Best Electric Motor For Bmx Bike: Compare 10 Conversion Kits

#1 · Best Overall

1. LOYALHEARTDY 20-Inch Hub Kit

• Weight: 18 lb

Best for: 20-Inch Hub Conversion Commuters.

Why it ranks #1: Its 20-inch hub assembly suits the common BMX wheel format, and the listed 48V 1000W setup includes a controller and display for a complete conversion.

A 48V, 1000W brushless hub motor rated at 45Nm torque gives this 20-inch conversion kit a power-focused setup for commuting and light off-road riding. Its listed maximum no-load speed is 42km/h, and the stated 280-pound load capacity sets a useful boundary for considering rider and cargo weight.

The 20-inch front/rear hub assembly makes wheel size the first compatibility check for a conversion, while the included SW-810LED display gives the kit an on-bike readout. A 48V/30A controller is specified alongside the 1000W motor, and the brushless drive is described for forest roads, steep hills, dirt and gravel. The 280-pound maximum load recommendation is relevant when weighing daily commuting or weekend use; check that the bike’s wheel and brake setup suit this hub assembly.

Skip it if you have a 16–28-inch setup that needs a separate chain-drive motor; the FONSOLUM kit lists that broader wheel range.

This is a fit for a commuter or light-trail rider whose bicycle takes a 20-inch wheel and whose load stays within 280 pounds. Its hub format and listed disc brake style make wheel and brake compatibility essential.

Listed on Amazon as: 20" Front/Rear Wheel Hub Electric Bike Conversion Kit, 36V 250W/48V 1000W E-Bike Powerful Hub Motor Kit with SW-810LED Display Waterproof Wire Front/Rear Wheel Hub Assembly Motor Kit (US Stock)

#2 · Best PAS Kit

2. Bdujhit 20-Inch Rear Hub Kit

Best for: PAS-Assisted 20-Inch Commuters.

Why it ranks #2: The 20-inch rear hub kit includes a PAS sensor and LCD display, with a listed 48V 1500W motor for buyers seeking pedal-assist equipment.

A 48V, 1500W rear hub kit combines a 20-inch wheel with a PAS sensor and LCD display, giving commuters both pedal-assist hardware and an on-bike screen in one conversion package. The listed motor efficiency is over 82%, and its brushless, gearless design suits buyers prioritizing a hub-based setup.

The PAS sensor supports a pedaling-oriented workflow, while the LCD display provides a separate visual interface for the conversion system. A 7-speed rear wheel is identified in the title, which matters when planning how the converted bike’s gearing will work for commuting or short rides. The brushless, gearless motor avoids the listed brush-and-gear arrangement, and the stated maximum load is about 330.69 pounds. Confirm the bike’s wheel and drivetrain requirements before installation.

Skip it if you need a 72V, 2000W rear-wheel package; the LARIDEN kit specifies that higher-voltage setup with display and pedal sensor.

This fits a commuter or short-distance rider whose bicycle takes a 20-inch rear wheel and who wants PAS and an LCD in the conversion package. Wheel and gearing compatibility remain important checks.

Listed on Amazon as: Electric Bicycle Conversion Kit, 48V 1500W Ebike 20" Rear Hub Motor Wheel Kit with PAS Sensor & LCD Display, 7 Gears Electric Snow E-Bike Conversion Kit, Upgrade Brushless Gearless Hub Motor Kit

#3 · Highest Capacity

3. YUASDUU 20-Inch Rear Hub Kit

• Material: Aluminum, Copper, Rubber, Stainless Steel

Best for: Load-Focused 20-Inch PAS Builds.

Why it ranks #3: Its 20-inch rear hub format includes a PAS sensor and LCD display, and the listed maximum load capacity is about 330.69 pounds.

A 330.69-pound listed capacity distinguishes this 48V, 1500W, 20-inch rear hub conversion for riders who need to account for a heavier combined load. The kit names a PAS sensor and LCD display, joining pedal-assist control and an on-bike screen with a brushless, gearless motor.

