72V 4000W Ebike Kit with LG Battery — Off Road
Transform your mountain bike into a high-powered off-road machine with this complete 72V 4000W ebike kit. CE-approved and built for off-road performance, it delivers a top speed of 55–60mph with strong torque (4000W peak), smooth throttle response, and a complete set of components ready to fit on any compatible city bike or mountain bike frame.
Note: Our display can be set to 15.5mph / 250W speed limit for road-legal use.
What's Included
- Motor: 72V 4000W brushless rear wheel hub motor (135mm dropout width, single speed freewheel)
- Wheel: size 26", 27.5" or 29" MTX39 rim with spokes, assembled
- Controller: 72V 80A controller with controller bag
- Display: LCD UKC1 display
- Throttle: Surron-style black grip throttle
- Brake levers: Wuxing electric brake levers with disc brake compatibility
- Torque arm: x1 torque arm included
- PAS: 1:1 8-magnet pedal assist sensor
- Battery (optional): 72V 30Ah Samsung/LG cells with charging adapter (5A charger), waterproof case
- Manual: Instruction book and cable ties
Full Specifications
| Specification | Details |
|---|---|
| Voltage | 72V |
| Motor Power | 4000W brushless hub motor (4000W peak) |
| Top Speed | 55–60mph (off road) |
| Controller | 72V 80A |
| Battery (optional) | 72V 30Ah LG/Samsung cells, waterproof |
| Wheel Size | 26", 27.5", 29" (MTX39 rim) |
| Dropout Width | 135mm |
| Brakes | Disc brake compatible, Wuxing electric levers |
| Torque Arm | Included |
| Display | LCD UKC1 |
| Use | Off-road (road-legal mode available) |
Frequently Asked Questions
-
How fast can a 72V 4000W ebike kit go?
The top speed is 55–60mph depending on riding conditions, rider weight, and terrain. Designed for off-road use with 4000W peak power. -
Can it be set to road-legal speed?
Yes — the LCD display can be configured to limit speed to 15.5mph (25km/h) and power to 250W for road-legal use in the UK. -
What wheel size is compatible?
The kit is available for wheel size 26", 27.5", and 29" using the MTX39 rim. -
Does the kit include a torque arm?
Yes — a torque arm is included to secure the rear wheel motor safely to your frame. -
Does it include charging equipment?
Yes — the optional battery comes with a 5A charger for convenient charging at home. -
What is the dropout width?
The motor has a 135mm dropout width, compatible with most standard mountain bike frames.
⚠️ Off-Road Use Only: Kits over 250W are prohibited from use on public roads in the UK. For private property or off-road use only.
All items ordered online will be processed within 1-2 days (except on weekend)will be delivered for FREE, in 3 to 5 working days to UK Mainland.
RETURNS
All E-bike can be returned within 7 days of delivery (Your items will be free from operation fee, while shipping fee will still be included). To return an e-bike that is not defective or damaged.
From our customers
Rugged & Durable
1 year guarantee
You can confidently push our bikes to the limit knowing that we provide a no-hassle return on any issues encountered during our standard 1 year warrantee
Fast shipping
All our ebikes ship within 2 business days delivery may vary but average around 3 to 7 days in United Kingdom