Best Motor For A Bike: 10 Gas and Electric Conversion Kits

#1 · Best Overall

1. BAFANG BBS02B Mid-Drive Kit

• Material: Aluminum

Best for: Mid-drive DIY conversion planners.

Why it ranks #1: The 750-watt, 48-volt mid-drive includes useful control and installation accessories, with optional battery and LCD choices for an electric conversion.

BAFANG’s BBS02B/BBS-HD mid-drive choice spans listed 500W, 750W and 1000W options, letting a builder select among several power levels. The kit includes core conversion accessories such as a brake lever, chainwheel, thumb throttle and speed sensor; battery and LCD are optional rather than standard inclusions.

A mid-drive layout places the conversion around the bicycle’s bottom-bracket area, making the supplied bottom-bracket removal tool relevant to installation. The included brake lever, chainwheel, thumb throttle and speed sensor cover several parts of the conversion workflow, while choosing optional battery and LCD components lets buyers configure the kit. Its listed 48V and 750W specifications describe one supplied configuration, alongside title options of 500W and 1000W. Battery charging and storage should follow manufacturer instructions.

Skip it if you require a battery and display in the stated standard kit; PROYONGOO’s 24V brushed-motor kit lists its motor and controller.

This is for DIY builders seeking BAFANG mid-drive options and useful installation accessories. Confirm the selected power configuration and plan separately for an optional battery or LCD; the supplied facts do not specify a universal frame fit.

Listed on Amazon as: BAFANG BBS02B BBS-HD 500W 750W 1000W Mid Drive Electric Bike Conversion Kit

#2 · Power Range

2. BAFANG CAN Bus Mid-Drive Kit

Best for: Programmable mid-drive upgraders.

Why it ranks #2: Selectable 500-, 750- and 1000-watt configurations and stated bottom-bracket widths of 68–73, 100 or 120mm suit varied builds.

CAN Bus control distinguishes this BAFANG mid-drive kit, pairing power options with USB programmability and an LCD display for riders who want setup control. The listing gives 500W, 750W and 1000W choices and specifies bottom-bracket widths of 68–73, 100 or 120mm, making frame dimensions an essential fit check.

The CAN Bus system is presented as supporting smooth power delivery, while USB programmability gives the owner a way to configure the system. An LCD display provides a ride interface, and the listed bottom-bracket sizes—68–73, 100 and 120mm—help narrow down frame compatibility before installation. Power and performance vary by selected version: the listing gives different torque and maximum-speed figures for 500W, 750W and 1000W. Battery is optional, so it is a separate configuration decision.

Skip it if you need a battery included with a simpler brushed-motor package; PROYONGOO’s 24V 250W kit lists a motor and controller.

Consider this for a programmable BAFANG mid-drive build where CAN Bus and the display suit the setup. Match the stated bottom-bracket width and selected power option to the bike; battery inclusion is not standard.

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

#3 · Battery Option

3. BAFANG BBSHD Mid-Drive Kit

Best for: Battery-option BAFANG mid-drive builders.

Why it ranks #3: This BAFANG conversion offers 500-, 750- and 1000-watt configurations, with 48V or 52V battery options and specified bottom-bracket dimensions.

This BAFANG BBSHD/BBS02 family kit offers 48V or 52V battery configurations alongside listed 500W, 750W and 1000W motor options, making configuration the central buying decision. The battery’s BMS protection board is described as balancing charging and cutting power under several fault conditions, while a display is included in the title.

The BMS-equipped battery is described as cutting power during overheating, low voltage, overcharging, overdischarging, overload or short circuit, adding specified battery-protection behavior to the setup. The listing distinguishes battery compatibility by voltage and motor power, so choosing a matched configuration matters. It also gives bottom-bracket inner and outer diameter ranges of 34–36mm and 40–44mm, respectively. Gear-size options vary by motor configuration, with 42T, 44T and 46T listed; check the relevant option before planning installation.

Skip it if you want a kit with explicitly listed 68–73, 100 and 120mm bottom-bracket widths; BAFANG B0FP2HQPY7 gives those options.

This suits a BAFANG mid-drive builder who wants a battery configuration with described BMS protections and can match voltage, motor power and bottom-bracket dimensions. Verify the chosen gear-size option, since it varies by configuration.

Listed on Amazon as: BAFANG BBSHD 48V/52V 500W 750W 1000W Mid Drive Kit with Battery Optional BBS01 BBS02 8FUN DIY Conversion Kit with LCD Display & Chainring Mountain Bike, Road Bike

#4 · Rear Hub Pick

4. Bdujhit 1500W Rear Hub Kit

Best for: PAS-assisted rear-wheel commuters.

Why it ranks #4: The 48V, 1500-watt rear hub kit includes a PAS sensor, LCD display and controller, making it a substantial wheel-based electric conversion.

A 48V, 1500W brushless gearless rear hub is the defining feature of this Bdujhit conversion kit, providing an electric-wheel route for commuting and short rides. Its PAS sensor and LCD display add pedal-assist operation and ride information, while the kit is specified with a 20-inch rear wheel and seven gears.

