ACE-X Demon S5
This exceeds the 250W and 25 km/h pedelec rules and is not road-legal in Australia. Closed-course and private land only.
Is it for you?
Best suited to
Riders with private land, farms or sanctioned tracks who want the biggest, most capable ACE with all-wheel drive on sand and loose ground.
Standout strength
Selectable front, rear or all-wheel drive from two Bafang hub motors, a 52V 25Ah (1,300Wh) battery, dual suspension and 203mm 4-piston brakes.
The main compromise
AMPD certifies it off-road only, so it cannot legally be ridden on Australian roads or paths.
Consider something else if
You want to ride on roads or paths. The ACE PRO has the same 95Nm torque and dual suspension in a road-compliant build.
Check before you buy
Check the backorder timing, and be clear on where you will ride it. On public roads or paths it would be treated as an unregistered motor vehicle.
Full specification
Drive and power
Frame and ride
Australian compliance
This exceeds the 250W and 25 km/h pedelec rules and is not road-legal in Australia. Closed-course and private land only.
ACE-X Demon S5 vs ACE PRO
| AMPD Bros ACE-X Demon S5 | AMPD Bros ACE PRO | |
|---|---|---|
| Price | $4,990 | $3,990 |
| Motor | Dual Bafang hub motors, AWD, hub drive | Bafang rear hub, hub drive |
| Torque | 95 Nm | 95 Nm |
| Battery | 1,300 Wh | 1,200 Wh |
| Claimed range | 100 km | 100 km |
| Weight | TBC | 40 kg |
| Frame | Moto-style aluminium, dual suspension, two-up seat, 180kg max load | Moto-style aluminium, dual suspension, 180kg payload rating |
| Wheels | 20 x 4.0 fat | 20 x 4.0 fat |
| Category | Moped | Fat Tyre |
| Availability | Pre-order | In stock |
Choose the ACE-X Demon S5 if
its battery is 100 Wh bigger, so you charge less often on long rides.
Choose the ACE PRO if
it costs $1,000 less; it is listed as in stock now.
How you would ride it
AMPD Bros
Designed in Queensland, AMPD is the Australian-grown brand that built its name on fat-tyre adventure bikes and now claims best-selling status in its category every year since 2019.
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Common questions
How much does the AMPD Bros ACE-X Demon S5 cost in Australia?
The AMPD Bros ACE-X Demon S5 is listed at $4,990 (Price at ampdbros.com.au (off-road only model)). eBikeFinder checks pricing against manufacturer and distributor information, and prices can change with sales and stock. This price was last checked on 2026-09-24.
Is the AMPD Bros ACE-X Demon S5 road legal in Australia?
Not as a bicycle. The AMPD Bros ACE-X Demon S5 sits outside the 250W pedal-assist standard (through higher power or a throttle that drives it beyond walking pace), so in Australia it is treated as a motor vehicle. That means it is for private property or off-road use, not public roads or shared paths, unless registered.
What is the range of the AMPD Bros ACE-X Demon S5?
The AMPD Bros ACE-X Demon S5 has a claimed range of about 100 km from its 1300Wh battery. Real-world range is usually lower than the claim, since it depends on assist level, rider weight, terrain and wind.
What motor does the AMPD Bros ACE-X Demon S5 have?
The AMPD Bros ACE-X Demon S5 uses a Dual Bafang hub motors, AWD motor, in a rear hub position, producing 95Nm of torque.
Who sells and backs the AMPD Bros ACE-X Demon S5 in Australia?
The AMPD Bros range is distributed in Australia by AMPD Bros (Gold Coast, QLD). It comes with a 2 years frame, 2 years motor and battery warranty. Buying from a brand with real Australian support matters most when something needs a warranty claim or a service.