been recalled?

No. On September 27, 2026, a search of the Consumer Product Safety Commission's recall database under Smartravel, Smart Travel, Smartravelor, ZOONLAI and ZonMen, in the recall title, the product name and the manufacturer field, returned no recall, and none of 623 bicycle, e-bike, battery and scooter records carries the brand or the M23 model code.

The search was proved on names with known recalls before its silence was trusted: the same database returned 1 recall for Ancheer, 54 for Specialized and 24 for Trek.

The class question: 3,000 W nominal, 50 mph published

Where the M23 may be ridden turns on two published numbers: a motor rated 3,000 W nominal and 6,500 W peak, and 50 mph in Sport. Smartravel's specification table gives both.

The federal line comes first, and 15 U.S.C. § 2085(b) draws it in these words:

For the purpose of this section, the term "low-speed electric bicycle" means a two- or three-wheeled vehicle with fully operable pedals and an electric motor of less than 750 watts (1 h.p.), whose maximum speed on a paved level surface, when powered solely by such a motor while ridden by an operator who weighs 170 pounds, is less than 20 mph.

California's code shows how one state sets its own lines. Vehicle Code § 312.5(a), read September 27, 2026, defines an electric bicycle by "an electric motor that does not exceed 750 watts of power"; the moped definition in § 406(a) asks for a motor of "less than 4 gross brake horsepower" and a top speed "of not more than 30 miles per hour on level ground".

Sources: the three texts and Smartravel's M23 page, read September 27, 2026. At 745.7 W per horsepower, the 3,000 W rating comes to 4.0 hp and the 6,500 W peak to 8.7 hp.

As published, the M23 sits above the e-bike line in both texts, and its 50 mph in Sport sits above California's moped speed line. Eco holds the top speed to 28 mph, while the specification table gives the motor one rating, 3,000 W nominal, for both modes; how a state treats a machine with a switchable mode is that state's decision.

Which vehicle the M23 counts as on a public road, and what that asks of you, is set by your state's vehicle code: our 50-state e-bike law atlas prints every state's definitions, and our electric dirt bike guide answers the street question for all 51 jurisdictions in one table.

Where you can ride it

Private land with the owner's say-so, and off-highway areas the managing agency designates for motor vehicles. Federal agencies write their e-bike rules around a 750-watt motor: the Bureau of Land Management's definitions cover machines with "an electric motor of not more than 750 watts (1 h.p.)", a line the M23's rating sits well above.

On National Forest land, e-bikes of every class are motor vehicles: the Forest Service's final directives of March 31, 2022, recorded in its notice at 87 FR 41278, manage "all classes of e-bikes as motor vehicles". Where a district has published a motor vehicle use map, 36 CFR 261.13 forbids riding a motor vehicle "other than in accordance with those designations".

The land manager's rule governs each row; the M23's specification sheet settles none of them by itself.

Riding a National Forest route outside those designations exposes you to 36 CFR 261.1b, which sets "imprisonment of not more than six months" or a fine under 18 U.S.C. 3571, or both. Our 3000W e-bike guide walks through federal land, National Forests, state off-highway land and private land for machines of this rating, and our public-land e-bike guide takes the agencies one at a time.

Green flags / Red flags

Green flags

• A removable 1,800 Wh pack, good for about 84 computed miles at 15 mph on the throttle with 180 lb aboard, or 119 with easy pedaling.
• 3,000 W nominal and 6,500 W peak with 200 N·m, and a throttle RunPlayBack called "really smooth" on a machine that ran past 50 mph.
• Full suspension with a preload adjustment at the rear and a rebound adjustment at the front, on spoked 19-inch wheels.
• Hydraulic disc brakes on 203 mm rotors at both ends, with turn signals, a brake light, a horn and NFC unlock.
• Holds 25.6 mph on a 15% grade on its 3,000 W rating in the model.
• Upright and light on the wrists: 5 to 6% of body weight on the grips for the median rider at every height.
• Flat feet for tall riders: 75 of 100 at 6'0" and 92 of 100 at 6'1" on the padded top.
• A clean federal recall record: no CPSC recall names Smartravel, ZOONLAI, ZonMen or the M23.
• Parts listed by the maker: battery, rear shock, fork, display and headlight on ZonMen-BK's store.
• $1,249.99, delivered free to the lower 48.

Red flags

These are about fit: who the M23 is wrong for, and where to go instead.

