Ariel Rider Kepler
Class 2–3
Legal class
28 mph
Top speed
118 Nm
Torque
1040 Wh
Battery
75 mi
Claimed range
98.6 lb
Weight
400 lb
Max load
118 Nm and 1,940W of peak output from a 52V 1,040Wh pack, while still staying inside the 750W nominal limit. Four-piston brakes with 203mm rotors front and rear, turn signals, high and low beams and a horn. The weight is the cost: 98.6 lb before accessories, the heaviest in-class bike here. Switchable torque or cadence assist.
Full specification
| Headline | |
| Price | $1,699 |
|---|---|
| Category | Fat tire & moto |
| Price per Wh | $1.63 per Wh |
| Model year | 2026 |
| Motor | |
| Torque | 118 Nm |
| Motor power | 750 W |
| Peak power | 1940 W |
| Drive | Rear hub |
| Motor make | Ariel Rider |
| Sensor | Torque + cadence |
| Battery & range | |
| Battery | 1040 Wh |
| Voltage | 52V |
| Capacity | 20 Ah |
| Cells | Samsung 21700 |
| Removable battery | Yes |
| Range (claim) | 75 mi |
| Range as stated | Up to 75 miles |
| Est. real range | 42 mi |
| Estimate assumes | 25 Wh per mile |
| Weight & capacity | |
| Weight | 98.6 lb |
| Max load | 400 lb |
| Class & speed | |
| Ships as | Class 2: throttle, assist to 20 mph |
| Unlocks to | Class 3 |
| Class | Class 2–3 |
| Throttle | Yes |
| Top assisted speed | 28 mph |
| Build | |
| Gears | 8-speed |
| Drivetrain | Shimano Altus (13-32T) |
| Brakes | Hydraulic disc |
| Front rotor | 203 mm |
| Rear rotor | 203 mm |
| Suspension | Hardtail (front only) |
| Rear travel | None |
| Front suspension | Yes |
| Tires | 24 x 4.0 |
| Display | Large full-colour, Bluetooth, USB-C |
| Sizes | One size |
| Step-through option | No |
| Included | |
| Lights | Yes |
| As the maker states it | "UL Safety Certified" stated without naming the standard |
Safety certification: not published. Ariel Rider states: “"UL Safety Certified" stated without naming the standard” (source). That is the manufacturer’s own claim, not something we verified, you can check a specific model in UL’s Product iQ database. Why this matters.
Specs transcribed from arielrider.com on 2026-09-20. Fields the manufacturer does not publish are shown as “—” rather than estimated. Manufacturers revise specs without notice: confirm before buying.