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Free UK Delivery
Easy installation
1-year warranty
It’s the kit that built KirbEbike’s reputation: enough power to flatten hills and pull away from lights fully loaded, wrapped in the weatherproofing British riders actually need. The MTX rim arrives as a complete made-to-order motor wheel in your exact size — no spoke lacing, no wheel building — so installation is a 20–30 minute job with the free toolset.
Every electrical component is sealed for real weather: the battery is IP65-rated and lockable, the controller is potted in thermal resin rather than hidden in a rain bag, and the loom uses waterproof quick-release connectors that cannot be wired wrong. It is the kit we recommend first to nine riders out of ten — and with 126+ verified reviews at ★4.8, the riders seem to agree.
Note: Please note that this kit is for off-road use only.
🇬🇧 Fast & FREE UK Delivery
We offer 100% FREE Shipping on all orders within the UK! Your e-bike kit will arrive quickly at your door within 3-5 business days.
🌍 Premium Global Shipping
We also proudly ship to the US, EU, Canada, Australia, Japan, and worldwide. International orders are dispatched via trusted premium carriers (DHL, FedEx, TNT) to ensure reliable service. Shipping rates are transparently calculated at checkout, and most global orders arrive within 5-14 business days (please allow slight delays for remote areas).
📦 Secure Battery Shipping Notice
For maximum safety and faster customs clearance, your e-bike kit and battery will be shipped in two separate, securely tracked packages. Both parcels are fully monitored to ensure they reach you safely.
We stand behind the quality of our kits. Wherever you ride, we’ve got you covered with our 1-Year Global Warranty.
🇬🇧 UK Riders (Full Coverage): Enjoy complete peace of mind with 1-year FREE repair service covering both your entire e-bike system and the battery.
🇺🇸 🇳🇱 US & Netherlands: Includes 1-year FREE repair service specifically dedicated to your e-bike battery.
🌍 Global Support: All international orders are fully backed by our standard 1-year global warranty against manufacturing defects.
If you encounter any issues with your kit or battery, our technical team is here to help! Please contact us directly at support@kirbebike.com.
52V 2000W MTX Rim Ebike Conversion Kit Waterproof Design
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60V 2500W-3000W MTX Rim Ebike Conversion Kit 45MPH+
52V 2600W MTX Rim Ebike Kit Waterproof Design.
52V 2000W MTX Rim Ebike Conversion Kit Waterproof Design
72V 4000W Extreme Performance Ebike Motor Kit for MTB and Fat Tire Bike 55MPH+
60V 2500W-3000W MTX Rim Ebike Conversion Kit 45MPH+
52V 2600W MTX Rim Ebike Kit Waterproof Design.
52V 2000W MTX Rim Ebike Conversion Kit Waterproof Design
72V 4000W Extreme Performance Ebike Motor Kit for MTB and Fat Tire Bike 55MPH+
60V 2500W-3000W MTX Rim Ebike Conversion Kit 45MPH+
52V 2600W MTX Rim Ebike Kit Waterproof Design.
Best For
Motor Power
Full Charged Voltage
Wheel Position
Wheel Size
Bike Compatibility
Top Speed
Range
Battery Required
Battery Included
Installation Level
Brake Compatibility
Waterproof Cables
App Support
52V 2000W MTX Rim Ebike Conversion Kit Waterproof Design
72V 4000W Extreme Performance Ebike Motor Kit for MTB and Fat Tire Bike 55MPH+
60V 2500W-3000W MTX Rim Ebike Conversion Kit 45MPH+
52V 2600W MTX Rim Ebike Kit Waterproof Design.
52V 2000W MTX Rim Ebike Conversion Kit Waterproof Design
72V 4000W Extreme Performance Ebike Motor Kit for MTB and Fat Tire Bike 55MPH+
60V 2500W-3000W MTX Rim Ebike Conversion Kit 45MPH+
52V 2600W MTX Rim Ebike Kit Waterproof Design.
52V 2000W MTX Rim Ebike Conversion Kit Waterproof Design
72V 4000W Extreme Performance Ebike Motor Kit for MTB and Fat Tire Bike 55MPH+
60V 2500W-3000W MTX Rim Ebike Conversion Kit 45MPH+
52V 2600W MTX Rim Ebike Kit Waterproof Design.
In the individual kit, you get everything you need to DIY your bike into an e-bike.