• Wrong if your rides are on public roads under e-bike rules. Its 3,000 W and 50 mph sit above the lines in the class section; tell us your state and we will point you to a bike of ours rated inside its e-bike definition.
• Wrong for riders under about 5'10" who need both feet flat at every stop. On the padded top only 5 of 100 riders at 5'8" do; our Raptor ST202 review covers a Smartravel with a 33-inch bench, where 37 of 100 riders at 5'8" sit flat-footed.
• Wrong for long rides with your legs doing the work. The seat sits 8 to 15 inches under the pedaling formula's height; tell us your inseam and we will point you to a bike of ours with a seat post that rises. On a city bike with a post like that, our ZOONLAI UrbanX review sets out the formula's saddle height for your inseam.
• Wrong for a rider and gear over 265 lb. Our Raptor ST202 Pro review covers a Smartravel rated for 350 lb of rider and cargo.
• Wrong for a machine you lift or carry upstairs. At 117 lb it wants a ground-level home; our Smartravel DK400 review covers the lightest moped-style Smartravel we sell, at 68.3 lb.
• Wrong if your trail days need more pack. Our Riding'times GT73 Pro review covers an electric dirt bike with 2,160 Wh on board.
• Not for riders under 18. ZOONLAI sizes the M23 "to suit most adults", and our 50-state law atlas sets out each state's age rules for younger riders.

Buy it if / Buy something else if

Buy it if you want an electric dirt bike with a 3,000 W nominal hub, 1,800 Wh on board and suspension at both ends for private land and off-highway areas that allow motor vehicles, you stand about 5'11" or taller for flat feet at a stop, and you ride mostly on the throttle.

For $1,249.99 you get a 6,500 W peak motor, 200 N·m, hydraulic disc brakes on 203 mm rotors, NFC unlock and a Shimano 7-speed. On Shop Pay the M23 comes to $112.82 a month for 12 months at 15% APR, $1,353.84 in all, or $217.54 a month over 6 months, each subject to an eligibility check by Affirm's lending partners.

RunPlayBack's verdict opens on the speed: "It's fast—faster than I expected—and it delivers that speed with a smoothness that makes the whole bike feel more mature than a lot of the 'budget electric dirt bike' category" (the written review).

Buy something else if you want to ride roads under your state's e-bike rules (tell us your state and we will match a bike of ours), you weigh with your gear over 265 lb (our Raptor ST202 Pro review), or you want a lower seat for flat feet at every stop (our Raptor ST202 review). Our e-bike reviews hub lines up the machines we have reviewed by weight, load rating, price and warranty.

Before you buy: the checklist

Ten checks before you spend $1,249.99; the first three decide whether the M23 has somewhere to be ridden.

1. Name the ground you will ride: private land, or an off-highway area whose manager admits motor vehicles.
2. Read your state's definitions in our law atlas before any ride on a public road.
3. Check the rider's age: ZOONLAI sizes the M23 for adults.
4. Take your inseam to the stop table: under about 5'10", your stops will be on tiptoe from the padded top.
5. Check your height against the windows: 5'4" to 6'5" on Smartravel's table.
6. Add up yourself and your gear and keep the total at or under 265 lb.
7. Plan the parking and the loading for a 117 lb machine 68.11 inches long.
8. Look up your speed in the range tables, plan on 75% of the row, and add the climbing on top.
9. Pick a dry indoor spot to charge, and allow a night from empty on the 3.5 A charger.
10. Get a helmet and gear for the speeds you plan to ride.

Buying it from us

Why buy the M23 from Redtail

Our listing priced the M23 at $1,249.99 on September 27, 2026, against a $2,899.99 regular price, the same pair Smartravel's own US store showed; ZOONLAI's and ZonMen-BK's stores listed it at $1,349.99 that day. ZonMen-BK's warranty terms send anyone who bought elsewhere to "contact the original seller for after-sales service", and bought from us, that seller is Redtail.

Returns for a change of mind run on separate terms: the machine must still be sealed in its factory packaging and the return requested within 72 hours of delivery, with a 15% restocking fee and the return shipping, and a canceled order carries a 3% transaction fee. Settle the fit, the range and where you will ride with us first, and the order goes in decided.

Frequently asked questions

How far can the Smartravel M23 go on one charge?

Smartravel's table gives 37 to 56 miles and its spec strip 65. Computed for a 180 lb rider on flat pavement, a full charge covers about 84 miles at 15 mph on the throttle, 64 at 20 mph, 40 at 28 and 119 at 15 mph with easy pedaling; plan on three quarters of your row (the range tables).

How fast does the M23 go?

