13 best bicycle engine kits

Name: Seeutek PK80 80cc Bicycle Engine Kit 2-Stroke Gas Motorized Bike Motor Kit Upgrade with Speedoemter
Brand: Seeutek
Price: 139.99 USD
Availability: InStock
Rating: 4.0 (250 reviews)

Bicycle engine kits, also known as motorized bicycle kits or bike engine kits, are popular among cycling enthusiasts who want to add an extra element of power and speed to their regular bicycles.These kits typically consist of several components that can be installed on a standard bicycle to turn it into a motorized vehicle. Here are the key components and information related to bicycle engine kits:

Engine: The heart of the kit is the engine. Most bicycle engine kits use small, lightweight, two-stroke or four-stroke gasoline engines. These engines usually have a displacement of 49cc or less, making them suitable for bicycles.
Mounting Hardware: The kit includes various mounting brackets, clamps, and hardware to securely attach the engine to the bicycle frame. Proper installation is essential for safety and performance.
Fuel Tank: You'll need a fuel tank to supply gasoline to the engine. Typically, these tanks are small and can be attached to the bicycle frame or handlebars.
Exhaust System: A muffler or exhaust pipe is included to channel exhaust gases away from the engine and reduce noise.
Drive Mechanism: Bicycle engine kits employ a drive mechanism that connects the engine's power to the bicycle's rear wheel. This can be a chain or belt drive system, depending on the kit.
Throttle Control: To control the engine's speed, a throttle control mechanism is included. It's usually a hand-operated grip on the handlebars, similar to a motorcycle throttle.
Ignition System: Most kits have a simple ignition system that allows you to start and stop the engine conveniently.
Brakes: Due to the increased speed and weight of a motorized bicycle, it's crucial to ensure that the braking system is in good condition. Some kits may include upgraded brake components.
Legal Considerations: Before installing a bicycle engine kit, it's important to be aware of local laws and regulations regarding motorized bicycles. In some areas, these bikes may require registration, insurance, and compliance with specific safety standards.
Performance: Bicycle engine kits can significantly increase the speed and range of a bicycle, depending on the engine's power and the bike's design. The actual performance will vary depending on the specific kit and installation.
Maintenance: Like any engine, the one in a bicycle engine kit requires regular maintenance, such as oil changes and spark plug replacements.
Safety: Safety is paramount when using a motorized bicycle. Riders should wear appropriate safety gear, including helmets, and exercise caution when operating the bike, especially at higher speeds.
Environmental Impact: Gasoline-powered bicycle engine kits emit pollutants, so they may not be the most environmentally friendly option. Some individuals opt for electric bicycle conversion kits as a greener alternative.

Bicycle engine kits can be a fun and practical way to enhance your cycling experience, but it's important to ensure that you install and use them safely and responsibly, adhering to local laws and regulations.

Below you can find our editor's choice of the best bicycle engine kits on the market

Seeutek PK80 80cc Bicycle Engine Kit 2-Stroke Gas Motorized Bike Motor Kit Upgrade with Speedoemter

Seeutek

Based on 918 reviews Check latest price

🚴 80cc Bicycle Engine Kit,Engine Type: Single cylinder,air-cooled,2-stroke.For screw and bolts easily broken, we have upgraded premium quality hex socket screw and bolts to improve the performance.
🚴 Motorized bike kit,Power: 5-6 HP (horse power) stock -Top Speed: 25-35 MPH (miles per hour) stock - Fuel Economy: 100-150 miles per gallon
🚴 Fuel Type:Gasoline 93#;Mixing Ratio of Fuel and engine Oil: 16:1 for new sets breaking time, 25:1 after running 300KM;Please use premium quality oils to prolong engine life. And add some lubricant into the air cylinder before starting.
🚴 Bonus Speedometer as gift,Fits Most 26" Wheeled Bikes (Mountain, Cruiser, Chopper, Road) 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").
🚴 Notes:The rider needs basic hardware skills, tools, and 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" on youtube, it will give a big help and troubleshoot a lot of issues during installation process.

User questions & answers

Question:	What are the fuel line dimensions
Answer:	The length of fuel line is about 25cm.
Question:	Can i steal electricity from the engine to run headlights
Answer:	I would use a separate unit. Making electricity costs a lot of power and will degrade performance. Battery or an old school bottle gen one. There are a bunch of ways to run a light. I'm a mod here. (Say hey if ya visit) motorbicycling dot cm Don't mean to "plug" just lots of threads on it and these kits.
Question:	how fast can I go on this
Answer:	25 is still moderate vibration, after that gets pretty numbing on the hands but with the stock components I already have est. 40 just breaking it in still only on the 4th tank but like i said it isn't comfortable cruzing speed and has had several issues already. Not a reliable mode of transportation but definitely fun to cruz.
Question:	Is a 1 speed or multi speed bike best speed best for this conversion
Answer:	I’ve found it does not matter as the motor does not use the gear set of a multi speed bike. The motor has its own gear setup so get ya one and get to it then cruise down the road. I’ve used 100 dollar beach cruiser single speed models from wallyworld and they work out well with these motor kits. The accessories are endless so kustomize yours but mostly just, Have Fun!

