Smartravel ebikes brand profile cover: the Smartravel Raptor ST202 in grey parked on rocky ground before a stand of trees, under the headline one maker, six machines, with a stat box of 0 federal recalls naming Smartravel, ZOONLAI or ZonMen

Smartravel's lineup on our shelf, model by model: six e-bikes from Smartravel's own US store, each priced against that store on September 26, 2026, each specification read on Smartravel's and ZOONLAI's product pages, and the brand names searched in the federal recall register.

From $339.99Six models, free shipping in the lower 48
14 of 14Our prices equal to Smartravel's US store on September 26, 2026
0Federal recalls naming Smartravel, ZOONLAI or ZonMen
4.72 of 5Average of 241 owner reviews on Smartravel's pages

How we verified this brand profile. On September 26, 2026 we read every figure below from Smartravel's US product pages and records, ZOONLAI's listings of the same bikes, the USPTO trademark register and the CPSC recall database, and our prices from our own store the same evening. Range and fit are computed from published physics and the US Army's survey of 6,068 bodies; six of our Smartravel reviews set the arithmetic out in full.

By Milad Ghobadibeygvand, BScN (Western University, 2014), Redtail eBikes. Verified September 26, 2026.

Quick Answer Smartravel e-bikes come from Huizhou Zhongmeng Zhixing Technology Co., Ltd., the owner of the US SMARTRAVEL trademark, and we sell six: the $339.99 ZOONLAI UrbanX, the $699.99 Explorer DK400, the Rocket ST201F from $749.99, the $1,249.99 Raptor ST202 and M23, and the $1,699.99 Raptor ST202 Pro.

Pick by frame first. The UrbanX is a conventional commuter for riders of about 4'7" to 5'11", and the M23 is an off-road dirt bike rated 3,000 W. The other four are moped-style fat-tire bikes with fixed benches published at 32.3 to 34.25 inches; for a 180 lb rider holding 15 mph on the throttle over level pavement, our reviews compute all four at 48 to 133 miles.

The class section sets each motor against your state's line.

Which Smartravel fits you

Smartravel sells three kinds of machine, and the kind decides more than the motor does. The ZOONLAI UrbanX is a pedal commuter on 24-inch wheels with a seat post you can raise; the DK400, the Rocket and both Raptors are moped-style bikes on 20 × 4.0 fat tires, each with a bench that does not adjust; and the M23 is an electric dirt bike built for trails and private land.

Inside the moped-style four, the bench height and the pack separate them. The benches are published at 32.3 to 34.25 inches, and at the highest figure published for each, between 6 and 37 of every 100 riders at 5'8" sit with both feet flat (the fit table). The packs run from 873.6 Wh on the DK400 to 2,600 Wh on the Raptor ST202 Pro.

Every price below is the one Smartravel's own US store printed the same day, with Smartravel's higher regular price shown as the maker's list, and every bike ships free to the lower 48. The quick way to choose:

If you want Choose Our price
The lightest frame, for riders under about 5'11" Buy the UrbanX without a rack $339.99 (maker's list $699.99)
A moped-style bike rated 750 W sustained Buy the Explorer DK400 $699.99 (maker's list $1,599.99)
A retro café-racer with your choice of pack Buy the 873.6 Wh Rocket from $749.99 (maker's list $1,599.99)
GPS tracking and a 1,296 Wh pack Buy the Raptor ST202 in green $1,249.99 (maker's list $2,299.99)
Two motors and the largest pack Buy the ST202 Pro in green $1,699.99 (maker's list $2,699.99)
An electric dirt bike for private land Buy the M23 $1,249.99 (maker's list $2,899.99)

The ZOONLAI UrbanX electric bike in gray with a rear rack, three-quarter view facing left in a white studio The UrbanX in ZOONLAI's own studio photograph: the sloping top tube, the rear rack option and the 24-inch wheels.

500 W · 504 Wh · 58.37 lb

ZOONLAI UrbanX

$339.99 · maker's list $699.99

The UrbanX is the one Smartravel you ride like a bicycle: a 500 W rated geared hub motor with 60+ N·m, a 48 V 10.5 Ah pack of 504 Wh and a Shimano 7-speed, at 58.37 lb and a 330 lb payload on Smartravel's specification, with a seat height ZOONLAI's FAQ calls adjustable.

Smartravel gives it up to 40 miles with pedal assist and about 23 on electric power alone. Our UrbanX review works that pack out to 34 miles on the throttle and 58 pedaling easily, for a 180 lb rider cruising at 15 mph on the flat.

Choose it if you stand between about 4'7" and 5'11", the window Smartravel's FAQ recommends, and want the lightest frame of the six. Taller than that, or after a moped seat and fat tires, read the DK400 card next. The button orders it without a rack; the rack version is $359.99. Owners have left 21 reviews on Smartravel's page, 18 of them five stars.

Free delivery to the lower 48 · we take any warranty claim to Smartravel for you · Shop Pay: 4 interest-free payments of $84.99

The Smartravel Explorer DK400 moped-style fat-tire e-bike in black, parked alone on a residential street, drive side The Explorer DK400 parked on a residential street in Smartravel's own photograph: the bench seat, the pack on the down tube, the bag on the top tube and the 20 × 4.0 tires.

750 W sustained · 873.6 Wh · 68.3 lb

Smartravel Explorer DK400

$699.99 · maker's list $1,599.99

The DK400 is the lightest of the moped-style four at 68.3 lb: a rear hub Smartravel rates "750W (sustained), 1000W (peak)" with 80 N·m, a 48 V 18.2 Ah pack of 873.6 Wh, a Shimano 7-speed and 28 mph published. For a 180 lb rider on level pavement at 15 mph on the throttle, our DK400 review computes 51 miles from a charge, 83 with easy pedaling.

Choose it for the moped look at the lowest price and weight, if you stand about 5'8" or taller: at Smartravel's 33-inch figure 37 of 100 riders at 5'8" sit flat-footed, and 79 at 5'10". Shorter, the UrbanX suits you better. Owners have left 73 reviews on Smartravel's page, 60 of them five stars.