Smartravel publishes 28 mph in Eco and 50 mph in Sport from a motor rated 3,000 W nominal and 6,500 W peak, and RunPlayBack called out 52 mph on a full-throttle pull. Held to its 3,000 W rating, the range model tops out at 42.2 mph on the flat (the motor section).

Is the M23 street legal?

Your state's vehicle code decides. The federal definition asks for fully operable pedals, a motor under 750 W and under 20 mph on the motor alone; the M23 has the pedals, and its published 3,000 W and 50 mph sit above the other two lines, and above California's 30 mph moped line as well (the class section).

Why does the M23 have pedals, and can you pedal it?

The pedals drive a Shimano 7-speed, and a magnetic sensor on the crank brings the motor in as they turn, which is how Smartravel's page describes its pedal assist. You can pedal it, with the knee well bent: the fixed seat sits 8.0 to 15.4 inches under the formula's saddle height for median riders from 5'4" to 6'4" (the pedaling table).

Do I need a license to ride the M23?

That depends on your state and on where you ride. On a public road your state's vehicle code decides what a machine rated 3,000 W that reaches 50 mph needs; on private land or in an off-highway area, the owner or the managing agency sets the terms (our law atlas; where to ride it).

How long does the M23 take to charge?

Smartravel gives 4 to 6 hours on the included 67.2 V 3.5 A charger. From empty, 30 Ah at 3.5 A is 8.6 hours of full charging current, so plan on a night; a 4-to-6-hour charge puts back 14 to 21 Ah (the battery section).

What battery does the M23 use?

60 V 30 Ah, 1,800 Wh, built from "96×21700 cells" in one pack that lifts out once its lid is unlocked. ZonMen-BK lists a spare M23 battery pack at $699.99 (the battery section).

How much does the M23 weigh?

117 lb (53 kg) in Smartravel's specification table; ZOONLAI's geometry block prints 152 lb. Plan the parking and any loading around that weight plus your gear, and keep rider and gear at or under 265 lb (the weight section).

What are the M23's dimensions and seat height?

ZOONLAI's and ZonMen-BK's geometry tables give a 68.11-inch length, a 43.7-inch wheelbase, a 44.88-inch height and a 33.07-inch seat to its front edge; the padded top measures 34.26 inches. At 5'11", 53 of 100 riders sit flat-footed on that top, and the pedaling formula would put a 5'8" rider's saddle, on a 32.6-inch inseam, at 44.4 inches (the fit section).

Does the M23 have gears?

Yes: a Shimano 7-speed on the pedal drive. The hub motor turns at the rear wheel's speed in every gear, so the gears set your cadence and your legs, not the gear, save the battery (the gear table).

Do I need to assemble the M23?

Some. Owners on ZonMen-BK's page describe a machine that "arrived mostly assembled", one build of "about 30 mins" and one "in just over an hour" with the included tools. The pedals, battery, charger and keys come in a second parcel (setup).

Can I ride the M23 in the rain?

Light rain, yes. The M23's FAQ calls the group's e-bikes water-resistant, able to "handle light rain and wet roads", and asks riders to "avoid riding in heavy rain or submerging any components" (rain, parts and care).

Where can I get parts for the M23?

ZonMen-BK lists the main M23 parts: the battery pack at $699.99, the rear shock at $129.99, the front fork at $110.00, the display at $79.99 and the headlight at $49.99, as read September 27, 2026. Under warranty, a part for a machine bought from us comes through us (the parts table).

Is the M23 good for tall riders?

It suits tall riders well at a stop. On the padded top, 75 of 100 riders at 6'0" and 92 of 100 at 6'1" set both feet flat, and Smartravel's window runs to 6'5"; the grips put the median rider upright at every height (the fit section).

Is the Smartravel M23 worth it?

At $1,249.99 on our store on September 27, 2026, with free shipping to the contiguous United States, it puts a 3,000 W nominal hub, 1,800 Wh, full suspension and hydraulic brakes on 203 mm rotors on one frame. It fits an adult who rides on the throttle on private land and designated off-highway areas (the verdict).

What do owners and reviewers say about the M23?

RunPlayBack, whose review Smartravel's page carries, found the throttle tuning "really smooth", and at 51 mph the M23 "feels really stable on the road". Six owner reviews sat on ZonMen-BK's page on September 27, 2026, dated May 2026, and one sums it up as "Great bike for the price. Great suspension."

Is the M23 UL certified?

Smartravel's M23 page states that it is "Safety Certified in Accordance with UL 2849". If you need the certificate itself, we will request it from Smartravel in writing (the UL section).

Can I finance the M23?

