Used value
What's a used Amp'd Bros ACE-X Demon Series 4 Dual Motor (Off-Road) worth?
In good condition, a Amp'd Bros ACE-X Demon Series 4 Dual Motor (Off-Road) bought in 2024 sells for about $1,600–$1,900 privately, or around $1,200 as a trade-in. New, it costs $4,290 today at Amp'd Bros.

Lowest new price
$4,290
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Fair private-sale price
$1,600–$1,900
List it at about $1,750. A store trade-in is more like $1,200.
41% of the lowest new price we track today ($4,290) · about 2.3 years old
What changed the number
- Nothing yet: good condition, original battery, typical use.
An estimate, not an offer. How we work it out is explained here.
By year
Used Amp'd Bros ACE-X Demon Series 4 Dual Motor (Off-Road) values by year bought
Good condition, original battery with most of its range, typical distance. Use the calculator above for your exact bike.
| Bought in | Private sale | Trade-in |
|---|---|---|
| 2026 | $2,400–$2,850 | $1,800 |
| 2025 | $1,950–$2,300 | $1,450 |
| 2024 | $1,600–$1,900 | $1,200 |
| 2023 | $1,350–$1,600 | $1,000 |
| 2022 | $1,100–$1,300 | $820 |
| 2021 | $880–$1,100 | $670 |
| 2020 | $730–$910 | $550 |
| 2019 | $620–$780 | $480 |
| 2018 | $550–$690 | $420 |
Worked out 16 Oct 2026 from the lowest in-stock new price we track ($4,290), using our curve for a hub-drive e-bike. It is not road-legal as a bicycle, which shrinks the pool of buyers, so values are 10% lower. How we value used bikes.
Buying one used
What to check on a used Amp'd Bros ACE-X Demon Series 4 Dual Motor (Off-Road)
- Battery. New, it has a 1300 Wh battery with a claimed 100 km range. Ask how far it goes on a charge now, and how old the battery is.
- Serial number. Check the frame number with a stolen-bike register before you pay, and get a receipt or a written bill of sale.
- Is it still legal? This model is not road-legal as a bicycle. Compliance details.
- Compare with new. At $4,290 new, a used one should be clearly cheaper. A demo unit with a store warranty can be the better buy.
Similar e-bikes
Value a similar model
Valuations are estimates to help you set or judge a price, not an offer to buy. A trade-in is usually about 68% of the private-sale midpoint.