Ever dreamed of turning your trusty bicycle into a speedy motorized machine? Imagine cruising past traffic jams without breaking a sweat! That dream is totally possible with a bicycle engine kit. But let’s be honest, diving into the world of engine kits can feel like trying to read a map in the dark. There are so many brands, sizes, and types, and it’s easy to feel lost in technical jargon.
You want more power for your commute or longer rides, but you worry about reliability, installation headaches, or choosing the wrong kit for your bike. Finding the perfect balance between power, price, and ease of use is tough. That is where we step in. This post cuts through the confusion. We break down exactly what you need to know to select the best bicycle engine kit for your needs.
By the end of this guide, you will understand the key features that matter most. You will learn how to avoid common pitfalls and confidently pick a kit that transforms your ride. Ready to ditch the sweat and embrace the motorized fun? Let’s explore the best options available today.
Top Bicycle Engine Kit Recommendations
- 【Installation Notes】The rider will need basic hardware skills and tools, and about 2-4 hours of installation and fine tuning. If you are inexperienced or installing engine kit for the first time, please read our instructions and search "IMAYCC Bicycle Engine Kit" on Youtube before installation, it will give you a great help and solve a lot of problems during installation
- 【100cc Bicycle Engine Kit】Come with a complete engine kit, 2-stroke single cylinder gasoline engine, the engine power/speed is 2kw/6500rpm, so you can enjoy a faster riding speed, the upgraded bicycle has better durability and supports long-distance riding, make it easier to use outdoors
- 【100cc Bike Motor Kit】Engine type: single-cylinder, air-cooled, two-stroke, starting method: foot pedal starting, Ignition method: CDI ignition, number of sprocket teeth: 44 teeth, number of chain teeth: 110 knots, Spokes: 36
- 【Bicycle Motor Compatibility】IMAYCC bike engines are suitable for most 26-28" wheeled bikes (mountain bikes, cruisers, motorcycles, road bikes) with V-frames. There should be 10" and more clearance between the bottom bracket and top bar of the frame, especially 26" bike. Please confirm the installation space in advance, alternatively visit the ‘Contact Seller'
- 【3L Black Teardrop Fuel Tank】Fuel type: 90#, Mixing Ratio of Fuel and engine oil: 16:1 for new equipment, 20: 1 the run-in period (after running 500km). Driving on a smooth road with a speed of 35-40km/h and a maximum speed limit of 50km/h, the fuel consumption is 2.5L per 100km
- 【Installation Notes】The rider will need basic hardware skills and tools, and about 2-4 hours of installation and fine tuning. If you are inexperienced or installing engine kit for the first time, please read our instructions and search "IMAYCC 80cc bicycle engine kit" on Youtube before installation, it will give you a great help and solve a lot of problems during installation
- 【80cc Bicycle Engine Kit】Come with a complete engine kit, 2-stroke 80cc single cylinder gasoline engine, wired digital computer, the engine power/speed is 2.1Kw/5000rpm, so you can enjoy a faster riding speed, the upgraded bicycle has better durability and supports long-distance riding, make it easier to use outdoors
- 【80cc Bike Motor Kit】Engine type: single-cylinder, air-cooled, two-stroke. Starting method: foot pedal starting. Ignition method: CDI ignition. Number of sprocket teeth: 44 teeth. Number of chain teeth: 110 knots. Spokes: 36
- 【Bicycle Motor Compatibility】IMAYCC bike engines are suitable for most 26-28" wheeled bikes (mountain bikes, cruisers, motorcycles, road bikes) with V-frames. There should be 10" and more clearance between the bottom bracket and top bar of the frame, especially 26" bike. Please confirm the installation space in advance, alternatively visit the ‘Contact Seller'
- 【2.5L Black Teardrop Fuel Tank】Fuel type: 90#, Mixing Ratio of Fuel and engine Oil: 16:1 for new equipment, 20: 1 the run-in period (after running 500km). Driving on a smooth road at a speed of 20-25Km/h, fuel consumption of 2-2.5L per 100Km
