AMPD Bros 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.
AMPD Bros ACE-X Demon S5 (2026) at a glance
The ACE-X Demon S5 is AMPD Bros' all-wheel-drive flagship: two Bafang hub motors rated at 1,000W continuous, 95Nm, a 52V 25Ah (1,300Wh) battery, dual suspension, 203mm 4-piston hydraulic brakes and a two-up seat on 20 x 4.0 fat tyres. AMPD certifies it Off Road Only, so it is for private property, not Australian roads or paths.
The AMPD Bros ACE-X Demon S5 is an electric off-road motorbike sold in Australia at $4,990 (price checked 8 Nov 2026). It pairs a Dual Bafang hub motors, AWD hub drive motor with 95Nm of torque (advertised), a 1,300Wh battery rated for up to 100km, 20 x 4.0 fat wheels, and weighs 60kg. It sits outside Australia's pedal-assist e-bike rules as sold. Check registration and where you can legally ride in your state before buying.
Also sold or searched as: ACE Demon, AMPD Demon S5.
Is it for you?
We have not ridden this bike. This read is based on the spec sheet and Australian seller information, not a test ride.
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-X Demon Series 4
| AMPD Bros ACE-X Demon S5 | AMPD Bros ACE-X Demon Series 4 | |
|---|---|---|
| Model year | 2026 | 2025 |
| Price | $4,990 | $3,990 |
| Motor | Dual Bafang hub motors, AWD, hub drive | Dual Bafang hub motors, AWD, hub drive |
| Torque | 95 Nm | 95 Nm |
| Battery | 1,300 Wh | 1,300 Wh |
| Claimed range | 100 km | 100 km |
| Weight | 60 kg | TBC |
| Frame | Moto-style aluminium, dual suspension, two-up seat, 180kg max load | Moto-style aluminium step-over, dual suspension, 180kg max load |
| Wheels | 20 x 4.0 fat | 20-inch Huntsman all-terrain |
| Category | Moped | Moped |
| Availability | In stock | In stock |
Choose the ACE-X Demon S5 if
you want its 20 x 4.0 fat wheel set.
Choose the ACE-X Demon Series 4 if
it costs $1,000 less; you want its 20-inch Huntsman all-terrain wheel set.
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 8 Nov 2026.
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. The torque figure is as advertised by the seller and may be measured at the wheel, so it is not directly comparable with e-bike motor torque.
How much does the AMPD Bros ACE-X Demon S5 weigh?
The AMPD Bros ACE-X Demon S5 weighs about 60 kg as listed. Plan transport around a trailer, ramp or van.
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). Warranty terms: 2 years on Ampd Bros adult e-bikes with no kilometre limit, 1 year on kids e-bikes; T&Cs apply. Checked 25 October 2026. Buying from a brand with real Australian support matters most when something needs a warranty claim or a service.