Ships free in the lower 48 · warranty claims handled by us with Smartravel · Shop Pay: 4 payments of $174.99 at 0% APR

The Smartravel Rocket ST201F retro moped-style e-bike in black, three-quarter view facing left in Smartravel's studio The Rocket ST201F in Smartravel's studio photograph: the café-racer tank line, the long bench and the caged headlight.

873.6 or 1,228.8 Wh · 104.1 lb

Smartravel Rocket ST201F

From $749.99 · maker's list $1,599.99

The Rocket ST201F comes in two versions on one listing: $749.99 with a 48 V 18.2 Ah pack of 873.6 Wh and 20 mph as ZOONLAI publishes it, or $1,149.99 with 1,228.8 Wh and 32 mph published.

Both carry a 1,200 W rear hub with a 1,500 W peak, one gear and 104.1 lb of retro café-racer; Smartravel rates the larger version's "1200W (sustained), 1500W (peak)" at 86 N·m, and ZOONLAI the smaller's at 55 N·m.

For a 180 lb rider holding 15 mph on the throttle on level pavement, our Rocket ST201F review computes 48 miles on the smaller pack and 68 on the larger. Its 34.25-inch bench is the tallest here, so it suits riders from about 5'11" up; the 1,228.8 Wh version is $1,149.99. Owners have left 108 reviews on Smartravel's page, averaging 4.62 of 5.

Free delivery to the lower 48 · one call to us starts a warranty claim · Shop Pay: 4 × $187.49 on the $749.99 version, or $103.80 a month for 12 months at 15% APR on the $1,149.99

The Smartravel Raptor ST202 fat-tire e-bike in green with a tan bench and rear rack, three-quarter view facing left in a white studio The Raptor ST202 in green in ZOONLAI's studio photograph: the rack behind the bench, the pack in the frame and the gold-rimmed wheels.

1,296 Wh · GPS · 113.9 lb

Smartravel Raptor ST202

$1,249.99 · maker's list $2,299.99

The Raptor ST202 is the single-motor Raptor: a rear hub rated "1200W (sustained), 1500W (peak)" at 86 N·m, a 48 V 27 Ah pack of 1,296 Wh, a Shimano 7-speed and, on Smartravel's page, GPS "real-time positioning, allowing you to monitor your ride on the app". Smartravel publishes 32 mph and 60 to 80 miles, at 113.9 lb.

Choose it if you want the GPS and a bigger pack than the Rocket's without paying for a second motor. Our Raptor ST202 review puts a full charge at 71 miles on the throttle and 107 pedaling easily, for a 180 lb rider at 15 mph on level pavement.

ZOONLAI prints the same geometry table for it and the ST202 Pro, with a 33.4-inch saddle height, where 22 of 100 riders at 5'8" and 67 at 5'10" sit flat-footed.

It comes in green and grey at $1,249.99; grey is here. Owners have left 32 reviews on Smartravel's page, 27 of them five stars.

Free shipping in the lower 48 · warranty claims go through us · Shop Pay: $112.82 a month for 12 months at 15% APR

The Smartravel Raptor ST202 Pro dual-motor fat-tire e-bike in white, three-quarter view in Smartravel's studio The Raptor ST202 Pro in white in Smartravel's studio photograph: a hub motor in the front wheel as well as the rear, and the pack in the frame triangle.

2 motors · 2,600 Wh · 123.7 lb

Smartravel Raptor ST202 Pro

$1,699.99 · maker's list $2,699.99

The ST202 Pro puts a hub motor in each wheel, each rated by Smartravel at 1,200 W sustained and 1,500 W peak with 86 N·m, under a 52 V 50 Ah pack of 2,600 Wh, about twice the Raptor ST202's. Smartravel publishes 35 mph and 80 miles, GPS tracking with an app and a Shimano 7-speed, at 123.7 lb.

Choose it for the longest rides: for a 180 lb rider at 15 mph on the throttle over level pavement, our Raptor ST202 Pro review computes 133 miles from a charge and 188 with easy pedaling. It weighs 55.4 lb more than the DK400, so plan a ground-floor parking spot. Green, grey and white are each $1,699.99; buy it in white. Owners have left 7 reviews on Smartravel's page, 6 of them five stars.

Delivered free to the lower 48 · we handle the warranty claim with Smartravel · Shop Pay: $153.44 a month for 12 months at 15% APR

The Smartravel M23 electric dirt bike in black with orange accents, three-quarter view in a white studio The M23 in ZOONLAI's studio photograph: the motocross seat, the 19-inch spoked wheels and the battery case in the frame.

6,500 W peak · 1,800 Wh · 70/100-19

Smartravel M23

$1,249.99 · maker's list $2,899.99

The M23 is Smartravel's electric dirt bike: a rear hub Smartravel rates at "3000W Nominal / 6500W Peak" with 200 N·m, a 60 V 30 Ah pack of 1,800 Wh, full suspension, 70/100-19 tires on spoked wheels and pedals with a Shimano 7-speed. Smartravel publishes 28 mph in Eco and 50 mph in Sport, 37 to 56 miles in its specification table and 117 lb.

Choose it for trails on private land and designated off-highway riding areas, if you stand between 5'4" and 6'5", Smartravel's suggested rider heights, and weigh with your gear under its 265 lb limit. The M23 section sets out where a machine of this power may go, and our electric dirt bike guide matches eight other electric dirt bikes to rider and terrain.

Our M23 review computes a full charge at 84 miles on the throttle and 119 with easy pedaling, for a 180 lb rider holding 15 mph on level pavement.

Ships free to the lower 48 · warranty claims start with us · Shop Pay: $112.82 a month for 12 months at 15% APR

Shop Pay terms are the plans each of our listings offered on September 26, 2026: under $1,000, three or four interest-free payments or 15% APR plans; from $1,000, 15% APR plans of 3, 6 or 12 months, each subject to an eligibility check. The monthly figures are 12-month plans at 15% APR.

The six Smartravel eBikes we sell

All six come from Smartravel's own US store, where the M23 and the UrbanX sit beside the four moped-style bikes, and we price every one of our 14 versions, colors and rack options at the figure that store printed on September 26, 2026. The first table is drive, pack, weight and price; the second is speed, Smartravel's range figures and charging.

