Fat tire & moto
Bakcou Flatlander SD
$3,899
Price
85 Nm
Torque
1200 Wh
Battery
80 lb
Weight
Bakcou Flatlander SD vs Super73 Z Adventure Series
Two fat tire & moto e-bikes at $2,795–$3,899, every published spec lined up. Nothing here is estimated: a figure the manufacturer does not publish is shown as “—”.
Where they differ
- The Flatlander SD carries 720 Wh more battery.
- The Flatlander SD claims 15 more miles of range.
- The Z Adventure Series costs $1104 less.
- The Z Adventure Series is 7 lb lighter.
Every spec, side by side
| Flatlander SD | Z Adventure Series | |
|---|---|---|
| Headline | ||
| Price | $3,899 | $2,795 |
| Category | Fat tire & moto | Fat tire & moto |
| Price per Wh | $3.25 per Wh | $5.82 per Wh |
| Model year | 2026 | 2026 |
| Motor | ||
| Torque | 85 Nm | — |
| Motor power | 750 W | 500 W |
| Drive | Rear hub | Rear hub |
| Motor make | Bafang RMG062A | Super73 |
| Drive system | Bafang | — |
| Sensor | Torque | Torque |
| Battery & range | ||
| Battery | 1200 Wh | 480 Wh |
| Voltage | — | 48V |
| Capacity | — | 10 Ah |
| Removable battery | Yes | Yes |
| Range (claim) | 50 mi | 35 mi |
| Range as stated | About 50 miles, up to 80 with the second battery | 25 to 35 miles at 20 mph on throttle only |
| Est. real range | 48 mi | 24 mi |
| Estimate assumes | 25 Wh per mile | 20 Wh per mile |
| Weight & capacity | ||
| Weight | 80 lb | 73 lb |
| Max load | — | 325 lb |
| Class & speed | ||
| Ships as | — | Class 2: throttle, assist to 20 mph |
| Unlocks to | — | Class 2 |
| Class | — | Class 2 |
| Throttle | Yes | Yes |
| Top assisted speed | — | 20 mph |
| Build | ||
| Gears | Single speed | 8-speed |
| Drivetrain | Single speed, two-speed internal motor gearing | Super73 |
| Brakes | Hydraulic disc | Hydraulic disc |
| Front rotor | 203 mm | — |
| Rear rotor | 203 mm | — |
| Suspension | Hardtail (front only) | Hardtail (front only) |
| Fork travel | 130 mm | — |
| Rear travel | None | None |
| Front suspension | Yes | Yes |
| Tires | 26 x 4.0 | 20 x 4.5 front, 20 x 5.0 rear |
| Display | Integrated colour stem display | — |
| Frame | 6061 aluminum | Aluminium |
| Sizes | 24 inch and 26 inch wheel options | — |
| Step-through option | No | No |
| Included | ||
| Lights | — | Yes |
| Rack | Yes | — |
| Safety | — | UL 2271 |
| Safety certification | — | UL 2271: battery only |
| As the maker states it | No UL standard named on the product page | Batteries described as UL 2271 compliant (compliant, not certified) |
| Warranty | 1 yr | — |
Specs transcribed from bakcou.com on 09/20/2026 and super73.com on 09/22/2026. Manufacturers revise specs without notice: confirm before buying.