⚡ High-Torque Rear Hub Bicycle Conversion Kit
A premium high-torque rear hub conversion kit developed for riders looking for a strong, durable and responsive conversion system. The kit combines our high-torque copper-wound rear hub motor, all-black MTX39 rim, heavy-duty M14 axle, adjustable 45A sine wave controller, full-colour display and a comprehensive range of installation components.
The complete electrical system uses matching connectors for a straightforward plug-and-play installation, including an XT60 battery connection and heavy-duty XT150 phase bullet connectors.
Select “No Thanks” for the complete conversion kit on its own, or select “Yes Please” to receive the complete conversion kit together with our 52V 25Ah Grade A LG wedge battery package, including a powerful 60A BMS and 5A fan-cooled fast charger.
⭐ Key Features – Premium High-Torque Conversion Package
A complete premium conversion package designed for riders who want high torque, strong performance, excellent battery range and a straightforward installation. Everything you need to convert a compatible bicycle is included when selecting the complete kit and battery option.
- High-Torque Motor: Powerful copper-wound rear hub motor designed for strong acceleration, responsive power delivery and excellent torque
- 52V Performance: Optional premium 52V 25Ah battery package provides approximately 1300Wh of battery capacity
- Up to 50 Miles Range: Capable of up to approximately 50 miles from a full charge depending on rider weight, terrain, assistance level, riding style, speed and conditions
- Fast 4–5 Hour Charging: Supplied with a powerful 5A fan-cooled fast charger when the 52V 25Ah battery option is selected
- Grade A LG Cells: Premium battery manufactured using genuine Grade A LG 50MLT 21700 5000mAh lithium cells
- Powerful 60A BMS: High-current battery-management system designed to provide strong and reliable discharge performance
- Speed-Limit Function: Full-colour display and controller system includes adjustable speed-limiting functionality
- Completely Plug & Play: Matching electrical connections throughout the supplied system make installation straightforward with no soldering or rewiring of the supplied electrical components required
- Everything You Need: Motor wheel, controller, full-colour display, throttle, pedal-assist sensor, brake sensors, torque arms, controller bag, wiring box and installation accessories included
- Premium Quality Components: MTX39 double-wall rim, black stainless-steel spokes, stainless-steel nipples, heavy-duty M14 axle and XT150 motor phase connections
- Small & Large Frame Options: Available in 26", 27.5" and 29" wheel sizes, making the conversion system suitable for a wide range of compatible smaller and larger bicycle frames
- Complete 52V Package Available: Select “YES PLEASE” to receive the conversion kit, 52V 25Ah Grade A LG battery and 5A fast charger as a complete matched package
This package has been put together around quality components rather than simply supplying the cheapest possible conversion kit. From the high-torque motor and MTX39 wheel build through to the Grade A LG battery cells, powerful BMS, full-colour display and heavy-duty electrical connections, the system is designed to provide a strong, clean and premium-quality conversion.
📦 Purchase Options
Choose your battery option from the variation selection at the top of the listing:
🔹 NO THANKS – Conversion Kit Only
- Receive the complete conversion kit without a battery
- Ideal if you already own a suitable compatible battery
- Motor wheel, controller, display, throttle and supplied installation accessories are included
- No battery or battery charger is supplied with this option
🔹 YES PLEASE – Complete Kit + 52V 25Ah Battery Package
- Receive the complete conversion kit
- Includes our 52V 25Ah wedge-shaped battery
- Genuine Grade A LG 50MLT 21700 cells
- 5000mAh individual cell capacity
- Powerful 60A BMS
- XT60 battery discharge connection
- Includes a 5A fan-cooled fast charger
- Matching connections provide a completely plug-and-play electrical system
Select “YES PLEASE” for the complete conversion kit with the 52V 25Ah battery package.
Select “NO THANKS” for the complete conversion kit only.
🔌 Completely Plug & Play
The electrical components supplied with this conversion kit have been matched to provide a straightforward plug-and-play electrical installation.
- Matching waterproof component connections
- XT60 battery connection
- Heavy-duty XT150 phase bullet connectors
- Colour-coded electrical connections
- No soldering of the supplied electrical components required
- No rewiring of the supplied electrical components required
- Controller bag included
- Pre-drilled wiring box included for neat cable management
Mechanical installation is still required. If you purchase the kit without our battery and use a third-party battery, please ensure the battery has the correct voltage, discharge capability and electrical connection.