Model and price Motor, as Smartravel rates it Pack Weight · limit
UrbanX, $339.99–$698.99 500 W rated, 60+ N·m 48 V 10.5 Ah, 504 Wh 58.37 lb · 330 lb
Explorer DK400, $699.99 750 W sustained, 1,000 W peak, 80 N·m 48 V 18.2 Ah, 873.6 Wh 68.3 lb · 350 lb
Rocket ST201F, $749.99–$1,149.99 1,200 W, 1,500 W peak; 86 N·m, or 55 on the smaller pack 873.6 or 1,228.8 Wh 104.1 lb · 350 lb
Raptor ST202, $1,249.99 1,200 W sustained, 1,500 W peak, 86 N·m 48 V 27 Ah, 1,296 Wh 113.9 lb · 350 lb
Raptor ST202 Pro, $1,699.99 2 hubs, each 1,200 W sustained, 1,500 W peak 52 V 50 Ah, 2,600 Wh 123.7 lb · 350 lb
M23, $1,249.99 3,000 W nominal, 6,500 W peak, 200 N·m 60 V 30 Ah, 1,800 Wh 117 lb · 265 lb

Motor, pack, weight and limit as Smartravel's US product pages printed them on September 26, 2026, the UrbanX's and M23's from their specification tables; prices from our listings the same day. The UrbanX's top price is two bikes with racks, and the Rocket's range is its two packs.

Model Top speed, as published Range, as published Charger
UrbanX 22–24 mph up to 40 mi with pedal assist, about 23 on electric "48V 2A"
Explorer DK400 28 mph 45+ mi 54.6 V, 2 A
Rocket ST201F 20 or 32 mph by version 45+ or 60–80 mi by version 54.6 V, 3 A
Raptor ST202 32 mph 60–80 mi 54.6 V, 3 A
Raptor ST202 Pro 35 mph 80 mi 58.8 V, 3 A
M23 28 mph Eco, 50 mph Sport 37–56 mi 67.2 V, 3.5 A

Speeds, range and chargers in Smartravel's own words on its US pages; the Rocket's 20 mph and 45+ miles for the 873.6 Wh version are ZOONLAI's, the only store that prints them, and Smartravel's model-comparison chart on the Raptor ST202 page adds "65+ mph (Race)" for the M23. The next section works out the miles for a named rider at a named speed.

Five of the six shift through a Shimano 7-speed; the Rocket ST201F has one gear. The UrbanX and the DK400 stop on mechanical disc brakes, the DK400's as our DK400 review reads its feature copy and manual, and the Rocket, both Raptors and the M23 on hydraulic discs by Smartravel's specifications; the M23 adds full suspension and spoked dirt-bike wheels.

All six were orderable on our store on September 26, 2026, from $339.99 for the UrbanX to $1,699.99 for the Raptor ST202 Pro, each at Smartravel's own US price. The Smartravel collection also lists a used Rocket ST201F, sold out that day; every new model ships free inside the contiguous United States.

Shop Smartravel at Redtail

How far each Smartravel goes

Smartravel's range figures assume very different riding, and one division shows how different. Divide each pack's watt-hours by Smartravel's longest range figure for it, and you get the energy a mile may use at that figure; the lower the number, the gentler the riding the figure assumes.

Model Pack Smartravel's longest figure Wh a mile it allows
UrbanX 504 Wh 40 mi, with pedal assist 12.6
Rocket ST201F, 1,228.8 Wh 1,228.8 Wh over 80 mi, with pedal assist 15.4
Raptor ST202 1,296 Wh 60–80 mi, read at 80 16.2
Explorer DK400 873.6 Wh 45+ mi 19.4
M23 1,800 Wh up to 65 mi, feature copy 27.7
Raptor ST202 Pro 2,600 Wh 80 mi 32.5

Each pack from Smartravel's specification tables, read September 26, 2026; the M23's specification table prints 37–56 mi and its feature copy up to 65. Watt-hours divided by miles is our arithmetic.

So the ST202 Pro's 80 miles is a cautious figure for its pack and the UrbanX's 40 a generous one: 32.5 Wh a mile is hard throttle riding, and 12.6 is light pedaling on a light bike.

For the six Smartravels we have reviewed, the range model in each review turns the published figures into a steady ride on level pavement for a 180 lb rider:

Bike 15 mph on the throttle 15 mph, easy pedaling Plan on, 75% of the throttle figure
UrbanX 34 miles 58 miles 26 miles
Explorer DK400 51 miles 83 miles 38 miles
Rocket ST201F, 873.6 Wh 48 miles 74 miles 36 miles
Rocket ST201F, 1,228.8 Wh 68 miles 104 miles 51 miles
Raptor ST202 71 miles 107 miles 53 miles
M23 84 miles 119 miles 63 miles
Raptor ST202 Pro 133 miles 188 miles 100 miles

Computed in each review from Smartravel's published figures and Martin and colleagues' cycling-power model: a 180 lb rider on level pavement in still 77 °F air, easy pedaling at 75 W. The 75% plan keeps a quarter in reserve, the share one measured pedelec left unused in a standard laboratory range test (Schmitt, Decker and Doppelbauer, 2019).

Hills, wind, stop-and-go traffic, cold air and a heavier load all shorten those rides; each review prices them row by row.

Budget three quarters of the steady figure. At 15 mph on the throttle with 180 lb aboard, the plan comes to 26 miles on the UrbanX, 36 on the smaller Rocket, 38 on the DK400, 51 on the larger Rocket, 53 on the Raptor ST202, 63 on the M23 and 100 on the Raptor ST202 Pro.

Send us your commute: the distance, the climbing, your weight with gear and your usual speed. We will run the trip for any of the six before you order and reply in miles, with the pack that covers it; write to support@redtailebikes.com.

See the ST202 Pro range tables

Can you put both feet down? Fit by height

On the four moped-style Smartravels and the M23 the seat does not move, so the first fit question is the stop, not the saddle. Seated at a light, your barefoot inseam either reaches the ground from the seat's height or it does not; the table counts how many riders of 100 at each height it reaches, using the 6,068 soldiers in the US Army's 2012 anthropometric survey.

