Best E Bike Conversion Kits for Mid-Drive and Hub Builds

#1 · Best Overall

1. Bafang BBS01B Kit

• Weight: 6.6 kg

Best for: Mid-drive hill commuters.

Why it ranks #1: Its 500W, 100Nm mid-drive includes a 36V 17.5Ah battery, charger, C961 display and tools; stated bottom-bracket fit is 34–36mm.

The 500W mid-drive motor is rated at 100Nm, giving riders a conversion option explicitly suited to hills and city streets. Its package pairs that motor with a 36V 17.5Ah battery, charger, C961 display, speed sensor, throttle, and crank brakes, enabling a more complete conversion workflow from one kit.

The C961 display offers nine pedal-assistance levels and an automatic backlight, so riders can adjust assistance and read the screen as lighting changes. The included 36V 17.5Ah battery and charger keep the power components together in the package, while the listed tools support installation. Fit is specific: the kit is listed for bottom brackets 34–36mm in diameter, so owners outside that range should look elsewhere before planning a conversion.

Skip it if you have a bottom bracket outside 34–36mm; Bafang’s BBS02B kit lists the same bracket diameter range, so it is not a wider-fit alternative.

Choose this kit if you want a Bafang mid-drive conversion with a battery, charger, and nine-level display for city riding or hills. Its key fit boundary is a 34–36mm bottom-bracket diameter.

Listed on Amazon as: Bafang – BBS01B E-Bike Conversion Kit 500W 36V Mid Drive Engine G340 C961 Display 36V 17.5Ah Battery and Charger

#2 · Best Higher-Power Mid-Drive

2. Bafang BBS02B Kit

• Wheel Size: 26 in
• Weight: 6.6 kg

Best for: Higher-output Bafang builds.

Why it ranks #2: The 750W, 160Nm mid-drive comes with a 48V 16Ah battery, charger, C961 display and tools for a more powerful complete setup.

A 750W mid-drive motor rated at 160Nm distinguishes this Bafang kit, with power intended for hills as well as city riding. The package combines a 48V 16Ah battery and charger with a C961 display, offering buyers a matched set of core electrical parts rather than a motor-only conversion.

The C961 display provides nine pedal-assistance levels and automatic backlighting, helping riders select assistance and see the readout in changing light. Included tools support the conversion process, and the listed bottom-bracket fit is 34–36mm in diameter. That compatibility range is a key planning check; the kit’s 48V 16Ah battery and charger are specified, but buyers should still assess their bike’s bracket before installation.

Skip it if you need a bottom-bracket range wider than 34–36mm; the Varstrom TSDZ-2B listing does not state a bracket range either, so neither listing confirms wider fit.

This suits riders seeking a higher-output Bafang mid-drive kit with battery, charger, and adjustable assistance for urban routes or hills. Check the 34–36mm bottom-bracket requirement against your bike before taking on installation.

Listed on Amazon as: Bafang – BBS02B E-Bike Conversion Kit 750W 48V Mid-Drive Motor with Battery, C961 Display, 48V 16Ah Battery and Charger

#3 · Best Torque-Sensor Mid-Drive

3. Varstrom TSDZ-2B Kit

• Wheel Size: 26 in
• Warranty Description: 30 Days return time,365 days warranty…

Best for: Torque-sensor kit selectors.

Why it ranks #3: Its listed torque-sensor mid-drive is offered in 500W, 750W and 1000W versions, with LCD display and 365-day warranty service.

A torque sensor is the central distinction of Varstrom’s TSDZ-2B Z8 mid-drive kit, giving shoppers a sensor-based alternative when choosing a conversion system. The listing identifies 500W, 750W, and 1000W options, along with an LCD display, making selected output and on-bike readout the main configuration decisions.

The torque-sensor mid-drive format and included LCD display give buyers two concrete elements to weigh: the listed sensor type and a way to view ride information. The specifications identify a 26-inch wheel size, disc brakes, and nine speeds, useful details when assessing a prospective build. The listing names three motor-power options rather than one fixed wattage, so shoppers should establish which version they are selecting before deciding whether its output suits their intended riding.

Skip it if you want one clearly stated motor wattage without choosing among three listed versions; Bafang’s BBS01B specifies a 500W mid-drive kit.

Consider this Varstrom kit if a torque-sensor mid-drive and a choice among three listed power levels match your conversion plan. Its specifications identify 26-inch wheels and disc brakes; settle on the wattage option before selecting.

Listed on Amazon as: TSDZ-2B Z8 TSDZ16 500W 750W 1000W Torque Sensor Mid Drive Kit

#4 · Best Display Detail

4. DDYOOK 1000W Hub Kit

• Wheel Size: 29 in
• Warranty Description: 2 year
• Weight: 24.3 lb

Best for: 700C display-focused builds.

Why it ranks #4: This 1000W hub kit lists a 29-inch rear wheel, LCD, PAS, five speed adjustments and a two-year warranty; battery is not included.