A 2000w powerful motor wheel, 48V 35Amp FOC sinewave smart controller, LCDS6 TFT color display, V12 PAS, Thumb throttle, e-Brake levers, 1T4 waterproof quick-release harness wires and a good package with foam to protect all parts be safe.
In addition we provide free sweet service accessories, installation tools and additional parts.
In the individual kit, you get everything you need to DIY your bike into an e-bike.
A 2000w powerful motor wheel, 48V 35Amp FOC sinewave smart controller, LCDS6 TFT color display, V12 PAS, Thumb throttle, e-Brake levers, 1T4 waterproof quick-release harness wires and a good package with foam to protect all parts be safe.
In addition we provide free sweet service accessories, installation tools and additional parts.
1. MTX 39 Double Wall Aluminum Alloy Strong Rim. Black Color
2. 2000w Brushless Direct Drive Rear Wheel, 6.8kgs weight.
3. Black Paint Spokes anti-rust 12G 2.6mm with copper Nipples.
4. Dropouts: 135-142mm. Two Motors: One is for a 7s threaded sprocket, and The other is for Cassete 8s/9s/10s sprocket.
5. Fit Disc Brake.
6. 50-60km/h max speed.
7. CE, ROHS certificates.
1. 48V 35Amp FOC sinewave 12mosfets Controller. It works for 36v, 48v and 52v lithium batteries.
2. FOC Sinewave Smart Controller
3. CE, ROHS certificates.
4. Best Cooling and Waterproof.
5. Easy to Install with tape tie.
1. Color Display Design.
2. Battery Power Indicator.
3. Running Speed, Average Speed, Max Speed.
4. Single Mileage, Total Mileage.
5. PAS Levers, Brake Signal, Throttle Signal.
6. Cruise Function, 6KM/H Walk Function, and so on.
Electric Brake Lever to cut off the power when you press it.
Easy installation、More sensitive 、more stable performance.
The waterproof and quick-release connectors.
On public roads at full power, no — but this kit switches to a fully legal 250W / 25 km/h mode when you hold the display button for 3 seconds. Ride legal on the road, unrestricted on private land. UK law allows 250W with pedal assist to 15.5 mph.
40–60 km on the 25Ah battery ridden briskly; 55–85 km on the 30Ah HS-II. Ridden gently with pedal assist, comfortably more. These are riding figures, not lab numbers.
This kit includes a 52V 25Ah/30Ah lithium battery, powered by LG Grade A cells for maximum reliability and performance. Fully charged to 58.8V, it offers substantial power and durability. It’s designed with IP66 waterproofing, protecting it from dust and water, making it ideal for various riding conditions.
It fits 26”, 27.5”, 29” and 700C wheels with 135 mm rear dropouts, disc or rim brakes, and 6-to-12-speed freewheels. Your motor wheel is built to order in your exact size — check the tyre sidewall and match it at checkout.
Absolutely. This kit is optimized for both on-road and off-road use, with durable components to withstand rough terrains. The 60Nm torque output provides strong hill-climbing power, while the brushless direct drive motor ensures smooth and efficient operation over rocky trails and steep inclines. For safety, we recommend ensuring your bike frame is sturdy and installing the included torque arm for extra stability.
Everything: made-to-order motor wheel, potted controller, colour display, battery and charger, pedal/brake sensors, and the complete installation toolset — free.
The kit is designed with user-friendly installation in mind, suitable for both beginners and experienced riders. The 1T4 waterproof main cable harness simplifies the setup process, and detailed step-by-step instructions are provided. Most users can complete the conversion in around 30 minutes using the included tools, making it easy to transform your bike quickly.
Yes — three ways: IP65-rated battery, resin-potted controller (not a rain bag), and sealed quick-release connectors throughout the loom. It is designed for British winters.
The battery is built for long-term reliability, with a lifespan of up to 800 charge cycles. Under typical use, this translates to around 3 years of performance before any noticeable capacity reduction. Smart power management features also help extend battery life by regulating output based on usage and conditions.
A 1-year warranty with service centres in the UK, US, and the Netherlands, so repairs never ship overseas. Real humans answer at support@kirbebike.com.
20–30 minutes with the free toolset: swap the rear wheel, mount the battery, click the waterproof connectors together. The wheel arrives fully built, so there is no spoke work.