Your height Explorer DK400, 33 in Rocket ST201F, 34.25 in Raptor ST202 and Pro, 33.4 in M23, 33.07 in
5'4" 0 of 100 0 of 100 0 of 100 0 of 100
5'6" 11 of 100 1 of 100 5 of 100 10 of 100
5'8" 37 of 100 6 of 100 22 of 100 35 of 100
5'10" 79 of 100 30 of 100 67 of 100 79 of 100
6'0" 96 of 100 77 of 100 92 of 100 96 of 100
6'2" 100 of 100 97 of 100 100 of 100 100 of 100

Riders of 100 at each height whose barefoot inseam reaches the seat height, at the highest figure either of the maker's two stores publishes: 33 in in Smartravel's DK400 FAQ, 34.25 in on ZOONLAI's Rocket 1500 W table, 33.4 in on ZOONLAI's Raptor tables and 33.07 in on ZOONLAI's M23 table.

Where a lower figure is also published, our reviews print it too: at the DK400's 32.3-inch drawing height 66 of 100 riders at 5'8" sit flat-footed, and at the 33-inch figure both Raptors' FAQs give, 37 of 100.

Find your row after measuring your inseam: stand in socks with your back to a wall, pull a hardcover book up between your legs, and read the height of its top edge. The count takes each bench as a single height, so the reach its width takes from your legs sits in Limitations.

ZOONLAI's dimension drawing of the UrbanX, with a wheelbase of 44.49 inches, a recommended rider height of 4'7" to 5'11", a 330 lb load capacity and a 58.37 lb bike weight ZOONLAI's own drawing of the UrbanX, with its dimensions, load capacity and recommended rider heights.

The UrbanX is fitted the other way, by its adjustable seat. Smartravel's FAQ answers "The recommended rider height is approximately 4'7"–5'11"", and for heights at the edges of that window we will set your inseam against ZOONLAI's drawing before you order. Smartravel's own dimension image prints 5'5" to 6'5" instead, and our UrbanX review prints both windows next to a saddle-height table by inseam.

For pedaling, the benches on the four moped-style Smartravels we have reviewed sit below the height the 109%-of-inseam formula asks for (Peveler et al., 2005) at every height their tables list, so the throttle and pedal assist carry the pace and your knee stays more bent at the bottom of each stroke. Each review's pedaling table gives your gap in inches.

Of the five fixed seats, the DK400's and the M23's put the most riders flat-footed between 5'6" and 5'10"; from 5'11" up, more than half do on every moped-style Smartravel, 56 of 100 on the Rocket's 34.25-inch bench. Email your height and inseam to support@redtailebikes.com and we will read them against the seat you are choosing before you pay.

See the DK400 stop table

The class question: 500 W to 3,000 W

Read this before choosing, because Smartravel's motors run from under the power line the e-bike statutes draw to four times it. Federal law draws its line in 15 U.S.C. § 2085(b), which names a motor limb and a speed limb:

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.

Each state then writes its own. In California, Vehicle Code § 312.5(a) admits a bicycle with "an electric motor that does not exceed 750 watts of power", and § 406(a) defines a moped partly by a motor that produces "less than 4 gross brake horsepower" and a top speed on level ground of "not more than 30 miles per hour".

Model Motor, as published Against the 750 W in both e-bike texts Top speed, as published
UrbanX 500 W rated under it 22–24 mph, the 24 at pedal-assist level 5
Explorer DK400 750 W sustained, 1,000 W peak not "less than" the federal 750 W; does not "exceed" California's 28 mph
Rocket ST201F 1,200 W, both versions over both 20 or 32 mph by version
Raptor ST202 1,200 W sustained over both 32 mph
Raptor ST202 Pro 2 × 1,200 W sustained over both 35 mph
M23 3,000 W nominal over both 28 mph Eco, 50 mph Sport

From the three texts and Smartravel's US product pages, each read September 26, 2026. Neither e-bike text says whether it means a motor's sustained or its peak figure; the table reads the sustained one, and the DK400's 1,000 W peak is over both. Converted at 745.7 W per horsepower, the 1,200 W sustained rating comes to 1.6 hp and the M23's 3,000 W nominal to 4.0.

Your state's vehicle code decides what each of these is on its roads and what it asks of you. Our 50-state e-bike law atlas prints every state's definitions, and our California e-bike law page that state's in full.

Trails and federal land

Off the pavement, the land manager decides. On land the Bureau of Land Management runs, 43 CFR 8340.0-5 counts any motorized vehicle as an off-road vehicle except those it lists, among them an e-bike ridden where and as the exclusion allows, and its e-bike has "an electric motor of not more than 750 watts (1 h.p.)".

On BLM land, a rider who breaks the off-road rules in subparts 8341 and 8343 faces the penalty 43 CFR 8340.0-7 sets: "a fine of not more than $1,000 or imprisonment for not longer than 12 months, or both".

In National Forests, 36 CFR 261.13 limits motor vehicles to the roads and trails a motor vehicle use map shows, and 36 CFR 261.1b sets "imprisonment of not more than six months or a fine" for breaking that part.

Our public-land e-bike guide walks through each agency's rule.

The M23 is an off-road machine

At 3,000 W nominal and 50 mph in Sport, the M23 sits above the 750 W in both e-bike texts quoted here and above the 30 mph in California's moped definition. Ride it on private land with the owner's permission and in off-highway areas the managing agency designates for motor vehicles; our electric dirt bike guide covers where riders of this class of machine go.

Match the motor to where you ride before you order. The UrbanX's 500 W sits under the 750 W in both e-bike texts quoted here; the DK400's sustained 750 W is not "less than" the federal figure and does not "exceed" California's; and the other four are rated above it.

Tell us the roads, paths and trails you plan to use, and we will set out what each one's rule asks of the Smartravel you are choosing. Email support@redtailebikes.com before you order; this button opens checkout for the UrbanX at $339.99, the model with the smallest motor.

Order the 500 W UrbanX

Who makes Smartravel e-bikes

The US SMARTRAVEL trademark belongs to Huizhou Zhongmeng Zhixing Technology Co., Ltd. The USPTO's status record for registration 7,533,630 shows the mark live, registered October 15, 2024, for "Electric bicycles; Folding electric bicycles", first used in US commerce on October 22, 2022, and names the owner in the Zhongkai High-tech Zone of Huizhou, China.