A display that tracks speed, mileage, battery power, and assist level distinguishes this DDYOOK kit for riders who want operating details visible while riding. The 48V 1000W hub conversion is listed for 700C and 28- or 29-inch wheels, with five speed settings and a cruise function also specified.

The display’s speed, mileage, battery, and assist readouts help riders monitor several aspects of operation from one interface; its listed cruise function adds another control option. Five-gear speed adjustment lets riders choose among the stated settings for differing road conditions. The kit includes a motor wheel, display, brake levers, controller, thumb knob, controller bag, and assembly accessories. Battery, charger, and tires are not included, and a 48V 13Ah-or-higher battery is recommended.

Skip it if you need a battery and charger in the package; Bafang’s BBS02B title specifies a 48V 16Ah battery and charger.

Choose this if a readout-rich display and five speed settings fit your 700C, 28-, or 29-inch conversion. Plan separately for a compatible battery, charger, and tires, which the listing excludes.

Listed on Amazon as: Electric Bike Conversion Kit, 48V 1000W 700C 28"/ 29" Front/Rear Wheel Electric Bicycle Hub Kit Dual Mode Controller w/LCD Display & PAS, 5-Speed Adjustment E-Bike Conversion Kit

#5 · Best 20-Inch Wheel Option

5. LOYALHEARTDY 1000W Hub Kit

• Wheel Size: 20 in
• Weight: 18 lb

Best for: 20-inch hub-wheel riders.

Why it ranks #5: The 20-inch front/rear hub kit lists a 1000W motor, 48V/30A controller, 45Nm torque and 280-pound load capacity.

A 20-inch hub assembly offered in front- or rear-wheel form gives this LOYALHEARTDY kit flexibility in wheel placement for compatible builds. Its listed 1000W brushless motor, 48V/30A controller, and SW-810LED display pair high specified output with an on-bike readout for commuting and light off-road use.

The choice of front or rear wheel assembly lets buyers consider which end of a compatible bicycle they plan to convert, while the 20-inch size keeps the fit requirement specific. The 1000W brushless motor is rated at 45Nm torque and up to 42km/h no-load speed, and the 48V/30A controller is listed alongside it. A stated 280-pound load capacity adds a practical limit for evaluating the intended rider and cargo.

Skip it if you need a 26-inch wheel conversion; Mahugde’s 48V 1000W kit specifies a 26-inch hub-motor wheel instead.

This is a fit for a compatible 20-inch bike where front- or rear-wheel placement and a 1000W hub motor suit the build. Keep its stated 280-pound load recommendation in view.

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)

#6

6. DENEST 500W Front Kit

• Weight: 17.6 lb

Best for: 24-inch front-wheel conversions.

Why it ranks #6: Its 36V, 500W front-wheel kit specifies a 24-inch wheel and dual-mode controller; a 36V battery of at least 13Ah is recommended but not included.

A 24-inch front wheel paired with a 36V 500W brushless gear motor defines this DENEST conversion kit’s fit and power profile. Its dual-mode controller is another distinguishing feature, while the listing describes smooth, low-noise motor operation and no brush replacement, giving maintenance-conscious riders a specific reason to consider this hub conversion.

The front-wheel format and 24-inch size make wheel compatibility the first practical check; the kit is not a general-purpose wheel replacement. Its brushless gear motor is described as smooth and low-noise, and the listing says it does not require brush replacement, reducing that particular maintenance task. The dual-mode controller is specified, while the recommended battery is 36V 13Ah or higher capacity and is not included, so battery sourcing is part of the build.

Skip it if you want a battery included with your kit; Bafang’s BBS01B listing specifies a 36V 17.5Ah battery and charger.

Pick this for a 24-inch front-wheel conversion if the 36V 500W motor and dual-mode controller suit your plan. You will need to source a battery separately, following the stated 36V 13Ah-or-higher recommendation.

Listed on Amazon as: Electric Bike Conversion Kit 36V 500W 24" Ebike Wheel Kit Dual Mode Controller Front Wheel E-Bike Conversion Kit Cycling Hub Conversion Kit

#7

7. Bdujhit 1500W Rear Kit

Best for: 20-inch rear-wheel upgrades.

Why it ranks #7: This 48V, 1500W rear-hub kit includes PAS and an LCD display, but its 20-inch wheel format and limited listed fit details narrow its appeal.

A 48V 1500W rear hub motor in a 20-inch wheel makes this Bdujhit kit a specific option for riders converting a bicycle around that wheel size. The listing pairs the motor with a PAS sensor and LCD display, bringing pedal-assist sensing and a ride readout into the conversion setup.

The 20-inch rear-wheel format makes this a more targeted choice than a general mid-drive kit, so the wheel size should anchor fit planning. Its PAS sensor supports pedal-assist operation, while the LCD display supplies an on-bike interface. The manufacturer lists a 48V 1500W controller and an approximate 150kg maximum load capacity. Those details can help buyers assess intended setup and load, but the fixed 20-inch rear-wheel format remains the main compatibility boundary.

Skip it if you need a wheel size other than 20 inches; LOYALHEARTDY’s 20-inch kit also targets that size, while DENEST lists a 24-inch wheel.