The PAS sensor supports pedal-assisted riding, which the listing says can make pedaling, riding and climbing easier and reduce fatigue. Its LCD display adds an in-kit screen, while the rear motor wheel and 48V controller form the core hub conversion components. Materials listed include aluminum, copper, rubber and stainless steel, with the wheel described as supporting standard adult bicycle frames. The 20-inch wheel remains the primary fit boundary, and the package contents specify only the rear wheel and controller.

Skip it if you want an explicitly listed throttle, brake lever and controller bag; the LARIDEN kit includes those parts with its 20-inch wheel.

This suits a rider seeking a 20-inch PAS hub conversion with a substantial stated load capacity. The available package details name the wheel and controller, so account for the other controls and installation parts needed.

Listed on Amazon as: 48V 1500W Electric Bicycle Conversion Kit, 20" Ebike Rear Hub Motor Wheel Kit with PAS Sensor and LCD Display Snow Bike Electric Bicycle Fat Snow Tire Motor Kits Brushless Gearless Hub Motor

#4 · Highest Output

4. LARIDEN 20-Inch Hub Kit

• Material: Aluminum, Rubber, Stainless Steel

Best for: 72V Power for 20-Inch Builds.

Why it ranks #4: This 20-inch rear hub kit lists 72V and 2000W, plus a display, PAS sensor, throttle, and power-off brake lever; confirm BMX fit carefully.

A 72V, 2000W brushless rear hub motor delivers listed torque of 60Nm and speed of 560rpm, making this 20-inch kit the high-voltage option for riders prioritizing strong motor output. Its package includes an LCD display, pedal-assist sensor, throttle and power-off brake lever for a more complete conversion workflow.

The rear motor wheel arrives with a controller and LCD display, while the pedal-assist sensor and ordinary throttle give the rider two listed input methods. A power-off brake lever adds a brake-control component to the package, and the controller bag keeps that part within the conversion kit. The 20-inch wheel and included 9-speed flywheel are central fit and drivetrain details; the product information also lists a 7-speed flywheel, so check the supplied configuration against the bike before assembly.

Skip it if you need a 48V kit for a 20-inch wheel; the Bdujhit package lists a 48V, 1500W hub conversion with PAS and display.

This targets a rider converting a 20-inch bicycle who wants a 72V rear hub and multiple included controls. The wheel size and listed 9-speed flywheel deserve careful drivetrain checks before installation.

Listed on Amazon as: 20-Inch Electric Bike Rear Hub Motor Kit, 72V 2000W Electric Bike Conversion Kit, Hub Motor Conversion Kit with Mutifunction Display Pedal Assistant Sensor

#5 · Multi-Size Wheel

5. KPATH 1000W Hub Motor

• Weight: 8.5 lb
• Material: Aluminum, Copper
• Voltage: 48 V

Best for: Lightweight Hub Motor Replacements.

Why it ranks #5: The 48V 1000W hub motor is listed for 20-, 24-, and 26-inch rims, giving wheel-size options, though the included component is a motor gear clutch kit.

At 8.5 pounds, KPATH’s 48V, 1000W hub motor is a comparatively light listed wheel-motor option for replacement or modification projects. It is specified for 20-, 24- and 26-inch rims and includes a motor gear clutch kit, making rim size and the intended drivetrain application central to choosing it.

The listed rim choices cover three common wheel diameters, giving replacement and modification buyers a defined starting point for checking wheel compatibility. KPATH also identifies applications including electric scooters, folding bikes, lightweight electric quadricycles, pedal-assist bicycles and mountain bikes. The left-side cable outlet is on the disc-brake side, a detail that can affect routing and installation planning. Since the included components are a motor gear clutch kit rather than a full conversion package, arrange the other system parts separately.

Skip it if you need a complete 20-inch wheel kit with controller and LCD; the YUASDUU conversion kit lists a rear wheel and 48V controller.

This is for a replacement or modification project using a listed 20-, 24- or 26-inch rim and a suitable existing system. Check cable routing at the disc-brake side and plan for parts beyond the motor clutch kit.

