Fat tire & moto
Super73 B1G
$2,595
Price
520 Wh
Battery
90 lb
Weight
Super73 B1G vs Super73 S2 SE
Two fat tire & moto e-bikes at $2,595–$3,145, every published spec lined up. Nothing here is estimated: a figure the manufacturer does not publish is shown as “—”.
Where they differ
- The S2 SE claims 25 more miles of range.
- The S2 SE carries 200 Wh more battery.
- The S2 SE carries 75 lb more total load.
- The S2 SE is 19 lb lighter.
- The B1G costs $550 less.
- The B1G is rigid; the S2 SE is hardtail (front only).
Every spec, side by side
| B1G | S2 SE | |
|---|---|---|
| Headline | ||
| Price | $2,595 | $3,145 |
| Category | Fat tire & moto | Fat tire & moto |
| Price per Wh | $4.99 per Wh | $4.37 per Wh |
| Model year | 2026 | 2026 |
| Motor | ||
| Motor power | 500 W | 750 W |
| Drive | Rear hub | Rear hub |
| Motor make | Super73 | Super73 |
| Sensor | Torque | Torque |
| Battery & range | ||
| Battery | 520 Wh | 720 Wh |
| Voltage | 52V | 48V |
| Capacity | 10 Ah | 15 Ah |
| Removable battery | Yes | Yes |
| Range (claim) | 20 mi | 45 mi |
| Range as stated | 20 miles at 20 mph on throttle only | 35 to 45 miles at 20 mph on throttle only |
| Est. real range | 21 mi | 36 mi |
| Estimate assumes | 25 Wh per mile | 20 Wh per mile |
| Weight & capacity | ||
| Weight | 90 lb | 71 lb |
| Max load | 250 lb | 325 lb |
| Class & speed | ||
| Ships as | Class 2: throttle, assist to 20 mph | Class 2: throttle, assist to 20 mph |
| Unlocks to | Class 2 | Class 2 |
| Class | Class 2 | Class 2 |
| Throttle | Yes | Yes |
| Top assisted speed | 20 mph | 20 mph |
| Build | ||
| Gears | Single speed | Single speed |
| Drivetrain | Single speed | Single speed |
| Brakes | Hydraulic disc | Hydraulic disc |
| Suspension | Rigid | Hardtail (front only) |
| Fork travel | Rigid | — |
| Rear travel | None | None |
| Front suspension | No | Yes |
| Tires | 20 x 4.5 front, 20 x 5.0 rear | 20 x 4.5 front, 20 x 5.0 rear |
| Frame | Aluminium | Aluminium |
| Step-through option | No | No |
| Included | ||
| Lights | Yes | Yes |
| Safety | UL 2271 | UL 2271 |
| Safety certification | UL 2271: battery only | UL 2271: battery only |
| As the maker states it | Batteries described as UL 2271 compliant (compliant, not certified) | Batteries described as UL 2271 compliant (compliant, not certified) |
Specs transcribed from super73.com on 09/22/2026 and super73.com on 09/22/2026. Manufacturers revise specs without notice: confirm before buying.