This kit fits a conversion plan centered on a 20-inch rear wheel, PAS, and an LCD display, with a stated 150kg approximate load limit. Look elsewhere if your bicycle uses another wheel size.

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

#8

8. Mahugde 1000W Hub Kit

• Wheel Size: 26 in
• Warranty Description: 1
• Weight: 22.9 lb

Best for: 26-inch hub-wheel conversions.

Why it ranks #8: The 1000W rear hub wheel is specified for 26-inch bikes and includes a thumb throttle and pedal-assist sensor, but battery details are absent.

A 48V 1000W rear hub motor wheel gives this Mahugde kit a clear focus: converting a bike with a 26-inch wheel around a powerful hub-motor setup. The listing also names a thumb throttle and pedal-assistant sensor, giving riders two specified control elements to consider alongside the wheel replacement.

The 26-inch wheel specification helps owners screen for a matching wheel size before planning the conversion, while the aluminum-magnesium-alloy wheel is a stated material detail. A thumb throttle and pedal-assistant sensor provide listed control options, and the 1000W rating identifies the motor output. The included-components field names one motor wheel, so buyers should review the package scope carefully when planning the rest of the electrical system and installation.

Skip it if you want a package whose included-components field names the display, controller, and brake levers; DDYOOK’s 48V 1000W kit lists those parts.

Choose this for a 26-inch conversion centered on a 48V 1000W hub wheel with throttle and pedal-assist sensing. Its included-components field names the motor wheel, so account for the rest of the build separately.

Listed on Amazon as: Electric Bike Conversion Kit, 48V 1000W 26" E-Bike Hub Motor Wheel Kit Rear Wheel Powerful Motor with Thumb Throttle and Pedal Assistant Sensor, E-Bike Hub Motor Conversion Kit for 26 Inch Bike

#9

9. GOSHET 2000W Hub Kit

• Wheel Size: 27 in
• Warranty Description: 2 years

Best for: 72V rear-wheel power seekers.

Why it ranks #9: Its 72V, 2000W rear hub kit lists an LCD and pedal-assist sensor, but the provided details do not identify battery inclusion or a clear wheel-size fit.

A 72V 2000W rear hub motor heads this GOSHET conversion kit, aimed at riders prioritizing high-output electric assistance. The listing also specifies a multifunction LCD display, pedal-assistant sensor, and 7-speed flywheel, bringing ride information, sensor input, and gearing into a rear-wheel conversion package.

The pedal-assistant sensor is described as transmitting pedaling frequency and force to the controller, which then adjusts assistance, tying rider input to motor response. A multifunction LCD display provides the named interface, while the 7-speed flywheel adds a specified gearing component. The controller bag offers a place to store the controller. The specifications identify a 27-inch wheel and 27.5-inch rim size, so check those measurements against the intended wheel setup.

Skip it if you need the wheel and rim dimensions to match clearly in the listing; MIOUYTRT’s 72V 2000W kit specifies selectable wheel sizes instead.

This suits riders seeking a high-output 72V rear-wheel setup with a sensor, display, and 7-speed flywheel. Check the listed 27-inch wheel and 27.5-inch rim dimensions carefully against your intended build.

Listed on Amazon as: Electric Bicycle Kit, 72V 2000W E-Bike Rear Wheel Hub Motor with Mutifunction LCD Display & Pedal Assistant Sensor, 60N.M 7-Speed Flywheel E-Bike Conversion Set US Stock

#10

10. MIOUYTRT 2000W Hub Kit

• Warranty Description: 2 YEAR
• Weight: 30.9 lb

Best for: Nine-level high-power builds.

Why it ranks #10: This 72V, 2000W rear hub kit lists 20-, 26-, 27.5- and 29-inch options, but only a motor wheel is listed among included components.

A 72V 2000W brushless gearless hub motor rated at 60Nm gives this MIOUYTRT kit its high-power profile for climbing and faster riding. The listing adds nine speed levels, cruise control, and a PAS sensor, pairing adjustable operation with pedal-synchronized assistance for mountain or city bike conversions.

The PAS sensor is described as syncing motor power with pedaling, which connects rider input to the kit’s assistance behavior. Nine adjustable speed levels and cruise control provide multiple listed operating choices, while the motor is rated at 560 RPM and 60Nm. The title names 20-, 26-, 27.5-, and 29-inch options, but the product title also identifies a 20-inch version; confirm the selected wheel size before planning a build.

Skip it if you need one unambiguous wheel-size specification before choosing; GOSHET’s 72V 2000W kit lists a 27-inch wheel and 27.5-inch rim instead.

This suits riders seeking 72V high-output assistance with nine speed levels and cruise control for city or mountain use. Verify the selected wheel-size version before planning installation, since the title and options span multiple sizes.

Listed on Amazon as: 72V 2000W E-Bike Conversion Kit, 20/26/27.5/29" Rear Wheel Electric Bicycle Brushless Gearless Hub Motor Conversion Kit w/LCD, 9-Speed Adjustment for Mountain/City Bike Conversion (20 Inch)