Yes. Shop Pay, read September 27, 2026, offered 12 payments of $112.82 at 15% APR ($1,353.84 in total), 6 of $217.54 or 3 of $427.12, each subject to an eligibility check by Affirm's lending partners.

What warranty does the M23 have?

Smartravel's page shows a "12 Months Warranty" badge, and ZonMen-BK's policy sets 12 months for the frame, the motor, the controller, the charger, the display and the battery pack. Bought from us, the claim comes to us: photos or a video of the fault and your order number are enough (buying it from us).

Limitations of this review

Twenty-one things this review cannot settle, listed so you can weigh them.

1. We sell this machine. Weigh the red flags as closely as the green.
2. This is a specification-verified review. Its figures come from the three stores' M23 pages, our own store record, statutes, named reviewers' and owners' own words, the published research the range and fit sections cite, or arithmetic on this page.
3. Each range figure is one steady ride: a single speed on a single grade, no wind, no stops. Stops, starts and headwinds cost more; a tailwind costs less.
4. No ride to an empty battery with its speed, load and terrain stated turned up in the sources read, so the range model is checked against the published physics, the comparable motor's rated point and a 3,000 W hub of the same class, and not against a measured M23 charge.
5. Bafang's figures stand in for the M23's motor. Smartravel gives 3,000 W nominal, 6,500 W peak and 200 N·m; the model uses Bafang's published shape with its no-load speed set at Smartravel's 50 mph. At 82% efficiency in place of Bafang's 80% floor, the 15 mph throttle figure moves from 84 miles to 95; with the motor rated at 6,500 W, to 74.
6. The model holds the motor to 3,000 W and sets its no-load speed at 50 mph, so it prints no steady figure at 45 or 50 mph and puts the flat top at 42.2 mph, under the 52 mph RunPlayBack called out. It does not model the controller's current limit ("80A / 260A" in Smartravel's table), which would show first in the fastest-steady column on the steepest grades.
7. Light-load motor losses are modeled, not measured. The physics reproduces Martin and colleagues' worked example and the motor reproduces Bafang's 80% at the rated point; the 171- and 194-mile cells lean most on the model's losses at light load.
8. The documents read here do not say how much of the pack the battery management releases. On one measured pedelec, researchers at KIT found 75% used in a standard range test, and the planning column keeps that 25% back.
9. The tire coefficient is a stand-in. No drum measurement of a 70/100-19 knobby was found, so the model uses the heaviest knobby casings Bicycle Rolling Resistance has measured, bracketed by a field average for 138 knobby tires.
10. The cold figures rest on one cell's laboratory data. Smartravel names no cell maker, so the central line uses McMaster University's LG HG2, an 18650, bracketed by other published cell data, with a 21700 cell of the pack's size as a check and the cells assumed to be at air temperature.
11. The charge time is arithmetic on the charger's rating. Smartravel's table quotes 4 to 6 hours and a ZOONLAI gallery banner "Full Charge in 4.5-5.5H"; 30 Ah at 3.5 A is 8.6 hours of full current, and a charger's current tapers near full.
12. The frame is measured on Smartravel's side photograph of the M23, scaled by the 43.7-inch wheelbase and checked against five published figures within 2.4%. The geometry tables' 44.88-inch total height is drawn to the handlebar, and the near bar end measures taller than that on the photograph.
13. The seat's two heights are both printed. The stores' 33.07 inches runs to the seat's front edge, and the 34.26 inches of the padded top is measured on the photograph; the stop table gives both.
14. Where the group's pages print different figures, this review follows Smartravel's specification table and plans on the lower load: 117 lb and 265 lb against ZOONLAI's 152 lb and 330 lb, with 287 lb on Smartravel's model chart; 5'4" to 6'5" against ZOONLAI's 5'3" to 6'3" and its slider's 5'0" to 6'7"; 37 to 56 miles against the spec strip's 65; "2-Piston Calipers" against the feature copy's "four-piston"; and 200 N·m against a ZOONLAI gallery banner's "Max Torque 150 N·m".
15. The frame material is printed two ways. The specification tables say "Premium Aluminum Alloy"; ZonMen-BK's introduction says "a durable carbon steel frame". This review follows the tables, and we will confirm it for the unit you order.
16. The top speed is printed three ways. The specification table gives 28 mph in Eco and 50 mph in Sport, and Smartravel's model chart on the Raptor ST202 page adds "65+ mph (Race)" for the M23; this review follows the table.
17. The group's documents state more than one warranty term: 12 months on the page's badge and in ZonMen-BK's component table, "a 2-year warranty for each ebike" in Smartravel's help block, and "a 1-year limited warranty on the frame" in the M23's FAQ, while the badge's own text says the warranty "does not include free accessories and batteries". This review states 12 months, as our listing does.
18. The fit figures use the US Army's ANSUR II bodies: 6,068 soldiers aged 17 to 58, measured in 2010 to 2012, who are not the US public, so your own inseam decides your row.
19. The cockpit is the one in Smartravel's side photograph, the grip read from an outline seen end-on and bracketed across it; the lean and hand tables seat the rider on the seat's front flat.
20. The hand figure is a ceiling with a relaxed back. On a real ride your back and arms carry part of it, and the 109% formula is a starting point the knee range and the heel check refine.
21. Reviewers' and owners' words are theirs. Speeds, build times and impressions were taken on their own units and ground; the price and stock were read on September 27, 2026 and can change, and the recall search covers the CPSC's US database under the names listed.

