Fat tire & moto
Rad Power Bikes RadExpand 5 Plus
$1,899
Price
720 Wh
Battery
72.5 lb
Weight
Rad Power Bikes RadExpand 5 Plus vs Super73 Z Miami
Two fat tire & moto e-bikes at $1,899–$2,195, every published spec lined up. Nothing here is estimated: a figure the manufacturer does not publish is shown as “—”.
Where they differ
- The RadExpand 5 Plus claims 25 more miles of range.
- The RadExpand 5 Plus carries 240 Wh more battery.
- The Z Miami is 13.5 lb lighter.
- The RadExpand 5 Plus costs $296 less.
- The RadExpand 5 Plus uses a torque sensor; the Z Miami uses a cadence sensor.
- The RadExpand 5 Plus is hardtail (front only); the Z Miami is rigid.
Every spec, side by side
| RadExpand 5 Plus | Z Miami | |
|---|---|---|
| Headline | ||
| Price | $1,899 | $2,195 |
| Category | Fat tire & moto | Fat tire & moto |
| Price per Wh | $2.64 per Wh | $4.57 per Wh |
| Model year | 2026 | 2026 |
| Motor | ||
| Motor power | 750 W | 500 W |
| Drive | Rear hub | Rear hub |
| Motor make | Rad | Super73 |
| Sensor | Torque | Cadence |
| Battery & range | ||
| Battery | 720 Wh | 480 Wh |
| Voltage | — | 48V |
| Capacity | 15 Ah | 10 Ah |
| Cells | Samsung 50GB or LG M50LT | — |
| Removable battery | Yes | Yes |
| Range (claim) | 60 mi | 35 mi |
| Range as stated | 60+ miles | 25 to 35 miles at 20 mph on throttle only |
| Est. real range | 36 mi | 30 mi |
| Estimate assumes | 20 Wh per mile | 16 Wh per mile |
| Weight & capacity | ||
| Weight | 72.5 lb | 59 lb |
| Max load | 315 lb | 325 lb |
| Rack capacity | 59 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 | 7-speed | Single speed |
| Drivetrain | Shimano | Single speed |
| Brakes | Hydraulic disc | Mechanical disc |
| Front rotor | 180 mm | — |
| Rear rotor | 180 mm | — |
| Suspension | Hardtail (front only) | Rigid |
| Fork travel | 50 mm | Rigid |
| Rear travel | None | None |
| Front suspension | Yes | No |
| Suspension seatpost | No | — |
| Tires | 20 x 4.0 CST | 20 x 4.0 front and rear |
| Display | Rad colour display | — |
| Frame | Aluminium | Aluminium |
| Sizes | One size, folding | — |
| Step-through option | Yes | No |
| Included | ||
| Lights | Yes | Yes |
| Fenders | Yes | — |
| Rack | Yes | — |
| Kickstand | Yes | — |
| Safety | UL 2849* | UL 2271 |
| Safety certification | UL 2849: most models, confirm this one | UL 2271: battery only |
| As the maker states it | "UL Certified to UL 2849 and UL 2271" on individual product pages, with the lineup-wide claim hedged as "All Rad ebikes are either UL Certified or tested by ACT to comply with UL 2849" | Batteries described as UL 2271 compliant (compliant, not certified) |
| Warranty | 2 yr | — |
| Warranty terms | Two year limited warranty; battery 300 recharge cycles or 2 years, whichever comes first (brand policy) | — |
Specs transcribed from www.radpowerbikes.com on 09/20/2026 and super73.com on 09/22/2026. Manufacturers revise specs without notice: confirm before buying.