Fat tire & moto
Ariel Rider Kepler
$1,699
Price
118 Nm
Torque
1040 Wh
Battery
98.6 lb
Weight
Ariel Rider Kepler vs Magician Alpha
Two fat tire & moto e-bikes at $1,699–$2,599, every published spec lined up. Nothing here is estimated: a figure the manufacturer does not publish is shown as “—”.
Where they differ
- The Alpha peaks 3060 W higher.
- The Alpha carries 1120 Wh more battery.
- The Kepler costs $900 less.
- The Kepler is 40.4 lb lighter.
- The Alpha makes 22 Nm more torque.
- The Alpha carries 50 lb more total load.
- The Kepler is hardtail (front only); the Alpha is full suspension.
- The Kepler ships as class 2–3; the Alpha ships as out of class.
Every spec, side by side
| Kepler | Alpha | |
|---|---|---|
| Headline | ||
| Price | $1,699 | $2,599 |
| Category | Fat tire & moto | Fat tire & moto |
| Price per Wh | $1.63 per Wh | $1.20 per Wh |
| Model year | 2026 | 2026 |
| Motor | ||
| Torque | 118 Nm | 140 Nm |
| Motor power | 750 W | 3000 W |
| Peak power | 1940 W | 5000 W |
| Drive | Rear hub | Rear hub |
| Motor make | Ariel Rider | Bafang 72V |
| Sensor | Torque + cadence | Torque + cadence |
| Battery & range | ||
| Battery | 1040 Wh | 2160 Wh |
| Voltage | 52V | 72V |
| Capacity | 20 Ah | 30 Ah |
| Cells | Samsung 21700 | Samsung |
| Removable battery | Yes | Yes |
| Range (claim) | 75 mi | — |
| Range as stated | Up to 75 miles | — |
| Est. real range | 42 mi | 86 mi |
| Estimate assumes | 25 Wh per mile | 25 Wh per mile |
| Weight & capacity | ||
| Weight | 98.6 lb | 139 lb |
| Max load | 400 lb | 450 lb |
| Class & speed | ||
| Ships as | Class 2: throttle, assist to 20 mph | — |
| Unlocks to | Class 3 | — |
| Class | Class 2–3 | Out of class |
| Beyond the class system | — | Beyond the 3-class system (over 750W) |
| Throttle | Yes | Yes |
| Top assisted speed | 28 mph | — |
| Build | ||
| Gears | 8-speed | 7-speed |
| Drivetrain | Shimano Altus (13-32T) | Shimano Acera |
| Brakes | Hydraulic disc | Hydraulic disc |
| Front rotor | 203 mm | 203 mm |
| Rear rotor | 203 mm | 203 mm |
| Suspension | Hardtail (front only) | Full suspension |
| Fork travel | — | 120 mm |
| Rear travel | None | — |
| Front suspension | Yes | Yes |
| Suspension seatpost | — | No |
| Tires | 24 x 4.0 | — |
| Display | Large full-colour, Bluetooth, USB-C | Bafang |
| Sizes | One size | — |
| Step-through option | No | — |
| Included | ||
| Lights | Yes | — |
| Safety | — | UL 2271 |
| Safety certification | — | UL 2271: battery only |
| As the maker states it | "UL Safety Certified" stated without naming the standard | UL2271 certified battery pack |
| Warranty | — | 1 yr |
| Warranty terms | — | One year against manufacturing defects; frames 3 years (brand policy) |
Specs transcribed from arielrider.com on 2026-09-20 and magicianebikes.com on 2026-09-20. Manufacturers revise specs without notice: confirm before buying.