- 【DIY-Friendly Installation with Support】The rider will need basic tools and mechanical aptitude, and about 2-4 hours of installation and fine tuning. We strongly recommend reviewing our detailed instructions and searching "IMAYCC 80cc bicycle engine kit" on YouTube before starting. This prep work significantly smoothens the process and helps avoid common installation hurdles
- 【Power Up Your Ride: 80cc Performance】Experience the thrill of enhanced speed and range. Come with a complete 80cc 2-stroke engine kit, delivering power/speed (2.1Kw/5000rpm), converting your standard bicycle into a durable, long-distance capable machine. Perfect for extending your outdoor adventures and commuting with ease
- 【Engine Specs & Components】Engine type: single-cylinder, air-cooled, 2-stroke engine with CDI ignition and foot pedal start. Kit includes a rugged 44-tooth drive sprocket, 110 knots chain teeth, and 36-spoke wheel for strength. Engineered for consistent performance
- 【Broad Bike Compatibility】 Designed to fit most common 26-28" wheel bicycles featuring a V-frame design (ideal for Mountain, Cruiser, Road styles). Critical Requirement: Ensure at least 10 inches of clearance between your bike's bottom bracket and the top bar for proper fitment
- 【2.5L Black Teardrop Fuel Tank】For optimal performance and engine longevity: Use 90# fuel mixed 16:1 (fuel:oil) initially, shifting to 20:1 after the 500km break-in period. Driving on a smooth road with a speed of 20-25km/h, the fuel consumption is 2-2.5L per 100km
- Fitment: Bike Engine Carburetor for 49cc 50cc 60cc 66cc 80cc 2 Stroke Bicycle Motorized Bicycle Bike.
- Package includes: 1 x Carburetor; 1 x CDI
- Material: Aluminum; Color: silver
- Intake inside diameter: 13mm / 0.51"
- Intake Bolt Hole Spacing: 38mm / 1.5"
- 【DIY-Friendly Installation with Support】The rider will need basic tools and mechanical aptitude, and about 2-4 hours of installation and fine tuning. We strongly recommend reviewing our detailed instructions and searching "IMAYCC Bicycle Engine Kit" on YouTube before starting. This prep work significantly smoothens the process and helps avoid common installation hurdles
- 【Power Up Your Ride: 100cc Performance】Experience the thrill of enhanced speed and range. Come with a complete 100cc 2-stroke engine kit, delivering power/speed (2kw/6500rpm), converting your standard bicycle into a durable, long-distance capable machine. Perfect for extending your outdoor adventures and commuting with ease
- 【Engine Specs & Components】Engine type: single-cylinder, air-cooled, 2-stroke engine with CDI ignition and foot pedal start. Kit includes a rugged 44-tooth drive sprocket, 110 knots chain teeth, and 36-spoke wheel for strength. Engineered for consistent performance
- 【Broad Bike Compatibility】 Designed to fit most common 26-28" wheel bicycles featuring a V-frame design (ideal for Mountain, Cruiser, Road styles). Critical Requirement: Ensure at least 10 inches of clearance between your bike's bottom bracket and the top bar for proper fitment, especially 26" bike. Please confirm the installation space in advance, alternatively visit the ‘Contact Seller'
- 【3L Black Teardrop Fuel Tank】For optimal performance and engine longevity: Use 90# fuel mixed 16:1 (fuel:oil) initially, shifting to 20:1 after the 500km break-in period. Driving on a smooth road with a speed of 35-40km/h and a maximum speed limit of 50km/h, the fuel consumption is 2.5L per 100km
- 44 Tooth Bicycle Engine Kit: Sproket :44 Teeth. The 44 Teeth Bicycle Engine Kit can convert a regular bicycle into a motorcycle AND includes all the parts and accessories. Ideal for upgrading your regular bike to an electric bike.
- Super Fuel-Efficientt: The 100cc motorized bicycle kit is powerful and durable, with a top speed of 48km/h. Low fuel consumption, 150 miles per gallon. Max. Load capacity:200kg（440lb).
- Double Strength and Safety: 4 bolts attach the engine to your bike frame and this Bicycle Motor Kit comes are 8mm vs the standard 6mm. That means the mounts are twice as strong and twice as secure. The aluminum engine body, iron fuel tank, and iron chain have better durability, and when combined with sandblasting, painting, and shot blasting treatment, they can provide stable operation for a long time.
- Complete Bicycle Motor Kit: Our package includes all the parts to convert your bicycle into a motorcycle, meeting your needs with just one purchase! This bicycle engine kit is more suitable for people with lower budgets or only short-term needs for motorcycles.