The same company holds two more names buyers meet. The YYG registration, 6,498,556, was assigned to it in full in a transfer recorded September 14, 2022, and two November 2022 owner reviews on Smartravel's Rocket page call the bike the YYG, one of them the "YYG BR100"; ZONMEN-BK, registration 7,557,204, is the name the M23's page and frame carry.

ZOONLAI, the UrbanX's name, is registration 7,682,289, held by Huizhou Zhonglai Technology Co., Ltd., and ZOONLAI's home page states the tie in its own words: "Zoonlai and Smartravel are part of the same company, operating two dedicated product lines to serve different riding needs."

Smartravel describes its aim on its About Us page as "To inspire everyone towards joy by breaking life's routine with advanced electric bikes and innovative technologies." Its US store lists 16192 Coastal Highway, Lewes, Delaware 19958, the phone line +1 888-969-9221 and support@smartravel-bike.com on its contact page.

One company holds the SMARTRAVEL, YYG and ZONMEN-BK trademarks: Huizhou Zhongmeng Zhixing Technology Co., Ltd. The ZOONLAI mark is registered to Huizhou Zhonglai Technology Co., Ltd., and ZOONLAI's home page calls the two brands part of the same company.

Smartravel in the federal recall register

No recall names Smartravel. A September 26, 2026 search of the Consumer Product Safety Commission's recall database found none under Smartravel, Smart Travel, Smartravelor, ZOONLAI or ZonMen, or under Tomofree, YYG and BR100, names owners and a reviewer have given the Rocket, in the recall title, product name or manufacturer field, and none of 623 bicycle, e-bike, battery and scooter records carries the brand or a Smartravel model code.

The empty result counts because the same search of the CPSC's database returned the recalls known to exist for three control brands: 1 for Ancheer, 54 for Specialized and 24 for Trek.

On certification, Smartravel's pages carry a badge reading "TUV Certified" and "In accordance with UL 2849", and its UrbanX FAQ says "The UrbanX electrical system is certified in accordance with the UL 2849 safety standard." For the certificate itself, ask us and we will request it from Smartravel in writing.

Buying a Smartravel from us

Smartravel's warranty and return policy sets 12 months of cover on the frame, motor, controller, charger, display and battery, and sends buyers from other sellers to "their original dealer". Bought from us, that dealer is Redtail: send photos or video of the fault with your order number, and we take the claim to Smartravel for you.

What you get from us The detail
Delivery Free within the contiguous United States; dispatched within 1–3 business days, most e-bikes arriving 5–10 business days later. Alaska, Hawaii, US territories, P.O. boxes and remote routes: ask us first
Damage in transit Note it with the driver and email us photos within 48 hours; we file the carrier claim and arrange the repair or replacement
A fault after delivery Covered under Smartravel's warranty, and we coordinate the repair or replacement remotely
Paying over time Shop Pay on each listing: three or four interest-free payments under $1,000, or 15% APR plans of 3, 6 or 12 months, subject to an eligibility check
Before you pay Send your height, inseam and routes, and we answer the fit, range and class questions in writing

Our policies and listings, read September 26, 2026.

A change of mind is possible on a bike still sealed in its factory packaging, requested within 72 hours of delivery, with a 15% restocking fee plus return shipping, and a canceled order carries a 3% transaction fee, under our refund policy. Ask your questions first and choose once.

Every Smartravel we sell comes with one support address, before delivery and after it: support@redtailebikes.com. This button opens checkout for the Raptor ST202 in green at $1,249.99, or $112.82 a month for 12 months at 15% APR through Shop Pay.

Get the Raptor ST202 now

Batteries, chargers and manuals

Each model takes its own pack, so match the label and the model before buying a spare: Smartravel's battery collection sells replacements by model name, and we will confirm the right one for your bike with Smartravel before you order.

The chargers differ too. Smartravel lists 54.6 V at 2 A for the DK400, 54.6 V at 3 A for the Rocket and the Raptor ST202, 58.8 V at 3 A for the 52 V ST202 Pro and 67.2 V at 3.5 A for the 60 V M23, and the UrbanX's page names its charger "48V 2A" (the lineup tables); a charger from one model is not a spare for another.

Owner's manuals and assembly videos sit on Smartravel's manuals page. Smartravel's FAQs call the moped-style bikes "90% assembled", with the handlebars to secure, and the UrbanX arrives "partially assembled", with the tools included.

The honest ledger

Green flags

Who should read something else first

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

If this is you Read this instead
You are under about 5'8" and want both feet flat at stops the UrbanX card, or our e-bike reviews hub for lower frames
Your trips must stay inside your state's e-bike definition the class section, which sets all six against the federal and California lines; at 500 W, the UrbanX carries the lowest rating of the six
You plan to carry a passenger email us what you carry and we will match a cargo bike from our range; the moped-style four's 350 lb is rider and cargo combined
You carry your bike up stairs to park the 58.37 lb UrbanX; the moped-style four weigh 68.3 to 123.7 lb
You want the M23 for commuting the Raptor ST202 card: a moped-style Smartravel with GPS tracking, where the M23 is an off-road machine

Four checks before you order

Who holds the SMARTRAVEL trademark

Search the USPTO's trademark register for SMARTRAVEL, or open the status record for registration 7,533,630 directly; the owner, its address and the goods covered are on the record.

The recall record

Search the CPSC's recall database for Smartravel, ZOONLAI and ZonMen, and read any result's product name before counting it.

Your inseam against the seat height

Measure your inseam in socks, then find your row in the stop table; for the UrbanX, compare your height with its 4'7" to 5'11" window.

Find your state in our 50-state e-bike law atlas and hold its definition against the motor rating in the class table for the model you are choosing.

Frequently asked questions

Is Smartravel a legit e-bike company?

Yes: the US SMARTRAVEL trademark is registered to Huizhou Zhongmeng Zhixing Technology Co., Ltd. (USPTO registration 7,533,630), Smartravel runs its own US store, no federal recall names the brand, and its product pages carry 241 owner reviews averaging 4.72 of 5 across five models.

