E-Bike Conversion Kits
TRB hub motor conversion kits run from 1500W to 5000W, built for riders converting a standard bicycle or upgrading an existing e-bike. Each kit pairs a hub motor with the controller and hardware needed to run it. The exact contents are listed on each product page.
Picking a Power Level
- 1500W — commuting and flat-terrain riding. Enough for hills without the weight and heat of a big motor.
- 2000W–3000W — the practical middle ground. Carries cargo, handles sustained climbs, and pulls a rider plus gear without sagging.
- 5000W — high-power off-road and private-land builds. Requires a battery pack with the discharge rate to match.
More power only helps if the battery can supply it. A 5000W motor on a pack rated for 30A continuous will trip the BMS under load. Match the kit to your pack's continuous discharge rating, or browse battery packs first and let the pack decide the motor.
Before You Order, Check
- Wheel size — kits are built for specific wheel sizes. Measure your rim, not your tyre.
- Dropout spacing — the motor hub must fit your frame's dropout width.
- Controller voltage — the controller must match the battery voltage you plan to run.
- Brake and throttle compatibility — check what your current levers and throttle connect to.
A torque arm is strongly recommended on any hub motor above 1000W. Recycled dropouts and aluminium frames are the usual failure point.
Riding Legally
Power limits for road-legal e-bikes vary by country, state and even by path. High-output kits are generally intended for off-road and private-land use. Check the rules that apply where you ride before fitting a high-power kit to a bike you intend to use on public roads.
Warranty and Delivery
Kits are covered by our 12-month warranty. Orders leave the workshop within 10 days and we ship worldwide with tracking — roughly one month to the United States and Australia.
Before you order
Kit wattage alone does not tell you whether a build will work. Confirm controller voltage and current, connectors, wheel size and dropout type, and the frame space you have. Our battery voltage comparison explains what 48V, 52V and 72V each demand, and the frame measuring guide shows what to measure. A torque arm is strongly recommended from about 1,000W upward. Because we do not accept returns, send your measurements first. Warranty terms are on the warranty page.