Listed on Amazon as: Electric Bicycle Hub Motor, 48V 1000W Wheel Motor,20/24/26-inch Rims,34MPH

#6

6. BAFANG BBS02B Mid Drive Kit

• Voltage: 48 V

Best for: Mid-Drive Buyers Seeking Configuration Choice.

Why it ranks #6: Its mid-drive format may suit a BMX only if the frame matches the listed 68–73mm bottom-bracket option; power configurations include 500W, 750W, and 1000W.

BAFANG’s mid-drive kit offers selectable 500W, 750W or 1000W configurations, letting a builder choose among listed output and torque levels rather than commit to one motor rating. CAN Bus technology and a display-equipped conversion format target riders who want configurable control and a mid-drive installation.

The listed 1000W option delivers 160Nm torque and a maximum speed of 37MPH, while the 750W option is rated at 120Nm and 34MPH; the 500W option is listed at 100Nm and 28MPH. That range lets buyers match the configuration to their intended riding demands. The kit specifies bottom-bracket fitments of 68–73, 100 or 120mm, making frame measurement essential. A battery is optional, so power-system planning remains part of the build.

Skip it if you want a rear hub wheel conversion rather than a bottom-bracket mid-drive; the LARIDEN kit supplies a 20-inch rear wheel motor.

This suits a builder who wants a configurable mid-drive and can match the bottom-bracket width to the listed sizes. Its optional battery and frame measurements make system planning essential before choosing a configuration.

Listed on Amazon as: BAFANG BBS02B / BBS-HD Mid Drive Motor Kit,36V/48V/52V 1000W/750W CAN Bus Ebike Conversion Kit with LCD Display, USB Programmable, Fits 68-73/100/120mm Bottom Bracket, Battery Optional

#7

7. LiHUiee 1500W Rear Hub Motor

• Weight: 15.4 lb
• Material: Aluminum+ Iron + Copper+Magnetic Steel
• Voltage: 48 V DC

Best for: Quiet Rear-Hub Wheel Conversions.

Why it ranks #7: The brushless, gearless 48V 1500W rear motor is described for 20–28-inch conventional bikes, but it is supplied as a motor rather than a complete wheel kit.

A brushless, gearless rear hub motor rated at 48V and 1500W reaches a listed 500rpm, offering a wheel-based conversion option without brushes or gears in the motor. Its operating noise is specified below 55dB, a concrete consideration for riders who prefer a quieter drive on conventional bicycles.

The rear-wheel format places the motor at the back rather than requiring a separate chain-drive motor, which can simplify the type of conversion being planned. Brushless, gearless construction is associated in the listing with reduced friction and smoother running on irregular roads, while the under-55dB noise figure helps set expectations for operation. Compatibility is stated for 20–28-inch conventional bikes and rear-wheel dropouts of 5.31 inches, so those dimensions should guide the fit decision.

Skip it if you need a 20-inch rear wheel with controller, display and PAS included; the Bdujhit kit lists those conversion components.

This suits a rider seeking a quieter rear-wheel motor for a conventional 20–28-inch bicycle. Its 5.31-inch rear dropout specification is a key fit boundary, and the listing does not describe a complete control package.

Listed on Amazon as: Rear Wheel Motor, 48V 1500W Electric Hub Motor 500rpm Brushless Gearless Threaded Hub Motor for 20-28" Conventional Bikes and Rear Wheels with Dropouts of 5.31Inches

#8

8. FONSOLUM 250W Chain-Drive Kit

• Weight: 7.5 lb
• Material: Aluminum, Copper, Iron

Best for: DIY Builds With 16–28-Inch Wheels.

Why it ranks #8: Its 24V 250W chain-drive kit is listed for 16–28-inch wheels and includes a controller and throttle, but BMX mounting compatibility is not specified.

A 24V, 250W brushed motor kit covers 16–28-inch wheels, giving DIY builders a defined wheel-size range for converting a bicycle or scooter. Its package includes the motor, chain, freewheel, adapter, controller, mounting plate and throttle, so the main drive and control parts arrive together for assembly.