The bottom line

For $1,249.99, the M23 puts a rear hub motor rated 3,000 W nominal and 6,500 W peak and a 1,800 Wh pack on a dirt-bike frame, with full suspension, hydraulic disc brakes on 203 mm rotors, 70/100-19 knobby tires, NFC unlock, turn signals and a Shimano 7-speed on the pedals.

Plan on about 84 miles of flat riding at 15 mph on the throttle for a 180 lb rider, or 119 if you pedal easily as you go. Every 1,000 feet of climbing at 10 mph costs another 181 to 231 Wh on the throttle, and stop-and-go days cost more again; keeping a quarter of the pack back covers both.

It suits adults who ride on the throttle, tall riders most of all at the stops, with a ground-level home for a 117 lb machine. Paid through Shop Pay, the $1,249.99 splits into 12 monthly payments of $112.82 at 15% APR for buyers who pass the eligibility check. Our Smartravel brand profile sets the M23 beside the five other Smartravels we sell.

Settle where it will be ridden before you pay: Smartravel rates the motor at 3,000 W nominal and publishes 50 mph, above the e-bike definitions quoted here, so its ground is private land and designated off-highway areas. Tell us the trails and land you have in mind, and we will lay out what the rules there ask of the M23.

Source register

Each document this review relies on, and what it supports.

T1 is the record itself, read from the party that issued it: a statute, a federal regulation or notice, the maker group's own product pages, records and policies, and our own store record.

T2 is a party's own publication about its product or its measurements: the motor makers' and cell makers' published figures, the research groups' and laboratories' measurements, and the reviewers' and owners' recorded words.

Expiry conditions

Re-read this page if Smartravel changes the M23's price, pack, motor ratings, speeds, range figures, weight, load limit or rider window on its US page; if ZOONLAI or ZonMen-BK change their tables; if Smartravel confirms in writing the weight, load, frame material or warranty for the unit shipped; or if the price or the Shop Pay terms change on our store.

Re-read it as well if a recall is published naming Smartravel, ZOONLAI, ZonMen or the M23, or if any statute quoted here is amended. Verified September 27, 2026.