🚲 Bicycle Compatibility
This kit uses a strong M14 rear axle designed around a traditional approximately 135mm slotted rear dropout.
- Designed for approximately 135mm rear dropout spacing
- Traditional slotted rear dropout required
- Heavy-duty M14 motor axle
- Suitable for many MTB-style bicycle frames
- Not suitable for through-axle frames
- Not suitable for Boost or Super Boost through-axle systems
- Disc-brake compatible
Please check your bicycle before ordering. Your frame must use a traditional slotted rear dropout capable of accepting the supplied M14 axle.
If you are unsure, please send us clear photographs of your rear dropout, brake system and bottom bracket before ordering.
🛞 Premium All-Black MTX39 Rim
The high-torque rear hub motor is professionally built into our strong double-wall all-black MTX39 aluminium rim.
- Premium MTX39 double-wall aluminium rim
- Strong all-black finish
- Available in 26", 27.5" and 29"
- Designed for MTB-style tyres
- Built for strength and durability
- Disc-brake compatible
- Professionally built around the high-torque rear hub motor
Please select the correct wheel size from the listing variations and ensure your bicycle has suitable frame and tyre clearance.
🛠️ Black Stainless-Steel Spokes & Stainless-Steel Nipples
Wheel strength is extremely important on a high-torque hub motor. For this reason, we use upgraded black stainless-steel spokes together with stainless-steel nipples.
- Black stainless-steel spokes
- Stainless-steel spoke nipples
- Excellent corrosion resistance
- Designed to withstand the additional forces produced by a high-torque hub motor
- Significantly stronger than the generic steel spokes and nipples commonly supplied with lower-cost conversion wheels
- Premium wheel build designed for strength and long-term durability
Our upgraded stainless-steel wheel components provide a substantial improvement in strength and durability compared with generic steel alternatives.
⚙️ Heavy-Duty M14 Freewheel Axle
This version uses a strong M14 motor axle with a traditional screw-on freewheel fitting.
- Heavy-duty M14 axle
- Designed around approximately 135mm rear dropout spacing
- Compatible with a 16-tooth single-speed screw-on freewheel
- Compatible with a 7-speed screw-on freewheel
- Simple and robust screw-on freewheel system
This motor uses a screw-on style freewheel. It does not use an HG cassette.
The hub can accept either a compatible 16T single-speed freewheel or a compatible 7-speed screw-on freewheel.
⚡ High-Torque Copper-Wound Hub Motor
At the heart of the system is our large high-torque rear hub motor, developed to provide a strong combination of torque, responsiveness and speed capability.
- High-torque rear hub motor
- Specialised copper winding configuration
- Designed to provide strong acceleration and torque
- Optimised to provide a balance between torque and higher rotational speed
- Large direct-drive style motor construction
- Heavy-duty M14 axle
- Designed to work with the supplied 45A sine wave controller
The motor and controller have been selected as a matched system to provide smooth, responsive and reliable performance when installed and configured correctly.
⚡ Adjustable 45A Sine Wave Controller
The kit includes a powerful 45A sine wave controller designed to provide smooth, quiet and responsive motor control.
- 45A maximum controller current
- Adjustable current settings
- Adjustable speed-limit settings
- Sine wave technology for smooth power delivery
- Smooth throttle response
- Responsive pedal-assist operation
- Quiet motor operation
- XT60 battery input
- Heavy-duty XT150 phase bullet connectors
- Designed to work with the supplied high-torque hub motor
- Matched to the optional 52V 25Ah 60A BMS battery
🔌 Heavy-Duty XT150 Phase Connectors
The high-current motor phase connections use XT150 bullet-style connectors for a secure and heavy-duty connection between the motor and controller.