The included freewheel and adapter pair with the chain-drive motor, while the mounting plate and controller provide key parts for putting the conversion together. A throttle with a non-slip grip offers a more secure-feeling handhold during operation, and the supplied left handle sleeve helps complete the handlebar controls. The roughly 4.92-foot cable gives some flexibility when connecting to the controller. Handlebar compatibility is listed for standard 0.87-inch bars, and the stated wheel range is 16–28 inches.

Skip it if you need a 48V or higher-output drive; the Kunray 48V 2000W kit is a better match for that power requirement.

This suits a DIY rider converting a bicycle with a 16–28-inch wheel and standard 0.87-inch handlebars. The included drive parts simplify the parts list, but installation still calls for assembly and attention to the manual.

Listed on Amazon as: Electric Bicycle Motor Kit, 24V 250W E-Bike Conversion Kit, Electric Bicycle Retrofit w/Brushed Controller, DIY Powerful Electric Scooter Motor Kit Chain Drive Convert for 16-28''Wheel

#9

9. Kunray 2000W Brushless Kit

• Weight: 6 kg
• Material: Aluminum
• Voltage: 48 V

Best for: High-Power Chain-Drive Builders.

Why it ranks #9: The 48V 2000W motor kit includes a controller and throttle, but the listing does not identify a BMX wheel size or a complete wheel assembly.

The Kunray MY1020 pairs a 48V brushless motor rated up to 2000W with a 33A controller, giving a DIY builder a high-output chain-drive starting point. Its aluminum body, copper coil and naturally air-cooled construction are specified alongside low-noise operation, while the included throttle completes the basic motor-control package.

The T8F 11-tooth sprocket chainwheel provides a named chain-drive interface, so builders can plan the drive around that supplied sprocket rather than a hub wheel. The controller is rated at 48V, 2000W and 33A, and the motor’s stated maximum current is 42A; those electrical figures matter when matching a suitable system. The motor turns at a rated 4300rpm/min under no-load conditions. Wiring between motor and controller can change its running direction.

Skip it if you want a complete 20-inch rear hub wheel with display and PAS; the LARIDEN kit lists those components together.

Choose this for a builder planning a high-output chain-drive installation who can work with its 48V controller and T8F sprocket. It does not supply a complete wheel, so the surrounding drive and mounting setup remain part of the project.

Listed on Amazon as: Electric Brushless DC Motor Kit,48V 2000W Motor,33A Controller,LCD Throttle

#10

10. LIAPDG 2000W Chain-Drive Kit

• Weight: 13.6 lb
• Material: Aluminum, Copper
• Voltage: 48 V

Best for: Chain-Drive 2000W DIY Projects.

Why it ranks #10: Its 48V 2000W chain-drive package includes a controller, chain, and throttle, but no BMX wheel-size fit is given, making compatibility less certain.

LIAPDG’s 48V brushless toothed motor is rated at 2000W and 4300rpm, giving chain-drive builders a high-output motor kit with a controller and chain included. The package also lists a chainring and twist throttle, while its stated load range of roughly 220–331 pounds adds a project-planning reference.

The motor, chain, chainring and controller arrive as named drive components, so the conversion centers on a chain-driven installation rather than a complete hub wheel. A twist throttle is included for control, and the automatic motor phase-angle identification is a specified electrical feature. The listed motor dimensions are 4.33 by 4.01 inches, with a 2.2-inch mounting-base length, details that help assess available installation space. The product advises reading the operating manual and safety instructions before use.

Skip it if you need a ready-to-fit 20-inch rear hub wheel with PAS and LCD; the Bdujhit kit lists those components.

This is for a DIY builder planning a chain-drive project who can accommodate the listed motor and mounting-base dimensions. Its included chain and controls help, but wheel, mounting and system integration remain project considerations.

Listed on Amazon as: 2000W 48V Electric Brushless DC Motor Kit with Chain, Controller