Super73 ZX SE
Class 2
Legal class
20 mph
Top speed
720 Wh
Battery
45 mi
Claimed range
64 lb
Weight
325 lb
Max load
The ZX with 720Wh instead of 480Wh, hydraulic brakes instead of mechanical, and an adjustable fork, for $600 over the plain ZX. It is the efficiency pick of the range: 35-45 miles quoted at just 64 lb, where the A-Series bikes need more battery to go half as far. Keeps the ZX cadence sensor, so assist arrives in full as soon as the cranks move. Brakes are Tektro, 2 piston, hydraulic; suspension is front adjustable; seat height 31 inches; charge time 7-8 hrs; horn not fitted. SENSOR SOURCE: Super73 publish the sensor type on no product page. Their own guide at https://eu.super73.com/blogs/guides/cadence-and-torque-sensor says "The SUPER73 Z-MIAMI, ZG, and ZX are equipped with a cadence sensor. The rest of the SUPER73 models have a torque sensors." Super73 describe the pack as "UL2271 Compliant", which is a battery claim and a weaker word than certified; there is no UL 2849 system claim.
Full specification
| Headline | |
| Price | $2,995 |
|---|---|
| Category | Fat tire & moto |
| Price per Wh | $4.16 per Wh |
| Model year | 2026 |
| Motor | |
| Motor power | 500 W |
| Drive | Rear hub |
| Motor make | Super73 |
| Sensor | Cadence |
| Battery & range | |
| Battery | 720 Wh |
| Voltage | 48V |
| Capacity | 15 Ah |
| Removable battery | Yes |
| Range (claim) | 45 mi |
| Range as stated | 35 to 45 miles at 20 mph on throttle only |
| Est. real range | 36 mi |
| Estimate assumes | 20 Wh per mile |
| Weight & capacity | |
| Weight | 64 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 |
| Top assisted speed | 20 mph |
| Build | |
| Gears | Single speed |
| Drivetrain | Single speed |
| Brakes | Hydraulic disc |
| Suspension | Hardtail (front only) |
| Rear travel | None |
| Front suspension | Yes |
| Tires | 20 x 4.5 front, 20 x 5.0 rear |
| Frame | Aluminium |
| Step-through option | No |
| Included | |
| Lights | Yes |
| Safety | UL 2271 |
| Safety certification | UL 2271: battery only |
| As the maker states it | Batteries described as UL 2271 compliant (compliant, not certified) |
Safety certification: UL 2271: battery only. Super73 states: “Batteries described as UL 2271 compliant (compliant, not certified)” (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 super73.com on 09/22/2026. Fields the manufacturer does not publish are shown as “—” rather than estimated. Manufacturers revise specs without notice: confirm before buying.
Compared with
Head to head against the fat tire & moto bikes closest to it on price.