References

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

1. Smartravel, Smartravel 6500W Electric Dirt Bike M23 — product page (spec strip, feature copy, Spec&Size table, FAQs~M23, customer reviews, trust badges, as rendered under the US market). Retrieved September 27, 2026. https://www.smartravelor.com/products/zonmen-6500w-electric-dirt-bike-m23
2. Smartravel, M23 — product record, price and compare-at price, SKU M23, creation date. Retrieved September 27, 2026. https://www.smartravelor.com/products/zonmen-6500w-electric-dirt-bike-m23.json
3. ZOONLAI, ZonMen 6500W Electric Dirt Bike M23 — product page (geometry block, dimension drawing, size slider, specification table, FAQs, UL badge). Retrieved September 27, 2026. https://www.zoonlai.com/products/zonmen-6500w-electric-dirt-bike-m23
4. ZOONLAI, Zoonlaibike Official Store — home page (the statement that Zoonlai and Smartravel are part of the same company). Retrieved September 26, 2026. https://www.zoonlai.com/
5. ZonMen-BK, ZonMen 6500W Electric Dirt Bike M23 — product page (geometry table, specification table, FAQs, customer reviews). Retrieved September 27, 2026, the six owner reviews read whole through Judge.me's widget the same day. https://zonmen-bk.com/products/zonmen-6500w-electric-dirt-bike-m23
6. ZonMen-BK, M23 — product record, price, compare-at price and creation date. Retrieved September 27, 2026. https://zonmen-bk.com/products/zonmen-6500w-electric-dirt-bike-m23.json
7. ZonMen-BK, WARRANTY POLICY & AFTER-SALES TERMS (the component table, the claims process, the dealer route). Retrieved September 27, 2026. https://zonmen-bk.com/pages/warranty-policy-after-sales-terms
8. ZonMen-BK, M23 Battery Pack, M23 Rear Shock Absorber, M23 Front Fork, M23 Display / Instrument Cluster and M23 Front Headlight — product records. Retrieved September 27, 2026. https://zonmen-bk.com/products/m23-battery-pack
9. Smartravel, Smartravel Raptor ST202 GPS-Enabled All-Terrain Electric Bike — product page, model-comparison chart (the M23 column). Retrieved September 26, 2026. https://www.smartravelor.com/products/smartravel-gps-electric-bike-for-adults-ebike-with-real-time-positioning-and-app-control-1200w-48v-20ah-up-to-32-mph-simano7-speed-fat-tire-electric-bicycle
10. United States Patent and Trademark Office, SMARTRAVEL, Registration No. 7,533,630 (Serial No. 98201852), status record. Retrieved September 26, 2026. https://tsdr.uspto.gov/statusview/sn98201852
11. United States Patent and Trademark Office, ZONMEN-BK, Registration No. 7,557,204 (Serial No. 98309421), status record. Retrieved September 26, 2026. https://tsdr.uspto.gov/statusview/sn98309421
12. RunPlayBack (Sully), ZonMen M23 Review: A 50+ MPH Electric Dirt Bike That's Smoother Than It Has Any Right to Be, published July 10, 2026 (UTC). Retrieved September 27, 2026. https://runplayback.com/articles/zonmen-m23-review-n4J_gMPmRaQ
13. RunPlayBack, Riding the ZonMen M23: 50+ MPH Off-Road Electric Dirt Bike!, YouTube, July 9, 2026 (speeds called out, walk-around, suspension, brakes, NFC). Retrieved September 27, 2026. https://www.youtube.com/watch?v=n4J_gMPmRaQ
14. US Government Publishing Office, 15 U.S.C. § 2085 — Low-speed electric bicycles, subsection (b). Retrieved September 26, 2026. https://www.govinfo.gov/content/pkg/USCODE-2024-title15/html/USCODE-2024-title15-chap47-sec2085.htm
15. California Legislative Information, California Vehicle Code § 312.5, subdivision (a). Retrieved September 26, 2026. https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=VEH&sectionNum=312.5.
16. California Legislative Information, California Vehicle Code § 406, subdivision (a) (amended by Stats. 2015, Ch. 568). Retrieved September 26, 2026. https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=VEH&sectionNum=406.
17. Bureau of Land Management, 43 CFR § 8340.0-5, paragraphs (a)(5) and (j) (85 FR 69223, Nov. 2, 2020). Retrieved September 26, 2026. https://www.ecfr.gov/current/title-43/subtitle-B/chapter-II/subchapter-H/part-8340
18. Forest Service, US Department of Agriculture, 36 CFR § 261.13 — Motor vehicle use. Retrieved September 26, 2026. https://www.ecfr.gov/current/title-36/chapter-II/subchapter-B/part-261/subpart-A/section-261.13
19. Forest Service, US Department of Agriculture, 36 CFR § 261.1b — Penalty (89 FR 92815, Nov. 25, 2024). Retrieved September 26, 2026. https://www.ecfr.gov/current/title-36/chapter-II/subchapter-B/part-261/subpart-A/section-261.1b