- Heavy-duty XT150 phase connections
- Designed for high-current applications
- Secure connection between motor and controller
- Colour-coded for straightforward installation
- Plug-and-play connection to the supplied controller
📦 What’s Included in the Conversion Kit
- High-torque rear hub motor
- All-black double-wall MTX39 aluminium rim
- Selected wheel size: 26", 27.5" or 29"
- Black stainless-steel spokes
- Stainless-steel spoke nipples
- Heavy-duty M14 axle
- Screw-on freewheel fitting
- 45A adjustable sine wave controller
- XT60 battery connection
- XT150 motor phase bullet connectors
- Full-colour display
- Display speed-limiter functionality
- Twist throttle
- Pedal-assist sensor
- Magnetic brake sensors
- Torque arms
- Controller bag
- Pre-drilled wiring / cable-management box
- Waterproof plug-and-play wiring connections
- Installation accessories
🎨 Full-Colour Display
The kit is supplied with a modern full-colour display, giving the rider clear access to important ride information and system settings.
- Bright full-colour screen
- Clear real-time ride information
- Speed display
- Battery information
- Pedal-assist level display
- Multiple adjustable assistance levels
- Adjustable system settings
- Speed-limit functionality
- Simple handlebar-mounted controls
🚴 Pedal-Assist System
A pedal-assist sensor is included, allowing the motor to provide assistance automatically while pedalling.
- Cadence-based pedal assistance
- Multiple assistance levels
- Controlled through the supplied display
- Provides motor assistance while pedalling
Different bicycle bottom bracket designs may require different pedal-assist sensor arrangements. Please check compatibility before ordering.
🛑 Magnetic Brake Sensors
Magnetic brake cut-off sensors are included to provide an additional motor cut-off function when the brakes are applied.
- Magnetic brake sensors included
- Designed to work with many existing bicycle brake levers
- Allows many riders to retain their existing brake levers
- Cuts motor assistance when the brake is activated
- Provides an additional safety function
🔩 Torque Arms
Torque arms are supplied to provide additional support at the rear dropout and help manage the rotational force produced by the high-torque hub motor.
- Heavy-duty torque-arm support
- Helps prevent unwanted axle movement
- Provides additional support around the rear dropout
- Important for correct high-torque hub motor installation
Correct torque-arm installation is essential. Always ensure the axle, washers, nuts and torque arms are installed and secured correctly before riding.
🎒 Controller Bag & Pre-Drilled Wiring Box
The kit includes both a controller bag and a pre-drilled wiring box to help create a clean and professional installation.
- Controller bag included
- Provides a practical location for mounting and protecting the controller
- Pre-drilled wiring box included
- Designed to house and organise controller wiring and connections
- Helps reduce loose and exposed wiring
- Provides a cleaner finished conversion
- Pre-drilled design makes cable routing easier
🔋 Optional 52V 25Ah Grade A LG Wedge Battery
Select “Yes Please” from the battery variation to receive the complete kit together with our premium 52V 25Ah wedge-shaped lithium battery.
The battery is manufactured using genuine Grade A LG 50MLT 21700 lithium cells. Each individual cell has a capacity of 5000mAh, providing a high-capacity battery package designed for demanding e-bike applications.
A powerful 60A Battery Management System (BMS) provides the discharge capability required for the supplied conversion system.
The battery uses an XT60 discharge connection and is matched to the XT60 battery input on the supplied controller, creating a straightforward plug-and-play connection.
A powerful 5A fan-cooled fast charger is included with the battery option.
🔋 52V 25Ah Battery Specifications
- Voltage: 52V
- Capacity: 25Ah
- Energy: Approximately 1300Wh
- Battery Style: Wedge-shaped battery
- Approximate Weight: 9kg
- Cell Manufacturer: LG
- Cell Model: LG 50MLT
- Cell Format: 21700
- Individual Cell Capacity: 5000mAh
- Cell Grade: Grade A
- BMS: 60A Battery Management System
- Discharge Connection: XT60
- Charger: 5A fast charger
- Charger Cooling: Fan cooled
- Certification: Supplied with the relevant certification required for sale in the United Kingdom
⚡ 5A Fan-Cooled Fast Charger
When the battery option is selected, a powerful 5A fast charger is supplied as part of the battery package.
- 5A charging output
- Designed for the supplied 52V battery
- Fan-cooled design
- Faster charging than lower-current standard chargers
- Matched to the supplied battery package
Always charge the battery using the correct charger supplied with the battery and follow the battery charging and storage instructions.
🛡️ Battery Quality & Certification
Battery quality is extremely important. Our optional 52V 25Ah battery is manufactured using genuine Grade A LG 50MLT 21700 cells and incorporates a powerful 60A BMS.
