10 Best Bicycle Engine Kit of October 2025

• 🚴‍【Powerful Engine】Single Cylinder, Air-Cooling, 2-Stroke Gasoline Engine. This 2-stroke 80cc engine kit is perfect to upgrade the regular bike to a motorized bike, which allows you to enjoy riding at a faster speed.
• 🚴‍【Increase Speed】This 80cc petrol gas engine kit is used to upgrade the regular bike to a motorized bike, which can reach 38km/h. It almost runs as fast as a motorcycle or scooter. This engine kit fits most 26" or 28" bikes with V-frame.
• 🚴‍【Quiet and Slight Vibration】When you use it after installation, it only has a slight noise and slight vibration, which will not disturb. Just ride the bike and enjoy scenery without wasting too much energy.
• 🚴‍【Super Fuel-efficient】Heavy duty metal engine body for added durability. Only consuming 2.5 litre fuel per 100km. Ignition Mode:CDI.
• 🚴‍【Easy to Assemble】Only some basic hardware skills, tools, and fine tuning adjustments, you could have a electric bicycle. If you have any questions about our products, please contact us in time, we will reply within 24 hours and solve the problem for you immediately.

GOFULY

• ✅【USA 2-10 Days Delivery】 Our products are sent from the US warehouse, and it only takes 2-10 days to arrive! !
• ✅【80CC Bicycle Engine Kit】2-Stroke 80cc bicycle engine kit is perfect to upgrade the regular bike to a motorized bike, fit for most type 26" and 28" bikes.
• ✅【Fuel Type】Gasoline 90#, super fuel-efficient, only consuming 2.5L fuel/100km.
• ✅【Easy To Install】Comes with all needed hardware for easy installation
• ✅【Worry-Free Shopping Service】Viadha Store provide up to 12 months of return service and have a professional customer service team to help you solve problems 24 hours a day ! !

Viadha

• 49cc 4 stroke pull start petrol conversion kit fits for normal 28” V frame bike and 26” ATV bike , both with 28-40mm frame tube. Note: Installation instruction not included.It is recommended to find a professional to install or refer to videos online by searching "49CC bike motor installation".
• This 4 stroke bicycle engine kit is more stable, more reliable and Quieter than the 2 stroke rivals.
• Mode of engine: single cylinder, air-cooling, 4-stroke; Compression ratio:8.0 : 1; Ignition System: Transistorized magneto ignition. Pls note: The switch has two cables (green and black) and the engine has one cabel (black), you can just connect the black to black and don' t need to connect the green cable.You can wrap it with a electrical tape.
• 4-stroke 49cc bike engine kit is perfect to upgrade the regular bike to a motorized bike,you can enhance the riding experience by accelerating the speed.
• With powerful motor and 44 tooth 9 hole sprocket, this motor is with speed 27-32 MPH / or 43-51 KPH.With 41.8 x 36 mm bore stroke,49 cm3 displacement, oil tank capacity 2.5.

Anbull

• This 80CC kit fits basically any male bicycle in the world!!! Just check where the engine mounts in the pictures to verify you have enough room to mount the motor!!!
• Fits most 26" or 28' wheeled bikes with V-frame. The frame should have 9-11" of clearance between the bottom bracket and top bar, and the diameter of the frame tubes should be 25-29mm (around an 1")
• Fuel Ration: 16:1, 20:1 after running in
• Easy installation: we have detailed manual book and instruction based on our years of rich experience
• Includes a complete engine kits, such as 2 stroke air-cooled motor,110 415 links, 2L oil tank,19mm connect carburator, etc

JDMSPEED

• ☛ A complete engine kit for converting your bike
• ☛ Super fuel-efficient, only consuming 2.5 litre fuel per 100km
• ☛ Comes with all needed hardware for easy installation
• ☛ Fit for most type 24" 26" and 28" bikes, such as mountain bikes, road bikes,cruisers, choppers
• ☛【2 Year Warranty】Your Satisfaction is Our Goal. If you encounter any problems before or after your purchase, you can contact us and our professional customer service team will reply as soon as possible within 24 hours.

Gosuguu

• 【80cc 2-stroke bicycle motor kit】The engine kit contains all the parts and user manual.It is perfect to upgrade the regular bike to a motorized bike,you can enjoying riding at a faster speed, which can reach 38km/h as fast as a motorcycle or scooter.The user manual is contained in the package.If you need the installation video, please contact us by email.One Year Warranty Covers the Motor, to Provide Parts Free.
• 【Will it fit for your bike?】Fit for most type 26 and 28 inches bikes, such as mountain bikes, road bikes,cruisers, choppers.Just a regular mens bicycle with traditional "diamond" shape frame will work.The frame should have 9-11" of clearance between the bottom bracket and top bar, and the diameter of the frame tubes should be 25-29mm (around an 1").The diameter of the large sprocket center hole is about 1.41 inches. Please measure the rear axle size of your bicycle first.
• 【Be assured the mixing ratio for fuel and oil】16:1 for break period (first 300-500 miles) / 20:1 after (18:1 is much better in summer because of the hot weather);air cylinder might take some time to adjust to the load. Thus to avoid possible complications for the motor, please limit the riding time to a maximum of 1 hour for the first few rides.
• 【Mode of engine】Type of Sparking Plug:Z4C 14MM;single cylinder, air-cooling, 2-stroke;Ignition Mode:CDI;model of chain:415; chain length:110 links, 55 inches.Driving ratio:18: 01,fuel type:Gasline Premium;lubrication oil: Oil for 2-stroke petrol engine (or oil for 10W/40.10W/30);bore and stroke-47mm & 40mm, Max. power 3 horsepower/5000r/min, Super fuel-efficient, only consuming 2.5L fuel/100km.
• 【Installation tips】The rider needs basic hardware skills, tools,and around 2-3 hours for installation and fine tuning adjustments.Add some lubricant into the air cylinder before starting.If you don't have experience or the first time on installing the motor kit,before installing,please kindly read our instruction and search "80cc bicycle engine kit" on youtube,it will give a big help and troubleshoot a lot of issues during installation process.