20. US Forest Service, Directive Publication Notice, 87 FR 41278 (July 12, 2022), recording the final e-bike directives issued March 31, 2022. Retrieved September 26, 2026. https://www.federalregister.gov/documents/2022/07/12/2022-14777/directive-publication-notice
21. US Consumer Product Safety Commission, Recall database, recall title, product name and manufacturer queries for Smartravel, Smart Travel, Smartravelor, ZOONLAI and ZonMen, a model-code read of a 623-record corpus, and controls Ancheer / Specialized / Trek. Retrieved September 27, 2026. https://www.saferproducts.gov/
22. Redtail eBikes, Shipping policy. Retrieved September 27, 2026. https://redtailebikes.com/policies/shipping-policy
23. Redtail eBikes, Refund policy (48-hour damage window, change-of-mind and cancellation terms). Retrieved September 27, 2026. https://redtailebikes.com/policies/refund-policy
24. Redtail eBikes, Smartravel M23 storefront record and Shop Pay terms (price, compare-at price, availability, the two parcels, warranty and repair terms, installment plans). Retrieved September 27, 2026. https://redtailebikes.com/products/zonmen-6500w-electric-dirt-bike-m23
25. Affirm, Affirm's lending partners (the lenders behind Shop Pay Installments). Retrieved September 26, 2026. https://www.affirm.com/lenders
26. BAFANG, Workbook OEM 2021, MOTORS table, RM G0H0 column: n0, nT, efficiency and maximum torque at 48 V. Retrieved September 23, 2026. https://www.bafang-e.com/Uploaded/Labels/BAFANG%20Workbook%20OEM%202021.pdf
27. QS Motor, QS205 Spoke Hub Motor 3000W (50H) V3 Type — product page (rated power, rated voltage, maximum no-load speed, maximum torque). Retrieved September 27, 2026. http://www.qs-motor.com/product/3000w-spoke-hub-motor50h-v3-type-for-electric-motorcycle/
28. Martin, J. C., Milliken, D. L., Cobb, J. E., McFadden, K. L. and Coggan, A. R., Validation of a Mathematical Model for Road Cycling Power, Journal of Applied Biomechanics 14(3):276–291 (1998), Eq. 14 and Appendix I; doi 10.1123/jab.14.3.276. Retrieved September 23, 2026. https://collections.lib.utah.edu/dl_files/b4/8e/b48ef26086091662c561e673d7bd990d77868437.pdf
29. Bierman, J., Kenda Juggernaut Pro 2016, BicycleRollingResistance.com, rolling-resistance results. Retrieved September 25, 2026. https://www.bicyclerollingresistance.com/fat-bike-reviews/kenda-juggernaut-pro-2016
30. Bierman, J., Schwalbe Hans Dampf TrailStar 2017, BicycleRollingResistance.com, rolling-resistance results ("CRR: 0.01265" at 23 psi). Retrieved September 23, 2026. https://www.bicyclerollingresistance.com/mtb-reviews/schwalbe-hans-dampf-trailstar-2017
31. Bierman, J., CRR at Different Temperatures: Examining Temperature Dependence of Rolling Resistance, BicycleRollingResistance.com. Retrieved September 23, 2026. https://www.bicyclerollingresistance.com/specials/crr-temperature-test
32. Rothhämel, M., On rolling resistance of bicycle tyres with ambient temperature in focus, International Journal of Vehicle Systems Modelling and Testing 17:67–80 (2023); doi 10.1504/IJVSMT.2023.132317. Retrieved September 23, 2026. https://www.inderscience.com/filter.php?aid=132317
33. Tengattini, S. and Bigazzi, A. Y., Physical characteristics and resistance parameters of typical urban cyclists, Journal of Sports Sciences 36(20):2383–2391 (2018), Table 4; doi 10.1080/02640414.2018.1458587. Retrieved September 23, 2026. https://civil-reactlab.sites.olt.ubc.ca/files/2022/11/Tengattini_2018_Physical-characteristics-and-resistance-parameters-of-typical-urban-cyclists.pdf
34. Arango, I., Lopez, C. and Ceren, A., Improving the Autonomy of a Mid-Drive Motor Electric Bicycle Based on System Efficiency Maps and Its Performance, World Electric Vehicle Journal 12(2):59 (2021), Eq. (40); doi 10.3390/wevj12020059. Retrieved September 23, 2026. https://mdpi-res.com/d_attachment/wevj/wevj-12-00059/article_deploy/wevj-12-00059.pdf
35. Schmitt, M., Decker, S. and Doppelbauer, M., Measuring and Characterization of a Pedal Electric Cycle (Pedelec) on a Full System Test-Bench with Full Range Emulation of a Cyclist, EPE'19 ECCE Europe (IEEE, 2019); doi 10.23919/EPE.2019.8915567. Retrieved September 23, 2026. https://publikationen.bibliothek.kit.edu/1000100371/50695920
36. Kollmeyer, P. et al., LG 18650HG2 Li-ion Battery Data, Mendeley Data v2, McMaster University; doi 10.17632/b5mj79w5w9.2 (0.5C discharge files, recomputed). Retrieved September 23, 2026. https://doi.org/10.17632/b5mj79w5w9.2