Who makes Smartravel e-bikes?

Huizhou Zhongmeng Zhixing Technology Co., Ltd., the owner of the US SMARTRAVEL, YYG and ZONMEN-BK trademarks (USPTO registration 7,533,630), with its registered address in the Zhongkai High-tech Zone of Huizhou, China (the record section).

Is ZOONLAI the same company as Smartravel?

ZOONLAI says so on its home page: "Zoonlai and Smartravel are part of the same company, operating two dedicated product lines to serve different riding needs." The ZOONLAI trademark is registered to Huizhou Zhonglai Technology Co., Ltd., and Smartravel's US store sells the ZOONLAI UrbanX (the record section).

Is Smartravel the same as YYG?

The same company holds both US trademarks: YYG registration 6,498,556 was assigned to Huizhou Zhongmeng Zhixing Technology Co., Ltd. in 2022 (USPTO record), and two owners who reviewed the Rocket ST201F on Smartravel's page in November 2022 call it the YYG, one of them the YYG BR100.

How fast does a Smartravel go?

By model, as Smartravel publishes it: 22 to 24 mph for the UrbanX, 28 mph for the DK400, 20 or 32 mph for the two Rocket versions, 32 mph for the Raptor ST202, 35 mph for the ST202 Pro, and 28 mph in Eco or 50 mph in Sport for the M23, whose entry in Smartravel's model-comparison chart adds 65+ mph in a Race mode (the lineup).

How far can a Smartravel go on one charge?

For a 180 lb rider holding 15 mph on the throttle over level pavement, our reviews compute 34 miles on the UrbanX, 51 on the DK400, 48 or 68 on the two Rockets, 71 on the Raptor ST202, 84 on the M23 and 133 on the Raptor ST202 Pro. Smartravel's own figures run from 40 miles for the UrbanX to 80 for the ST202 Pro (the range section).

How much weight can a Smartravel carry?

Smartravel publishes 350 lb for rider and cargo on the DK400, the Rocket and both Raptors, 330 lb on the UrbanX, and 265 lb in the M23's specification table, the figure to plan on; ZOONLAI's FAQ gives the smaller Rocket about 330 lb (the lineup).

What is the seat height on a Smartravel?

The moped-style benches are published at 32.3 to 33 inches for the DK400, up to 34.25 for the Rocket ST201F and 33 to 33.4 for both Raptors, and the M23's at 33.07; the UrbanX's seat adjusts for riders of about 4'7" to 5'11". At 5'8", 37 of 100 riders sit flat-footed on the DK400's 33 inches (the fit table).

That depends on your state and on the model. The UrbanX is rated 500 W, the DK400 750 W sustained, and the Rocket, both Raptors and the M23 more, against the 750 W in the federal definition and California's; the class section sets each against the lines.

What warranty comes with a Smartravel?

Smartravel's warranty policy sets 12 months on the frame, motor, controller, charger, display and battery. Bought from us, you send photos or video with your order number and we take the claim to Smartravel (warranty, delivery and returns).

Can I ride a Smartravel in the rain?

Light rain, yes: Smartravel's FAQ says "Our e-bikes are water-resistant, so they can handle light rain and wet roads. However, they are not fully waterproof", and asks riders to avoid heavy rain and submerging parts.

Does a Smartravel arrive assembled?

Mostly. Smartravel's FAQs call the moped-style bikes "90% assembled", with the handlebars to fit, and the UrbanX arrives "partially assembled", with the tools for the handlebar, pedals, front wheel and optional rack (batteries, chargers and manuals).

How long does a Smartravel battery take to charge?

Smartravel quotes 4 to 6 hours for the UrbanX and M23 packs and 5 to 6 hours for the Raptor ST202's; the Rocket's review works the arithmetic for both of its packs (the Rocket ST201F review).

Where can I buy a Smartravel replacement battery or charger?

From Smartravel's battery collection, matched by model; each model's charger rating is in the lineup, and we will confirm the right pack for your bike with Smartravel before you order.

How do I contact Smartravel customer service?

Smartravel's US page lists +1 888-969-9221 and support@smartravel-bike.com (its contact page). Bought from us, write to support@redtailebikes.com and we deal with Smartravel for you.

Which UrbanX option should I buy?

Choose by the rack: $339.99 without one, $359.99 with one, and two-bike bundles from $658.99; all share the same frame and 48 V 10.5 Ah pack, 504 Wh (the UrbanX card).

What do owners say about Smartravel e-bikes?

On September 26, 2026 Smartravel's product pages carried 241 owner reviews across five of the six, averaging 4.72 of 5: 73 for the DK400, 108 for the Rocket ST201F, 32 for the Raptor ST202, 7 for the ST202 Pro and 21 for the UrbanX.

The bottom line

One maker, six machines. Smartravel covers three kinds of rider from one company and one US store: the $339.99 UrbanX for shorter commuters on a conventional frame, four moped-style fat-tire bikes from the $699.99 DK400 to the $1,699.99 Raptor ST202 Pro, and the $1,249.99 M23 for private-land trails.

We sell all six at the prices Smartravel's own US store printed on September 26, 2026, ship each free to the lower 48 and take any warranty claim to Smartravel for you.

Choose the frame first, then the pack: under about 5'8", the UrbanX; for the moped look at the lowest price and weight, the DK400; for the most miles, the ST202 Pro at a computed 133 on the throttle at 15 mph; for GPS without a second motor, the Raptor ST202. Settle the class question for your state before the first ride.

The DK400 is the Smartravel most riders can start with: $699.99, or 4 interest-free payments of $174.99, with 873.6 Wh and a 68.3 lb frame. Taller riders after more range can step up to the Raptor ST202 Pro at $1,699.99; every order ships free to the lower 48.

Order the DK400, $699.99

Limitations

Fourteen things this profile cannot settle, set out so you can weigh them.

