
The Cyrusher Aura is a step through fat tire e-bike for trails and the city: a 52V 750W rear hub motor with 1050W peak and 95 N.m, a sensor you can switch between torque and cadence, and a 52V 15Ah battery of Samsung 21700 cells, 780Wh, sealed inside the down tube. Cyrusher rates it at 28 MPH and up to 60 miles.
A suspension fork with a lockout carries the front over gravel, sand and broken pavement on 26 x 4 puncture resistant fat tires. Hydraulic disc brakes on 180mm rotors stop it, a Shimano 7 speed covers the climbs and a thumb throttle is there when you want to stop pedalling. It weighs 66 lb with the battery and carries 350 lb.
One size fits riders 5'1" to 6'4" over a 19.5 inch step. Want the same bike as a step over? That is the Zenith.
Built to be lived with
An aluminium step through frame with the battery inside, a suspension fork with lockout, hydraulic disc brakes on 180mm rotors, a Shimano 7 speed drivetrain and 26 x 4 puncture resistant fat tires.
A 3.7 inch colour LCD, thumb throttle, headlight and rear light all come on the bike, with a toolkit box and keys in the box. The electrical system is UL 2849 and UL 2271 certified. Frame, motor and controller are covered for two years, battery and parts for one.
The Aura is the step through version of the Zenith: an aluminium frame that drops to 19.5 inches at the step, with the 52V battery sealed inside the down tube, so you walk into it in work clothes or with a loaded rack. It is a hardtail. A suspension fork with a lockout for pavement handles the front, and 26 x 4 puncture resistant fat tires do the rest over gravel, sand and broken road.
The saddle sets from 33.7 to 41.7 inches and Cyrusher fits one size to riders from 5'1" to 6'4", rated to carry 350 lb. At 66 lb with the battery it is the lightest fat tire Cyrusher we sell, nearly 10 lb under the Zenith.

The rear hub is a 52V 750W brushless motor, 1050W peak, with 95 N.m of torque. Most e-bikes give you one kind of sensor. The Aura gives you both: torque mode reads how hard you press and adds power in proportion, cadence mode adds a set amount as soon as the pedals turn. You switch between them on the display.
Five assist levels top out at 28 MPH. The 52V 15Ah battery uses Samsung 21700 cells, charges in 7 to 8 hours on the 2A charger and comes out of the frame to charge indoors. Cyrusher sells the Aura as Class 2 or 3, so where you can ride at the top end depends on your local rules.


52V 750W brushless hub with 95 N.m driving a Shimano 7 speed, in torque or cadence mode at the touch of a button.

A bright, waterproof, anti glare headlight on the fork crown, so you see the path and get seen.

A suspension fork with a lockout for pavement, over a 26 x 4 puncture resistant fat tire that soaks up the rest.

Hydraulic discs on 180mm rotors front and rear, with levers that cut the motor.

52V 15Ah of Samsung 21700 cells, 780Wh, sealed in the down tube and removable to charge off the bike. 7 to 8 hours on the 2A charger.

Shimano 7 speed shifter, a thumb throttle and a bell, all on the right grip.
| Motor | 52V 750W brushless rear hub, 1050W peak, 95 N.m |
|---|---|
| Battery | 52V 15Ah, 780Wh, Samsung 21700 cells, inside the frame |
| Range | Up to 60 miles, Cyrusher estimate; 35 or more on throttle alone |
| Top speed | 28 MPH in pedal assist level 5; Class 2 or 3 by Cyrusher |
| Sensor | Torque and cadence, switchable |
| Throttle | Thumb |
| Display | 3.7 inch colour LCD |
| Lights | Headlight, rear light |
| Charger | 2A, 7 to 8 hours |
| Water resistance | IPX5, some parts IPX7, by Cyrusher |
| Frame | Aluminium step through with internal battery |
| Rider height | 5'1" to 6'4" |
| Standover height | 19.5 in |
| Reach | 16.9 in |
| Stack | 24.6 in |
| Top tube | 26.5 in |
| Head tube angle | 68.5 degrees |
| Saddle height | 33.7 to 41.7 in |
| Wheelbase | 47.8 in |
| Chainstay | 19.7 in |
| Front suspension | Suspension fork with lockout |
| Rear suspension | None, hardtail |
| Brakes | Hydraulic disc, 180mm rotors, front and rear |
| Drivetrain | Shimano 7 speed |
| Tires | 26 x 4 puncture resistant fat |
| Payload | 350 lb |
| Weight | 66 lb with battery, by Cyrusher |
| Colours | Blue, Black, White |
| Certification | UL 2849 and UL 2271, SGS certified |
| Warranty | 2 years frame, motor and controller; 1 year battery and parts, by Cyrusher |
| In the box | Bike, charger, toolkit box, keys, user manual |
| Not included | Fenders and rear rack, sold as a set by Cyrusher |
Cyrusher quotes up to 60 miles from the 52V 15Ah, 780Wh 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. Cadence mode at a high assist level uses more than torque mode does.
Cyrusher lists the Aura 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 motor, battery, brakes and tires in two frames. The Aura steps through at 19.5 inches with a saddle from 33.7 to 41.7 inches and weighs 66 lb. The Zenith is the step over, with a 30 inch standover, a saddle from 32.3 to 40.4 inches and 75.6 lb, for riders who want a stiffer diamond frame.
A torque sensor reads how hard you press and adds power in proportion, so the bike feels natural and uses less battery. A cadence sensor adds a set amount of power as soon as the pedals turn, which feels more like a throttle. The Aura has both and you switch between them on the display.
Cyrusher ships the bike, the charger, a toolkit box, the keys and the user manual, and posts an assembly video. You fit the front wheel, handlebar, pedals and saddle, then check every bolt. Fenders and a rear rack are sold separately as a set.
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.