- Upgraded Tunable High Performance Carburetor: Choke lever on the handlebars, Main jet. (Can be re-jetted), Pilot jet, Copper oil needle , Idle RPM Screw, Idle Air Screw and has an Internal choke circuit that delivers more fuel with the choke on, instead of restricting air. 100CC Bicycle Engine Kit Great for cold weather starts!
- CONVERTING YOUR BIKE TO MOTORBIKE: The 2-Stroke Bicycle Gasoline Engine Motor Kit includes all the parts and accessories needed to convert a regular bike into a gasoline-powered motorcycle. Ideal to upgrade the regular bike to a motorized bicycle. Fits most 26" or 28" wheeled bikes with V-frame, such as Mountain bikes, Road bikes, Gravel Bikes, Beach bike, etc
- UPGRADED PERFORMANCE FOR YOUR SUPREME RIDING EXPERIENCE: For screw and bolts easily broken, we have upgraded premium quality hex socket screw and bolts to improve the performance. Come with a digital speedometer, enjoy a faster riding speed, The upgraded bicycle has better durability and supports long-distance riding. Make it easier to use outdoors
- MOTORIZED BIKE KIT POWER: 2.8kw/6000r/min; Top Speed: 50km/h; Fuel Economy: 3.8L/km; Fuel Type: #90, #92, #95; Mixing Ratio of Fuel and engine Oil: 16:1 for new sets breaking time, 20:1 after running 500KM. Please use premium quality oils to prolong engine life. And add some lubricant into the air cylinder before starting
- EASY TO ASSEMBLE: Notes: The kit needs basic hardware skills & tools, and it will around 2-3 hours for installation and fine tuning adjustments. If you do not have experience or the first time on installing the motor kit, before installing, please kindly read our instruction and search "80cc bicycle engine kit"video, it will give a big help and troubleshoot a lot of issues during installation process
- PERFECT AFTER-SALES SERVICE: If you are not satisfied with the product, please send us an email, and we will propose a satisfactory solution within 24 hours. You can buy it with confidence
- 【DIY-Friendly Installation with Support】The rider will need basic tools and mechanical aptitude, and about 2-4 hours of installation and fine tuning. We strongly recommend reviewing our detailed instructions and searching "IMAYCC Bicycle Engine Kit" on YouTube before starting. This prep work significantly smoothens the process and helps avoid common installation hurdles
- 【Power Up Your Ride: 100cc Performance】Experience the thrill of enhanced speed and range. Come with a complete 100cc 2-stroke engine kit, delivering power/speed (2kw/6500rpm), converting your standard bicycle into a durable, long-distance capable machine. Perfect for extending your outdoor adventures and commuting with ease
- 【Engine Specs & Components】Engine type: single-cylinder, air-cooled, 2-stroke engine with CDI ignition and foot pedal start. Kit includes a rugged 44-tooth drive sprocket, 110 knots chain teeth, and 36-spoke wheel for strength. Engineered for consistent performance
- 【Broad Bike Compatibility】 Designed to fit most common 26-28" wheel bicycles featuring a V-frame design (ideal for Mountain, Cruiser, Road styles). Critical Requirement: Ensure at least 10 inches of clearance between your bike's bottom bracket and the top bar for proper fitment, especially 26" bike. Please confirm the installation space in advance, alternatively visit the ‘Contact Seller'
- 【3L Black Teardrop Fuel Tank】For optimal performance and engine longevity: Use 90# fuel mixed 16:1 (fuel:oil) initially, shifting to 20:1 after the 500km break-in period. Driving on a smooth road with a speed of 35-40km/h and a maximum speed limit of 50km/h, the fuel consumption is 2.5L per 100km
Your Complete Guide to Buying a Bicycle Engine Kit
Thinking about giving your trusty bicycle a motorized boost? A bicycle engine kit can turn your pedal-power into petrol-power, making hills easier and commutes quicker. But choosing the right one takes a little homework. This guide helps you pick the best kit for your needs.
Key Features to Look For
When shopping, pay close attention to these main parts:
Engine Size (CC)
- 2-Stroke vs. 4-Stroke: Most common kits are 2-stroke (lighter, easier to install). 4-stroke engines are quieter and use less fuel but are usually heavier.
- Power Output: Kits usually range from 48cc to 80cc. Bigger engines mean more speed, but check your local laws regarding engine size limits for motorized bicycles.
