Finding a reliable rear wheel assembly is essential for upgrading a motorized bicycle or converting a regular bike into electric power. This guide highlights five compatible rear wheel options that blend durability, braking compatibility, and installation ease. Each product page links to Amazon for quick shopping, and the features listed help you compare fit, axle size, and disc or V-brake compatibility. The table below summarizes core specs to help you decide which wheel best fits your bike and your motor kit.
| Product | Brand | Wheel Size | Axle Width | Notes |
|---|---|---|---|---|
| CDHPOWER 26-Inch Rear Mag Wheel | CDHPOWER | 26 inch | 135mm | Includes axle; compatible with Rotary freewheel; aluminum alloy; potential transit scratches noted |
| CDHPOWER 26-Inch Rear Mag Wheel Only | CDHPOWER | 26 inch | 135mm | Wheel only; sprocket excluded; disc brake compatibility; includes axle |
| LOYALHEARTDY 20-Inch Rear Hub Electric Kit | LOYALHEARTDY | 20 inch | 135mm | 48V 1000W motor kit; supports V and disc brakes; includes throttle and pedal assist sensor |
| LUPENGSHOP 29-Inch Rear Wheel Kit | LUPENGSHOP | 29 inch | 135mm | 2000W, 72V; includes PAS, LCD display; ready for high-power conversions |
| DONSP1986 26-Inch Aluminum Rear Mag Wheel | DONSP1986 | 26 inch | 135mm | Mag wheel rim; compatible with single to multi-speed rotary freewheels; excludes 6 bolts |
CDHPOWER 26-Inch Rear Mag Wheel
The CDHPOWER 26-inch rear mag wheel combines aluminum alloy construction with a 135mm rear width, and includes the axle. It is designed to fit Rotary single and multi-speed freewheels and supports standard 26-inch bikes or motorized bicycles. Inner diameter is 17.5mm for reliable bearing fit. Transport-related scratches or paint peeling may occur, so buyers should inspect upon receipt.
- Wheel Size: 26″
- Rear Width: 135mm
- Rim Inner Diameter: 17.5mm
- Axle Included
- Rotary Freewheel Compatible
- Material: Aluminum Alloy
Note: The front disc brake hole spacing on this mag wheel is 44mm if a front disc brake adapter is added, and this wheel is intended for 26-inch bikes or motorized builds.
CDHPOWER 26-Inch Rear Mag Wheel Only
This product is a 26-inch rear mag wheel sold as a wheel-only unit. It features a 135mm rear width and an inner rim diameter of 17.5mm, with included axles. It supports disc brake compatibility and is designed for easy installation of a new sprocket on the mag wheel. The kit is light yet durable, making it suitable for gas motorized bicycles that use Rotary freewheels.
- Wheel Size: 26″
- Rear Width: 135mm
- Inner Rim: 17.5mm
- Brakes: Disc compatible
- Axles Included
- Note: Engine chain drive sprocket excluded; easy sprocket installation on mag wheel
Users should verify their sprocket compatibility and ensure proper torque when installing the sprocket onto the mag wheel.
LOYALHEARTDY 20-Inch Rear Hub Electric Kit
This kit centers a 48V 1000W brushless motor with a 135mm rear fork opening, designed for quick conversions to electric power. It supports both V-brake and disc brake systems and includes a thumb throttle and pedal assist sensor. The system promises up to 50 km/h (31 mph) top speed, with a rear-wheel drive focus that maintains a compact footprint on smaller bikes.
- Motor: 48V 1000W Brushless
- Rear Fork Opening: 135mm
- Brakes: V or Disc
- Top Speed: ~50 km/h
- Includes: Thumb throttle, pedal assist sensor
Important: When wiring the controller, color connections must be matched correctly to avoid damage. Battery voltage must be compatible with the kit’s controller specifications.
LUPENGSHOP 29-Inch Rear Wheel Kit
The 29-inch rear wheel kit from LUPENGSHOP combines a robust 2000W motor with a 72V system and a 560 RPM output. It is designed to power high-performance electric bikes and includes a pedal assist sensor and a multifunction LCD display for easy ride data monitoring. The package lists include handlebars and controller bags to consolidate upgrade parts in one purchase, making installation more straightforward for experienced DIY enthusiasts.
- Motor Power: 2000W
- Voltage: 72V
- Wheel Size: 29″
- Includes: PAS sensor, LCD display, handlebars, controller bags
- Material: Aluminum wheel construction
Note: Battery compatibility is essential; ensure your power source matches the kit’s requirements for safe operation and performance.
DONSP1986 26-Inch Aluminum Rear Mag Wheel
This aluminum rear mag wheel by DONSP1986 is designed for 26-inch bikes with a 135mm rear width and a rim inner diameter of 17.5mm. It works with both single-speed and 7/8/9 multi-speed rotary freewheels. The rim width is approximately 1.062 inches. Note that six Allen bolts are not included, so users may need M5x23mm bolts (or longer if using thicker sprockets).
- Wheel Size: 26″
- Rear Width: 135mm
- Inner Diameter: 17.5mm
- Rim Width: ~1.062 in
- Bolts Not Included
Ideal for gas motorized bicycles and DIY builds; verify bolt compatibility and ensure proper rotor alignment for safe operation.
Buying Guide
Key purchase considerations
- Wheel size and dropout spacing: Most rear wheels here use 135mm spacing. Confirm your bike frame’s dropout width and ensure the wheel’s axle will fit without adapters.
- Brake compatibility: Disc brakes require compatible rotor mounting and space on the wheel hub. If you plan to convert from rim brakes, verify clearances and mounting hardware.
- Sprocket and motor compatibility: Some wheels are sold with or without sprockets. If you’re integrating with a motor kit, check whether the sprocket is included and whether its teeth count matches your drive system.
- Motor kit power and battery: For kit-based wheels (like the 2000W 72V kit), ensure the battery and controller specs align with safety standards and local regulations. Higher wattage requires robust wiring and appropriate fusing.
- Axle and bearings: Axles may come included or require purchase separately. Confirm axle length, thread type, and bearing quality to prevent wobble and ensure long-term reliability.
- Material and weight: Aluminum rims are common for lightweight performance and corrosion resistance. Heavier rims can impact acceleration and efficiency, so balance weight with strength for your riding style.
- Installation and maintenance: Some wheels arrive as complete assemblies; others may require extra work to mount sprockets or adapters. Consider whether you’ll do installation yourself or hire a professional.
How to choose among the five options
- For a straightforward upgrade on a 26-inch bike, the CDHPOWER 26-Inch Rear Mag Wheel offers a solid balance of strength, weight, and compatibility with Rotary freewheels.
- If you need a wheel-ready option with a sprocket included or a more disc-compatible setup, the CDHPOWER Rear Mag Wheel Only is a compelling choice.
- To add electric propulsion to a smaller bike (20-inch), the LOYALHEARTDY hub kit provides a complete motor and sensor package with brake versatility.
- For high-power electric conversions on larger bikes, the LUPENGSHOP 29-Inch kit delivers substantial power, an LCD display, and pedal assist features for a more integrated ride experience.
- If you’re upgrading a 26-inch gas bike with a mag wheel that supports multiple speeds, the DONSP1986 model is a practical option, with clear bolt guidance and compatibility notes.