- Genuine Grade A LG cells
- LG 50MLT 21700 cell format
- 5000mAh individual cell capacity
- 60A Battery Management System
- High-capacity 52V 25Ah configuration
- XT60 discharge connection
- Relevant certification for sale within the United Kingdom
- 5A fan-cooled charger included with the battery option
⭐ E Bike Power UK® High-Torque Setup
E Bike Power UK® has carefully selected and matched the components in this kit to create a strong, durable and responsive rear hub conversion package.
- High-torque copper-wound rear hub motor
- Available in 26", 27.5" and 29"
- Premium all-black double-wall MTX39 rim
- Black stainless-steel spokes
- Stainless-steel spoke nipples
- Heavy-duty M14 axle
- Approximately 135mm rear dropout fitment
- Screw-on freewheel system
- Compatible with 16T single-speed or 7-speed screw-on freewheels
- 45A adjustable sine wave controller
- Adjustable current settings
- Adjustable speed-limit settings
- XT60 battery connection
- Heavy-duty XT150 phase bullet connectors
- Full-colour display
- Twist throttle
- Pedal-assist sensor
- Magnetic brake sensors
- Torque-arm support
- Controller bag included
- Pre-drilled wiring box included
- Waterproof plug-and-play electrical connections
- Optional 52V 25Ah wedge battery
- Grade A LG 50MLT 21700 cells
- 5000mAh individual cell capacity
- 60A battery-management system
- 5A fan-cooled fast charger
The result is a comprehensive conversion package designed around strong components, clean installation and straightforward plug-and-play electrical connections.
⚠️ Important Installation Information
This is a powerful, high-torque conversion system and must be installed correctly. We strongly recommend installation by a competent person with suitable bicycle mechanical and electrical knowledge.
- Check rear dropout compatibility before ordering
- Ensure the frame can correctly accept the M14 axle
- Install the supplied torque arms correctly
- Ensure axle nuts are correctly tightened
- Check wheel alignment before riding
- Ensure brake clearance and operation are correct
- Secure the controller and all electrical wiring
- Check all connections before powering the system
If you are unsure whether the kit will fit your bicycle, please contact us before ordering and provide clear photographs of the rear dropout, frame, brakes and bottom bracket.
🇬🇧 Road Use & Display Limiter
The supplied display/controller system provides adjustable settings including speed-limiting functionality.
It is the purchaser's responsibility to ensure that the converted bicycle is configured and operated in accordance with all applicable laws and regulations for the location and type of use.
Any adjustable limiter or controller setting does not by itself guarantee that a converted bicycle meets the legal definition of an electrically assisted pedal cycle. Please ensure you understand the applicable requirements before using the bicycle on public roads.
⚠️ Safety & Disclaimer
Please ensure all products are installed and used correctly. Bicycle electrical components should only be fitted by a competent person with suitable mechanical and electrical knowledge.
Although the supplied electrical components are designed around a plug-and-play system, correct mechanical installation is still essential. This includes the motor wheel, axle hardware, torque arms, controller, wiring, pedal-assist sensor, brake sensors and battery where applicable.
Always inspect the bicycle before riding. Check the wheel, axle nuts, torque arms, brakes and electrical connections regularly.
The purchaser is responsible for ensuring compliance with all applicable local laws and regulations.
E Bike Power UK® accepts no liability for injury, damage, loss or legal consequences resulting from incorrect installation, modification, misuse or improper operation of any product supplied.
🔋 Never leave lithium batteries charging unattended. Always use the correct charger supplied or specifically approved for the battery.
🚚 Shipping
- Components inspected before dispatch
- Tracked delivery service
- Dispatch Monday to Friday
- Large motor wheels and batteries may be dispatched in separate parcels
- Tracking information supplied following dispatch
↩️ Returns
- 30-day return policy
- Item must be unused, complete and in its original condition
- Returned items are inspected before refund
- Please contact us before returning an item if you require assistance
🤝 Need Help Choosing the Correct Kit?
If you have any questions about wheel size, freewheel compatibility, brakes, dropout fitment, battery fitment, bottom bracket compatibility or installation, please message us before ordering.
If you're unsure about fitment, send us clear photographs of your bicycle and we will be happy to help identify the correct setup.