
The Cyrusher Roam is a full suspension fat tire e-bike with a step thru frame and a torque sensor: a 52V 750W hub motor in the rear wheel, assist that matches how hard you pedal, and a 52V 15.6Ah battery, 811Wh, sealed inside the down tube. Cyrusher rates it at 28 MPH and up to 62 miles.
A coil rear shock and an adjustable oil and spring fork carry it over roots, gravel and broken pavement on 26 x 4 puncture resistant fat tires. Hydraulic disc brakes on 180mm rotors stop it, and a Shimano 7 speed covers the climbs. It weighs 81.6 lb and carries 350 lb.
The frame steps through at 21.3 inches, so getting on in work clothes or with a loaded rack is a step, not a swing, and one size fits riders 5'7" to 6'7". Want more battery and a torque sensor with Tektro brakes? That is the Trax 2.0.
Built to be lived with
A 6061 aluminium step thru frame with the battery inside, a 165mm coil rear shock, an adjustable oil and spring fork, a 170mm 52T forged crank on a stainless chain and 26 x 4 puncture resistant fat tires on alloy rims.
A mid mounted LCD with USB, thumb throttle, kickstand and sport saddle on a 30.4mm post all come on the bike, with an air pump and tool set in the box. Frame, motor and controller are covered for two years, battery and parts for one.
The Roam puts a coil shock, 165mm long and rated to 750 lb, under the seat and an oil and spring fork with adjustment up front. On 26 x 4 puncture resistant fat tires that soaks up roots, gravel and broken pavement instead of passing it up through the saddle. Cyrusher sells a 165mm air shock as an optional upgrade if you want to tune it further.
The frame is 6061 aluminium with the battery inside the down tube, and it steps through at 21.3 inches, so you get on without swinging a leg over. Cyrusher fits one size to riders from 5'7" to 6'7", with the saddle adjusting from 35.2 to 37.6 inches, and rates the bike to carry 350 lb.

The rear hub is a 52V 750W brushless motor. A torque sensor reads how hard you press on the pedals and adds power in proportion, so the bike feels like your own legs on a good day instead of a switch that is either on or off. A thumb throttle is there when you want to stop pedalling.
Five assist levels top out at 28 MPH. The 52V 15.6Ah battery charges in 7 to 9 hours on the 52V 2A charger and is rated for 800 cycles. Cyrusher sells the Roam as Class 2 or 3, so where you can ride at the top end depends on your local rules.


Hydraulic discs on 180mm rotors front and rear, under an oil and spring fork you can adjust to your weight.

A 165mm coil shock rated to 750 lb, tucked under the seat. Swap in Cyrusher’s air shock if you want to tune it.

52V 750W brushless hub driving a Shimano 7 speed, with a torque sensor that adds power as you press harder.

52V 15.6Ah, 811Wh, sealed in the 6061 down tube behind a 21.3 inch standover. Charges in 7 to 9 hours.

Mid mounted LCD with a USB port for your phone, a thumb throttle and hydraulic levers that cut the motor.
| Motor | 52V 750W brushless rear hub |
|---|---|
| Battery | 52V 15.6Ah, 811Wh, inside the frame; 14.6 lb |
| Range | Up to 62 miles, Cyrusher estimate |
| Top speed | 28 MPH in pedal assist level 5; Class 2 or 3 by Cyrusher |
| Modes | Throttle, pedal assist in 5 levels, pedal only |
| Sensor | Torque sensor (Cyrusher also lists cadence) |
| Throttle | Thumb |
| Display | Mid mounted LCD with USB |
| Charger | 52V 2A, CE and UL certified, 7 to 9 hours |
| Battery life | 800 cycles by Cyrusher |
| Frame | 6061 aluminium step thru with internal battery |
| Rider height | 5'7" to 6'7" |
| Standover height | 21.3 in |
| Reach | 18.5 in |
| Saddle height | 35.2 to 37.6 in |
| Handlebar height | 46.1 in |
| Wheelbase | 48.6 in |
| Overall length | 77.6 in |
| Front suspension | Oil and spring fork with adjustment |
| Rear suspension | Coil shock, 165mm, rated 750 lb; 165mm air shock optional |
| Brakes | Hydraulic disc, 180mm rotors, front and rear |
| Drivetrain | Shimano 7 speed, SL-TX50 shifter |
| Crankset | Forged aluminium, 170mm, 52T |
| Chain | Stainless |
| Tires | JILUER 26 x 4 puncture resistant fat |
| Rims | Aluminium alloy |
| Saddle | Sport cushion saddle on a 30.4mm adjustable post |
| Kickstand | 6061 aluminium |
| Payload | 350 lb |
| Weight | 81.6 lb with battery, by Cyrusher |
| Colours | Red, Green, Blue |
| Warranty | 2 years frame, motor and controller; 1 year battery and parts, by Cyrusher |
| In the box | Battery, charger, air pump, assembly tool set |
| Not included | Headlight, fenders and rear rack, sold separately by Cyrusher |
Cyrusher quotes up to 62 miles from the 52V 15.6Ah, 811Wh battery, and that is a best case pedal assist figure. Rider weight, hills, headwind, cold, tire pressure and how much throttle you use all bring it down. Cyrusher suggests a low assist level while you learn the bike and your routes.
Cyrusher lists the Roam as Class 2 or 3, with 28 MPH reached in pedal assist level 5. In most US states that is legal on roads and many bike lanes, but paths and trails set their own limits. Check your state and local rules, especially where Class 3 bikes are kept off multi use paths.
Same 750W motor, battery and suspension in two frames. The Roam steps through at 21.3 inches, seats 35.2 to 37.6 inches up and fits riders 5'7" to 6'7" by Cyrusher. The Rover is the step over, with a saddle from 33.9 to 41.3 inches, for riders 5'5" to 6'3".
One size. Cyrusher fits it to riders from 5'7" to 6'7". The saddle sets from 35.2 to 37.6 inches off the ground, the handlebar sits 46.1 inches up, the wheelbase is 48.6 inches and the bike is 77.6 inches long. Standover is 21.3 inches because the frame steps through.
Mostly. Cyrusher ships the battery, charger, an air pump and an assembly tool set in the box. You fit the front wheel and tighten its axle, thread the left and right pedals on, set the handlebar in the stem and drop the saddle in, then check every bolt. A rear rack, fenders and a headlight are sold separately.
Cyrusher covers the frame, motor and controller for two years and the battery and other parts for one year against manufacturing defects, for the original owner, one replacement per part. Crashes, stunt riding, water damage, modifications and normal wear are excluded. We are an authorized dealer, so it applies.
Six quick questions so the Garage knows how you ride. Then spin the wheel for your code.