Fuel Type and Efficiency
Most small engines use a mix of gasoline and 2-cycle oil (for 2-stroke engines). Look for kits that offer good miles per gallon (MPG). Better efficiency saves you money on gas.
Ignition System
A reliable magneto or electronic ignition system ensures your bike starts easily, even when cold.
Installation and Mounting
Check how easy the kit is to mount. Does it fit standard bicycle frames (like common V-frame or diamond frames)? Good kits come with clear instructions and all necessary mounting hardware.
Important Materials and Durability
The quality of the parts directly affects how long your engine lasts.
Engine Block and Head
- Aluminum vs. Cast Iron: Aluminum parts help keep the engine light. However, high-quality cast iron cylinders often handle heat better, leading to longer life, especially under heavy use.
- Gaskets and Seals: Strong, heat-resistant gaskets prevent leaks and maintain compression. Poor gaskets cause immediate problems.
Drive System Components
The chain, sprockets, and clutch assembly take a lot of stress. Look for heavy-duty steel components. Plastic chain tensioners will break quickly; metal ones are always better.
Fuel Tank and Lines
The fuel tank should be sturdy metal, not thin plastic. Fuel lines must be resistant to gasoline corrosion.
Factors That Improve or Reduce Quality
What makes one kit better than another?
Quality Factors (Good!)
- Upgraded Carburetor: A well-tuned carburetor (the part mixing air and fuel) improves performance and reliability.
- Good Spark Plugs: Reliable spark plugs ensure consistent starting.
- Effective Muffler: A quality muffler reduces noise significantly. Loud engines attract unwanted attention and can break faster.
Quality Reducers (Bad!)
- Cheap Bearings: Low-quality bearings wear out fast, leading to vibration and engine failure.
- Thin Wiring: Flimsy electrical wires can short out or break due to engine vibration.
- No Cooling Fins: Engines need fins to dissipate heat. Without good fins, the engine will overheat quickly, reducing its lifespan.
User Experience and Use Cases
How will you actually use this engine?
Commuting and Cruising
If you use the bike daily for short trips, focus on reliability and fuel economy. A slightly smaller, well-built 2-stroke engine often works perfectly here.
Hilly Terrain
If your area has steep hills, you need more torque. A larger displacement engine (like 66cc or 70cc) helps you maintain speed without overworking the small motor. You must ensure your bicycle frame is strong enough to handle the added speed and stress.
Installation Difficulty
Beginners should look for “complete kits” that include everything needed for mounting. Experienced mechanics might opt for a bare engine if they plan custom modifications.
Bicycle Engine Kit: 10 Frequently Asked Questions (FAQ)
Q: Are bicycle engine kits legal everywhere?
A: Laws change by state, county, and city. Some places limit engine size (often 49cc) or maximum speed. Always check your local traffic laws before riding.
Q: What kind of bicycle do I need?
A: Most kits fit standard “cruiser” or “beach cruiser” style bikes with a standard diamond frame. Mountain bikes sometimes work, but heavy suspension can make mounting difficult.
Q: How fast can these engines go?
A: Depending on the gearing, engine size, and rider weight, speeds typically range from 20 mph up to 35 mph for larger kits on flat ground.
Q: Do I still have to pedal?
A: Yes, often you must pedal a short distance to start the engine (especially 2-strokes). You can also use the engine to assist pedaling uphill or use the pedals if the engine runs out of gas.
Q: What is the normal fuel mixture for a 2-stroke kit?
A: The standard mix is usually 16 parts gasoline to 1 part 2-stroke oil (e.g., 50:1 or 32:1). Always follow the specific instructions that come with your engine kit.
Q: How long does it take to install a kit?
A: For a first-timer, installation can take anywhere from four to eight hours. Experienced builders can do it much faster.
Q: Will the engine damage my bicycle frame?
A: If installed correctly, the stress is usually manageable on a strong steel frame. However, very cheap or weak aluminum frames might fail under the strain of sustained high speed.
Q: Do these engines require a lot of maintenance?
A: Like any small engine (lawnmower, chainsaw), they need regular maintenance: checking the spark plug, cleaning the carburetor, and changing the oil mix regularly.
Q: Is it hard to find replacement parts?
A: For popular engine sizes (like 66cc), parts are generally easy to find online from specialized suppliers.
Q: What is the most common problem new users face?
A: The most common issue is improper carburetor tuning or using the wrong fuel mixture, which leads to difficulty starting or poor performance.