37. Samsung SDI, Specification of Product INR18650-25R, § 7.6 Temperature dependence of discharge capacity. Retrieved September 23, 2026. https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/4628.130109_5F00_INR18650_2D00_25R-Cell-SPEC-_2800_3_2900_-_2800_1_2900_.pdf
38. Samsung SDI, Specification of Product INR18650-30Q, § 7.6 Temperature dependence of discharge capacity. Retrieved September 23, 2026. https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/INR18650_2D00_30Q_5F00_datasheet.PDF
39. Samsung SDI, Specification of Product INR18650-35E, § 7.5 Temperature Dependence of Discharge Capacity. Retrieved September 23, 2026. https://enerpower.de/wp/wp-content/uploads/2016/03/Technical_Information_INR18650-35E.pdf
40. Samsung SDI, Specification of Product INR21700-50E, Version 1.0, § 3.3 Charging Voltage and § 7.5 Temperature Dependence of Discharge Capacity. Retrieved September 27, 2026. https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/196/INR21700_2D00_50E-Cell-Specification_5F00_V1.0_5F00_180711.pdf
41. Casado, S. et al., Evaluation of commercial Li-Ion 18650 battery cells for deep space applications, Journal of Power Sources 638:236552 (2025), Table 3; doi 10.1016/j.jpowsour.2025.236552. Retrieved September 23, 2026. https://doi.org/10.1016/j.jpowsour.2025.236552
42. NOAA, NASA and US Air Force, U.S. Standard Atmosphere, 1976 (NOAA-S/T 76-1562), sea-level pressure and the gas constant for dry air. Retrieved September 23, 2026. https://ntrs.nasa.gov/api/citations/19770009539/downloads/19770009539.pdf
43. U.S. Army Natick Soldier Research, Development and Engineering Center, 2012 Anthropometric Survey of U.S. Army Personnel (ANSUR II), public data release (4,082 men, 1,986 women). Retrieved September 25, 2026. https://www.army.mil/article/188601/for_good_measure_natick_releases_raw_data_from_army_wide_anthropometric_survey
44. Peveler, W., Bishop, P., Smith, J., Richardson, M. and Whitehorn, E., Comparing Methods for Setting Saddle Height in Trained Cyclists, Journal of Exercise Physiology Online 8(1):51–55 (2005), Methods and Results. Retrieved September 25, 2026. https://www.asep.org/asep/asep/JEPonlineFEBRUARY2005_PevelerSaddle.doc
45. Peveler, W. W., Pounders, J. D. and Bishop, P. A., Effects of saddle height on anaerobic power production in cycling, Journal of Strength and Conditioning Research 21(4):1023–1027 (2007); doi 10.1519/R-20316.1. Retrieved September 25, 2026. https://pubmed.ncbi.nlm.nih.gov/18076230/
46. Ferrer-Roca, V., Roig, A., Galilea, P. and García-López, J., Influence of saddle height on lower limb kinematics in well-trained cyclists: static vs. dynamic evaluation in bike fitting, Journal of Strength and Conditioning Research 26(11):3025–3029 (2012); doi 10.1519/JSC.0b013e318245c09d. Retrieved September 25, 2026. https://pubmed.ncbi.nlm.nih.gov/22190163/
47. Priego Quesada, J. I., Pérez-Soriano, P., Lucas-Cuevas, A. G., Salvador Palmer, R. and Cibrián Ortiz de Anda, R. M., Effect of bike-fit in the perception of comfort, fatigue and pain, Journal of Sports Sciences 35(14):1459–1465 (2017). Retrieved September 25, 2026. https://pubmed.ncbi.nlm.nih.gov/27490817/
48. Slane, J., Timmerman, M., Ploeg, H. L. and Thelen, D. G., The influence of glove and hand position on pressure over the ulnar nerve during cycling, Clinical Biomechanics 26(6):642–648 (2011). Retrieved September 25, 2026. https://pubmed.ncbi.nlm.nih.gov/21458120/
49. Carahalios, A., An Analysis of the Bicycle-Rider Interface Forces in Stationary Road Cycling, MS thesis, University of Colorado (2015). Retrieved September 25, 2026. https://scholar.colorado.edu/downloads/70795789x
50. Clauser, C. E., McConville, J. T. and Young, J. W., Weight, Volume, and Center of Mass of Segments of the Human Body, AMRL-TR-69-70, Aerospace Medical Research Laboratory, Wright-Patterson Air Force Base (1969). Retrieved September 25, 2026. https://ntrs.nasa.gov/api/citations/19700027497/downloads/19700027497.pdf
51. Redtail eBikes, M23 range model, the computation set out in the range section of this review, every input and its source in its inputs table, checked against two published benchmarks and a 3,000 W hub of the same class; run September 27, 2026. https://redtailebikes.com/blogs/journal/smartravel-m23-review#range
52. Redtail eBikes, M23 fit model, the computation set out in the fit section of this review, every input and its source in its inputs table, the photograph's controls beside it; run September 27, 2026. https://redtailebikes.com/blogs/journal/smartravel-m23-review#fit