The rear hub motor and included 48V 1500W controller form the electric drive system, while the PAS sensor supports assistance while pedaling. An LCD display gives the rider a dedicated place to view ride information. The 20-inch wheel specification makes wheel size a key compatibility consideration before replacing a bicycle’s rear wheel. A stated maximum load of about 150 kg helps buyers assess its listed load limit, and the dual-layer rubber wheel is part of the supplied rear-wheel assembly.

Skip it if you need a mid-drive kit for a different wheel setup; BAFANG BBS02B/BBS-HD B0DL5G6XWN is a mid-drive option.

Choose this for a 20-inch-wheel electric conversion where PAS, an LCD and the stated 150 kg load limit suit the intended commute. Its rear-wheel format and seven-gear specification make wheel and drivetrain compatibility central.

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

#5 · Gas Engine Pick

5. IMAYCC 100cc Engine Kit

Best for: Hands-on 100cc kit installers.

Why it ranks #5: This 100cc two-stroke kit is specified for 26- to 28-inch bikes and includes a 3L fuel tank and 44-tooth sprocket.

A 3-liter fuel tank is a practical distinction in IMAYCC’s 100cc, two-stroke bicycle conversion kit, which is listed for 26–28-inch bikes. The package also specifies a 44-tooth sprocket and a heavy-duty 415 drive chain, giving installers concrete drivetrain details to consider alongside the engine conversion.

The supplied 44-tooth sprocket and 415 heavy-duty chain identify key drivetrain components for the conversion, while the 3-liter tank provides a stated fuel capacity. Installation is not a quick plug-in task: the listing calls for basic hardware skills and tools, with about two to four hours for installation and fine-tuning. Its 26–28-inch fit range helps screen bike size, and the product is a single-cylinder, two-stroke gasoline engine. Read the instructions before beginning.

Skip it if you want a 36-tooth sprocket and a listed 200kg load capacity; CUBELLIN’s 100cc kit supplies those specifications.

This suits a hands-on builder whose bike falls within the stated 26–28-inch range and who can handle basic installation and tuning. The 3-liter tank and specified chain are useful details, but allow the listed setup time.

Listed on Amazon as: IMAYCC Bike Motor Kit 100cc Motorized Bike Kit 2 Stroke Gas Bicycle Engine Conversion Kit Fit for 26-28" Bikes Black

#6

6. YUNLAIGOTOP 100cc Engine Kit

• Material: Aluminum

Best for: DIY gasoline conversion builders.

Why it ranks #6: The complete 100cc gas kit fits 26- to 28-inch bikes, lists 1.9kW maximum power and includes an upgraded carburetor and CDI.

A 44-tooth sprocket paired with an upgraded CDI gives this YUNLAIGOTOP 100cc kit a specific starting point for a gasoline bicycle conversion. Its air-cooled, two-stroke engine is listed for 26–28-inch bikes, while the included carburetor has adjustable jets and screws for tuning the setup.

The kit bundles the engine-conversion parts, including the 44-tooth sprocket, red carburetor and upgraded CDI, so buyers have key components for the conversion together. The carburetor’s re-jettable main jet, pilot jet, idle RPM screw and idle-air screw provide adjustment options during tuning. Air cooling avoids a separate liquid-cooling setup, while the listed kick starting and two-stroke oil requirement shape the operating routine. The stated maximum speed is 48 km/h; the listing does not provide installation time.

Skip it if you want an electric setup with PAS and an LCD; Bdujhit’s 48V rear-hub kit includes both.

This suits a DIY builder seeking a gasoline conversion with adjustable carburetor settings and an included sprocket. The stated 26–28-inch fit and two-stroke oil requirement matter; plan for tuning and check the listed bike-size range.

Listed on Amazon as: 100cc Bicycle Engine Kit 2 Stroke Motorized Bicycle Engine Motor Kit Gas Bicycle Engine Conversion Kit with Air-Cooling, Bike Motor Kit Fit for 26"-28" Bikes

#7

7. CUBELLIN 100cc Engine Kit

• Material: Aluminum, Iron

Best for: Fuel-conscious 36-tooth conversions.

Why it ranks #7: This 100cc, air-cooled two-stroke kit includes assembly accessories, specifies a 36-tooth sprocket and lists a 440-pound maximum load.

A 36-tooth sprocket sets this CUBELLIN 100cc conversion apart from kits with other listed sprocket counts, making drivetrain choice a key part of the buying decision. It is an air-cooled, single-cylinder two-stroke engine, and the listing gives a maximum speed of 48km/h and a 200kg maximum load capacity.

The 36-tooth sprocket and included assembly accessories give buyers defined drivetrain and installation components to work with; assembly is required. The listing states fuel consumption of 150 miles per gallon and a 48km/h top speed, which help characterize the intended motorized-bicycle use. A 200kg maximum load capacity is also specified. The frame materials are listed as aluminum and iron, and the stated wheel size is 26 inches, so buyers should account for those details when assessing their bike.

