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 Earth T-REX RINO SP Fat $3,990 Full specs and where to buy |  AMPD Bros ACE Adventure $3,290 Full specs and where to buy | ||
|---|---|---|---|
| Who it suits | |||
| Best suited to | Riders who want a mid-drive fat bike for sand, fire trails and loose gravel, from an Australian brand with its own service base. | Riders who want the comfortable, touring-focused version of the ACE for coastal paths, gravel and weekends away, with room for a passenger seat. | |
| Main trade-off | The 600Wh battery is modest for a heavy fat bike ridden hard in sand, and Earth does not publish the nominal wattage. | At around 35kg it is a heavy bike to lift onto a car rack or up stairs. | |
| Overview | |||
| Price | $3,990 | $3,290 (sale, RRP $3,490)Best | |
| Price basis | ride-away (incl GST), 100Nm version | sale price at ampdbros.com.au for the road-compliant build | |
| Availability | In stock, checked 8 Nov | In stock, checked 8 Nov | |
| Category | Fat Tyre | Fat Tyre | |
| Model year | 2024 | 2026 | |
| Drive and power | |||
| Motor | EARTH ATM 48V mid-drive | Bafang rear hub | |
| Drive type | Mid drive | Hub drive | |
| Torque | 100 NmBest | 80 Nm | |
| Battery | 600 Wh | 960 WhBest | |
| Range | 70 km | 80 kmBest | |
| Top assist | 25 km/h | 25 km/h | |
| Frame and ride | |||
| Weight | 26 kgBest | 35 kg | |
| Drivetrain | Shimano Alivio 9-speed | Shimano 7-speed | |
| Brakes | Shimano or Tektro hydraulic disc | Hydraulic disc, 203mm rotors | |
| Frame | Aluminium fat-tyre hardtail | Aluminium moto-style fat-tyre, step-over or step-through | |
| Wheels | 26 x 4.0 Maxxis Mammoth EXO | 20 x 4.0 Maxxis all-terrain | |
| Road-legal | |||
| Compliance | claimed by brand | claimed by brand | |
| Rated motor | 250 W | 250 W | |
| Assist cutoff | 25 km/h | 25 km/h | |
| Throttle | No | No | |