  1. We sell these bikes. Read the fit column of the ledger as closely as the green flags.
  2. This profile is specification-verified. Its figures come from Smartravel's US product pages and records, ZOONLAI's listings, the USPTO and CPSC records, statutes, our own store record, and arithmetic on this page.
  3. Every range figure is one steady ride: one speed, level pavement, no wind, no stops. The computed rows cover the six models we have reviewed; for the others, the table shows Smartravel's own figures.
  4. The stop table treats each bench as a line at the highest seat height the maker publishes. The DK400's drawing prints 32.3 inches and its FAQ 33, the Raptors' FAQ 33 and ZOONLAI's tables 33.4, and the Rocket's FAQ 33 against ZOONLAI's 33.46 for the 1200 W version and 34.25 for the 1500 W; the lower figures seat more riders flat-footed.
  5. 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.
  6. Where Smartravel's representations of one model differ, this profile prints the planning figure and names the other here. The M23's specification table gives 117 lb, a 265 lb limit and riders of 5'4" to 6'5"; ZOONLAI's M23 table gives 152 lb, 330 lb and 5'3" to 6'3", and Smartravel's model-comparison chart on the Raptor ST202 page gives 287 lb and "65+ mph (Race)", where the M23's own page tops out at 50 mph in Sport. The UrbanX's specification table rates it 500 W and 24 mph, its spec strip "Peak Motor 500W" and 22 mph, and its rider window is 4'7" to 5'11" in both stores' FAQs and 5'5" to 6'5" on Smartravel's dimension image. ZOONLAI's FAQ says the smaller Rocket is "designed to support riders up to approximately 330 lbs", where Smartravel's table gives 350.
  7. The ST202 Pro's page strip prints 150 N·m and 35 mph, where its specification table rates each of its two hubs at 86 N·m, and the DK400's feature copy prints 86 N·m where its table gives 80; this profile prints the tables' figures. The DK400's specification table lists "hydraulic disc" brakes, where its feature copy and manual describe mechanical discs; this profile follows the manual.
  8. The Rocket's 873.6 Wh version has its speed and range published only on ZOONLAI's listing, 20 mph and 45+ miles; Smartravel's US page names and prices the version.
  9. Warranty terms are stated as Smartravel's warranty policy sets them, 12 months; other Smartravel documents describe other terms, and our reviews list them for each model.
  10. The UL statements are in Smartravel's words. The pages read here do not link a certificate.
  11. The recall search covers the CPSC's US database under the names listed, on September 26, 2026.
  12. Owner review counts are Smartravel's product pages as served that day; ZOONLAI's store shows its own reviews, which this profile does not add in.
  13. The trademark record shows who owns the US marks, not where each bike is assembled.
  14. Prices, versions and stock were read on September 26, 2026, and each can change.

Expiry conditions

Re-read this page if Smartravel changes a model's price, motor rating, pack, seat height, load limit or range figures on its US store; if a Smartravel model is added to or removed from our shelf; if the USPTO record for SMARTRAVEL, YYG, ZONMEN-BK or ZOONLAI changes owner; or if our prices or Shop Pay terms change.

Re-read it as well if a recall is published naming Smartravel, ZOONLAI, ZonMen or a Smartravel model. Verified September 26, 2026.

Source register

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

T1 is the official record, read from the body that issued it: a statute, a federal regulation, the USPTO and CPSC records and the US Army's survey data. T2 is an organization's own publication about itself: Smartravel's and ZOONLAI's pages about their bikes, and our own policies and listings. T3 is peer-reviewed work, used for the method behind the range and fit figures.

Source Tier What it supports
Smartravel, US product pages and records for the UrbanX, DK400, Rocket ST201F, Raptor ST202, ST202 Pro and M23 T2 (the maker's own pages) Prices, versions, every specification figure, FAQs, owner review counts
Smartravel, US store collection, About Us, contact page, warranty and return policy, battery collection, manuals page T2 (the maker's own pages) Smartravel's own prices, the company's stated aim, US contact details, the warranty, spare packs, manuals
ZOONLAI, home page and listings of the UrbanX, the Rocket's 1200 W and 1500 W versions, Raptor ST202 and M23 T2 (the maker's own second store) The same-company statement, geometry tables, the Rocket versions' figures, the UrbanX's FAQ and drawing
USPTO, Trademark Search and status records for SMARTRAVEL, YYG, ZONMEN-BK and ZOONLAI T1 (federal agency) Owners, registration dates, goods, first use, the YYG assignment
CPSC recall database T1 (federal agency) The recall search, its names and its controls
15 U.S.C. § 2085 · Cal. Veh. Code § 312.5 · § 406 T1 (GPO, legislature) The e-bike and moped lines, quoted
43 CFR part 8340 · 36 CFR 261.13 · 36 CFR 261.1b T1 (federal regulation) BLM and Forest Service rules and their penalties
Redtail eBikes shipping policy, refund policy and our Smartravel listings T2 (our own policies and listings) Our prices, Shop Pay terms, delivery, damage and return terms
Martin et al., 1998 · Schmitt, Decker and Doppelbauer, 2019 T3 (peer-reviewed and laboratory work) The range model behind the reviews' figures and the 75% plan
US Army ANSUR II, 2012 · Peveler et al., 2005 T1 / T3 The 6,068 bodies behind the stop table; the saddle formula