Skip it if you need an electric rear-hub setup with PAS and an LCD; Bdujhit’s 48V 1500W kit includes those features.

This is for a builder selecting a 100cc gas conversion with a 36-tooth sprocket and the listed load capacity. Assembly is required, and its 26-inch wheel specification is a relevant fit consideration before purchase.

Listed on Amazon as: 100cc Bicycle Engine Kit 2 Stroke Motorized Bike Motor Kit

#8

8. Seoqudcty 80cc Engine Kit

• Material: Alloy Steel

Best for: CDI gas-bike conversion builders.

Why it ranks #8: The 80cc gas kit lists 1.85kW output and includes a fuel tank, chain, carburetor and CDI, but has no stated warranty.

An electronic CDI ignition paired with a listed 1.85kW, 80cc two-stroke engine defines this Seoqudcty conversion kit. The listing gives a 25–30mph speed range and identifies mountain or cruiser bikes with 26–28-inch wheels, while an electronic speedometer and fuel tank are among the stated included components.

The CDI ignition is described as non-contact electronic ignition, and the kit’s included electronic speedometer gives the rider a readout component after conversion. Its 1.85kW output is listed at 5500rpm, with a 25–30mph top-speed range; the precision-balanced single-cylinder description connects the engine design with smoother power transfer. The stated 18:1 gas-to-oil ratio applies during break-in, an important setup detail. The package also lists a chain, fuel tank, carburetor and ignition coil.

Skip it if you want a larger 110cc engine with a 2-liter tank; Mahugde’s 110cc conversion lists that tank capacity.

This suits a builder considering an 80cc conversion for a listed 26–28-inch mountain or cruiser bike and valuing a speedometer in the kit. Follow the stated break-in mixture ratio and account for the gasoline-engine setup.

Listed on Amazon as: 80cc Bicycle Engine Kit – 2-Stroke 1.85kW Motorized Bike Motor with CDI Ignition for 26-28" Mountain/Cruiser Bikes, Complete Conversion Set

#9

9. Mahugde 110cc Engine Kit

Best for: V-frame gasoline conversion DIYers.

Why it ranks #9: Its stated 3kW maximum power and 2L tank may suit gas-conversion shoppers, though the supplied fit description is less specific.

A 2-liter fuel tank and 110cc, air-cooled two-stroke engine define Mahugde’s gasoline conversion kit for 26- or 28-inch bikes. Its listed 3kW output at 6000rpm sets it apart from lower-output engine choices, while the V-shaped-frame fit note makes frame layout and triangular space important before installation.

The V-shaped-frame compatibility note calls for ample triangular space, so checking the frame layout is a practical first step. Its 2-liter tank provides a stated capacity for the gasoline-and-oil mixture, and the foot-pedal starting mode defines how the engine is started. Air cooling avoids a separate liquid-cooling system, while CDI ignition is part of the listed setup. The listing specifies a 16.4:1 total transmission ratio and a 6:1 compression ratio; no fuel-mixture proportion is supplied in the provided details.

Skip it if you want a supplied 3-liter tank and 44-tooth sprocket; IMAYCC’s 100cc kit lists both.

This fits a DIY rider with a V-shaped frame and enough triangular space for the listed conversion. Its 110cc engine, foot-pedal start and 2-liter tank define the setup; verify frame layout before committing to installation.

Listed on Amazon as: Upgraded 110cc Bicycle Engine Kit, 2-Stroke Gas Motorized Bicycle Conversion Kit for 26" /28" Bikes Fit Petrol Gas Motor Kit Engine Refit Full Set with CDI for DIY Motorized Bicycle Bike (Black)

#10

10. PROYONGOO 24V Brushed Motor Kit

• Material: Aluminum, Copper, Iron

Best for: Simple 24V throttle conversions.

Why it ranks #10: The 24V, 250-watt brushed motor is a lower-powered electric option, but its specifications provide less detail about bike fit than other kits.

A rotary throttle controls this PROYONGOO 24V, 250W brushed motor, offering a direct way to manage assistance without relying on pedal-assist operation. The listed package includes the DC motor, controller and assembly accessories, while its 330rpm motor speed and 13.4A rated current help define the electrical setup.

The rotary throttle is the stated riding control, so speed management comes through the handlebar grip rather than a listed PAS sensor. A 24V brushed DC motor and included controller establish the system’s electrical components, while the assembly accessories support conversion work. The motor is listed at 250W and 330rpm, with a rated current of up to 13.4A. Aluminum, iron and copper construction with a baking-paint process is specified for the motor, but the supplied details do not state bike-size compatibility.

Skip it if you need a rear-wheel PAS kit with an LCD; Bdujhit’s 48V 1500W conversion includes both.

This suits riders seeking a modest 24V, 250W motor with grip-throttle control and a controller in the package. Check the installation requirements against your bicycle, since the supplied listing gives no wheel-size fit range.

Listed on Amazon as: Electric Bicycle Motor Kit, Brushed Motor, 24V 250W