Yaheeda

• 🚲This 80cc petrol gas engine kit is used to upgrade the regular bike to a motorized bike., which can reach 38km/h. It almost runs as fast as a motorcycle or scooter.
• 🚲Heavy duty metal engine body for added durability.Super fuel-efficient, only consuming 2.5 litre fuel per 100km
• 🚲Fit for most type 26" and 28" bikes, such as mountain bikes, road bikes,cruisers, choppers. Comes with all needed hardware for easy installation
• 🚲Please also keep in mind that the motor will use a mix of gasoline and oil. The oil is used as a lubricant. Without it, the performance and longevity of the motor will be reduced.
• 🚲If you encounter any problems, please let us know, and we will provide you with satisfactory service until you are satisfied!

• 【80cc 2-stroke bicycle motor kit】The engine kit contains all the parts and user manual.It is perfect to upgrade the regular bike to a motorized bike,you can enjoying riding at a faster speed, which can reach 38km/h as fast as a motorcycle or scooter.The user manual is contained in the package.If you need the installation video, please contact us by email.One Year Warranty Covers the Motor, to Provide Parts Free.
• 【Will it fit for your bike?】Fit for most type 26 and 28 inches bikes, such as mountain bikes, road bikes,cruisers, choppers.Just a regular mens bicycle with traditional "diamond" shape frame will work.The frame should have 9-11" of clearance between the bottom bracket and top bar, and the diameter of the frame tubes should be 25-29mm (around an 1").The diameter of the large sprocket center hole is about 1.41 inches. Please measure the rear axle size of your bicycle first.
• 【Be assured the mixing ratio for fuel and oil】16:1 for break period (first 300-500 miles) / 20:1 after (18:1 is much better in summer because of the hot weather);air cylinder might take some time to adjust to the load. Thus to avoid possible complications for the motor, please limit the riding time to a maximum of 1 hour for the first few rides.
• 【Mode of engine】Type of Sparking Plug:Z4C 14MM;single cylinder, air-cooling, 2-stroke;Ignition Mode:CDI;model of chain:415; chain length:110 links, 55 inches.Driving ratio:18: 01,fuel type:Gasline Premium;lubrication oil: Oil for 2-stroke petrol engine (or oil for 10W/40.10W/30);bore and stroke-47mm & 40mm, Max. power 3 horsepower/5000r/min, Super fuel-efficient, only consuming 2.5L fuel/100km.
• 【Installation tips】The rider needs basic hardware skills, tools,and around 2-3 hours for installation and fine tuning adjustments.Add some lubricant into the air cylinder before starting.If you don't have experience or the first time on installing the motor kit,before installing,please kindly read our instruction and search "80cc bicycle engine kit" on youtube,it will give a big help and troubleshoot a lot of issues during installation process.

Yaheeda

• 【80cc 2-stroke bicycle motor kit with speedometer】Includes everything needed in order to assemble a hardworking and reliable motor bicycle. Fits for most type 24", 26" and 28" bikes with V-frame, such as mountain bikes, road bikes, cruisers, choppers.
• 【Powerful Engine】This electric motorbike kit equipped with the single cylinder, air-cooling, 2-stroke 80cc single cylinder gasoline engine. It adopts first-rate steel material, of great strength and hardness for endurance, which can provide you with a long service life.
• 【Ignition Safely】Capacitor discharge ignition method, which is safer and more stable in use. Therefore, this type of ignition will not cause the wear and tear on the contact points when the bike engine is spinning at high speed, which ensures high performance and durability.
• 【Convenient Operation】This great design makes bike easy and quick to put together; riders just need to fit the motor to the frame, connect the cables, and fill up the gas tank in order to be ready for their first ride.
• 【Faster Speed & Fuel-efficient】Fast and smooth, can speed up to 50km/h. It almost runs as fast as a motorcycle or scooter, making your outdoor trip more convenient. With a 2L fuel tank and a fuel-efficient single cylinder gas engine, your motorcycle can have better endurance to support long distance riding.

YUEWO

• 🚴 2-Stroke 80cc engine kit is perfect to upgrade the regular bike to a motorized bike,you can enjoying riding at a faster speed, which can reach 38km/h as fast as a motorcycle or scooter. (For installation video,pls contact with us via email)
• 🚴 Fits for Most 26" or 28' wheeled bikes with V-frame. The frame should have 9-11" of clearance between the bottom bracket and top bar, and the diameter of the frame tubes should be 25-29mm (around an 1").
• 🚴 Lubrication Oil: oil for 2-stroke petrol engine (or oil for 10W/40.10W/30);Be assured the mixing ratio for fuel and oil:16:1 for break period (first 300-500 miles) / 20:1 after (18:1 is much better in summer because of the hot weather);air cylinder might take some time to adjust to the load. Thus to avoid possible complications for the motor, please limit the riding time to a maximum of 1 hour for the first few rides.
• 🚴 Key parameters: bore and stroke-47mm & 40mm, Max. power 3 horsepower/5000r/min, Super fuel-efficient, only consuming 2.5L fuel/100km.
• 🚴 Mode of Engine: Single cylinder, air-cooling, 2-stroke Natural air cooling; The rider needs some basic hardware tools, skills and around 2-3 hours to install. Add some lubricant into the air cylinder before starting.

Anbull