Primary sources

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

  1. Smartravel, ZOONLAI UrbanX — product page (specification table, FAQ, spec strip, owner reviews), as rendered for the US market. Retrieved September 26, 2026. https://www.smartravelor.com/products/zoonlai-urbanx
  2. Smartravel, Smartravel Explorer DK400 — product page (Spec&Size table, FAQ, spec strip, owner reviews). Retrieved September 26, 2026. https://www.smartravelor.com/products/smartravel-electric-bike-for-adults-fat-tire-ebike-with-1200w-motor-48v-17-5ah-removable-battery-up-to-28-mph-shimano7-speed-dual-shock-absorber-mountain-ebike
  3. Smartravel, Smartravel Rocket ST201F — product page (Spec&Size table, feature copy, FAQ, owner reviews). Retrieved September 26, 2026. https://www.smartravelor.com/products/electric-bike
  4. Smartravel, Smartravel Raptor ST202 GPS-Enabled All-Terrain Electric Bike — product page (Spec&Size table, comparison chart, FAQ, owner reviews). 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
  5. Smartravel, Smartravel Raptor ST202 Pro — product page (Spec&Size table, feature copy, FAQ, owner reviews). Retrieved September 26, 2026. https://www.smartravelor.com/products/smartravel-raptor-st202-pro
  6. Smartravel, Smartravel 6500W Electric Dirt Bike M23 — product page (Spec&Size table, feature copy, FAQ). Retrieved September 26, 2026. https://www.smartravelor.com/products/zonmen-6500w-electric-dirt-bike-m23
  7. Smartravel, About Us (mission statement). Retrieved September 26, 2026. https://www.smartravelor.com/pages/about-us
  8. Smartravel, Contact Us (US address, phone and email). Retrieved September 26, 2026. https://www.smartravelor.com/pages/contact
  9. Smartravel, Warranty&Return Policy (the component table and dealer route). Retrieved September 26, 2026. https://www.smartravelor.com/pages/return-policy
  10. Smartravel, Electric Bike Replacement Batteries (battery collection). Retrieved September 26, 2026. https://www.smartravelor.com/collections/battery
  11. Smartravel, Download my owner's manual or view assembly video (manuals page). Retrieved September 26, 2026. https://www.smartravelor.com/pages/download-my-owners-manual-or-view-assembly-video
  12. Smartravel, Electric Bikes for Adults (the US store's electric-bike collection and prices). Retrieved September 26, 2026. https://www.smartravelor.com/collections/electric-bike
  13. ZOONLAI, Home page, the brand paragraph: "Zoonlai and Smartravel are part of the same company, operating two dedicated product lines to serve different riding needs". Retrieved September 26, 2026. https://www.zoonlai.com/
  14. ZOONLAI, Smartravel Rocket ST201 D — product page (the 873.6 Wh version's speed and range). Retrieved September 26, 2026. https://www.zoonlai.com/products/smartravel-rocket-st201-d
  15. ZOONLAI, Smartravel Raptor ST202 — product page (geometry table, size slider). Retrieved September 26, 2026. https://www.zoonlai.com/products/smartravel-raptor-st202
  16. ZOONLAI, ZonMen 6500W Electric Dirt Bike M23 — product page (geometry table, rider height, load and weight). Retrieved September 26, 2026. https://www.zoonlai.com/products/zonmen-6500w-electric-dirt-bike-m23
  17. ZOONLAI, ZOONLAI UrbanX — product page (FAQ on the adjustable seat, key specifications with "Up to 24 mph (PAS Level 5)", the dimension drawing). Retrieved September 26, 2026. https://www.zoonlai.com/products/zoonlai-urbanx
  18. ZOONLAI, Smartravel Rocket ST201 — product page (the 1500 W version's geometry table, its saddle height F at 34.25 inches). Retrieved September 26, 2026. https://www.zoonlai.com/products/smartravel-rocket-st201
  19. United States Patent and Trademark Office, TSDR status record, SMARTRAVEL, serial 98201852, registration 7,533,630. Retrieved September 26, 2026. https://tsdr.uspto.gov/statusview/sn98201852
  20. United States Patent and Trademark Office, TSDR status record and assignment, YYG, serial 90371558, registration 6,498,556 (assignment recorded September 14, 2022, reel/frame 7847/0254). Retrieved September 26, 2026. https://tsdr.uspto.gov/statusview/sn90371558
  21. United States Patent and Trademark Office, TSDR status record, ZONMEN-BK, serial 98309421, registration 7,557,204. Retrieved September 26, 2026. https://tsdr.uspto.gov/statusview/sn98309421
  22. United States Patent and Trademark Office, TSDR status record, ZOONLAI, serial 98204833, registration 7,682,289. Retrieved September 26, 2026. https://tsdr.uspto.gov/statusview/sn98204833
  23. United States Patent and Trademark Office, Trademark Search. Retrieved September 26, 2026. https://tmsearch.uspto.gov/
  24. US Consumer Product Safety Commission, Recall database, recall title, product name and manufacturer queries for Smartravel, Smart Travel, Smartravelor, ZOONLAI, ZonMen, YYG, Tomofree and BR100, a model-code read of a 623-record corpus, and controls Ancheer / Specialized / Trek. Retrieved September 26, 2026. https://www.saferproducts.gov/
  25. 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
  26. 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.
  27. California Legislative Information, California Vehicle Code § 406, subdivision (a). Retrieved September 26, 2026. https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=VEH&sectionNum=406.
  28. Bureau of Land Management, 43 CFR part 8340, §§ 8340.0-5 (definitions) and 8340.0-7 (penalties). Retrieved September 26, 2026. https://www.ecfr.gov/current/title-43/subtitle-B/chapter-II/subchapter-H/part-8340
  29. 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
  30. Forest Service, US Department of Agriculture, 36 CFR § 261.1b — Penalty (89 FR 92815, November 25, 2024). Retrieved September 26, 2026. https://www.ecfr.gov/current/title-36/chapter-II/subchapter-B/part-261/subpart-A/section-261.1b
  31. Redtail eBikes, Shipping policy. Retrieved September 26, 2026. https://redtailebikes.com/policies/shipping-policy
  32. Redtail eBikes, Refund policy (damage window, change of mind and cancellation terms). Retrieved September 26, 2026. https://redtailebikes.com/policies/refund-policy
  33. Redtail eBikes, Smartravel collection and listings (prices, versions, availability, Shop Pay plan tables). Retrieved September 26, 2026. https://redtailebikes.com/collections/smartravel
  34. 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). Retrieved September 23, 2026. https://collections.lib.utah.edu/dl_files/b4/8e/b48ef26086091662c561e673d7bd990d77868437.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). Retrieved September 23, 2026. https://publikationen.bibliothek.kit.edu/1000100371/50695920
  36. U.S. Army Natick Soldier Research, Development and Engineering Center, 2012 Anthropometric Survey of U.S. Army Personnel (ANSUR II), public data release. Retrieved September 25, 2026. https://www.army.mil/article/188601/for_good_measure_natick_releases_raw_data_from_army_wide_anthropometric_survey
  37. 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 (February 2005). Retrieved September 25, 2026. https://www.asep.org/asep/asep/JEPonlineFEBRUARY2005_PevelerSaddle.doc