Anbull 80CC 26" 28" Bicycle Engine Kit, Bike Bicycle Motorized 2 Stroke Petrol Gas Motor Engine Kit

Ankul

Based on 332 reviews Check latest price

🚴 2-Stroke 80cc bicycle 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).
🚴 80CC Motorized Bike Kit :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); Mixing Ratio of Fuel and engine Oil: 16:1 for new sets, 20: 1 after running 500km.
🚴 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.

User questions & answers

Question:	what the type of petrol
Answer:	Gasoline 93#
Question:	How do you connect it to the bike
Answer:	Very easy, need to watch a YouTube videos
Question:	Do i need a special bike or just a regular street type bike
Answer:	I put mine on a $80 29 in.mens roadmaster bike from walmart.everthing fit and worked fine just a regular mens bicycle will work.you don't need anything special.hope this helps.
Question:	Does this motor need a chain tensioner
Answer:	It does come with a tensioner in the kit. This was my first time putting one together, and I had a little bit of trial and error how where to position the tensioner without the chain popping off, but at the end of the day the one that comes in the kit is great.

Product features

This 80cc petrol gas engine kit is used to upgrade the regular bike to a motorized bike.

Feature:
Mode of Engine:Single cylinder, air-cooling, 2-stroke
Bore & Stroke:47mm & 40mm
Rated Power:2.5Kw/5000r/min (3 horsepower/5000r/min)
Max Power:3.5Kw/6000r/min (5-6 horsepower/6000r/min)
Lubrication Oil: oil of 2-stroke petrol engine (Or oil for 10W/40.10W/30)
Mixing Ratio of Fuel and engine Oil:16:1 for new sets, 20: 1 after running 500km
Type of Sparking Plug:Z4C 14MM
Volume of oil Consumption:2.5L/100km
Type of Clutch:Friction Plate / Dry
Cooling Mode:Natural air cooling

Note:

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.
Be assured the mixing ratio of fuel and engine oil is 16:1 for new sets, 20:1(18:1 is much better in summer because of the hot weather) after running 500km.
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.
If you need Instruction or video,please contact our custom service.

Package Includes:

1x 80cc bicycle engine
1x Carburetor ,1x Ignition coil & CDI
1x Throttle handlebar set, 1x Throttle cable
1x Clutch cable, 1x Kill switch, 1x Clutch lever
1x Chain, 1x Chain cover, 1x 44T Sprocket W/ 9 Hole Clamp Pads
1x Chain Tensioner, 1x Fuel tank, Fuel filter, 1x Gasoline fuel line
1x Petcock, 1x Muffler, All the needed mounting brackets, gaskets, and hardware

Seeutek 26" or 28" 80cc Bike Bicycle Motorized 2 Stroke Cycle Motor Engine Kit Set

Seeutek

Based on 757 reviews Check latest price

User questions & answers

Question:	Will this work on a mongoose BMx bike
Answer:	It fits Most 26" Wheeled Bikes (Mountain, Cruiser, Chopper, Road) 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").
Question:	What bike can this engine go on
Answer:	Dear customer,this engine fits Most 26" Wheeled Bikes (Mountain, Cruiser, Chopper, Road) 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").
Question:	Does this work with a 7 speed mountain bike
Answer:	Yes. The sprocket mounts on the other side of the wheel. As long as it's not a full suspension bike. You might have to change your shift levers to a trigger style if you have twist grips. No rear disc brakes.
Question:	How fast it's the 80 cc engine, and the 66 cc engine
Answer:	40mph I’m about 150lbs fast for a bicycle

Ambienceo 80cc 2 Stroke Bicycle Engine Motor Gas Motorized Bike Motor Kit

Ambienceo JKL

Based on 21 reviews Check latest price

Product description

Specification:

Mode of Engine:Single cylinder, air-cooling, 2-stroke

Bore & Stroke:47mm & 40mm

Rated Power:2.5Kw/5000r/min (3 horsepower/5000r/min)

Max Power:3.5Kw/6000r/min (5-6 horsepower/6000r/min)

Ignition Mode:CDI

Model of Chain: 415

Chain Length: 110 links

Compression Ratio:6:01

Driving Ratio:18:01

Fuel Type:No.90

Capacity of Tank:2L

Speed Limitation:38km/hour

Lubrication Oil: oil of 2-stroke petrol engine (Or oil for 10W/40.10W/30)

Mixing Ratio of Fuel and engine Oil:16:1 for new sets, 20: 1 after running 500km

Type of Sparking Plug:Z4C 14MM

Volume of oil Consumption:2.5L/100km

Type of Clutch:Friction Plate / Dry

Cooling Mode:Natural air cooling

Package included:

1x Red 80cc 2-stroke engine

1x Sprocket clamp assembly with hardware

1x Exhaust muffler

1x Push button clutch

1x Heavy duty chain

1x Bearing chain tensioner / idler

1x Carburetor

1x CD ignition coil

1x Kill switch (on throttle)

1x Chain guard

1x Spark plug

1x Black gas tank with mounting brackets

1x Exhaust pipe clamp

1x Plug removal tool

1x Manual

All the needed mounting brackets, gaskets, and hardware

Ambienceo 2-stroke 80cc engine kit is perfect to upgrade the regular bike to a motorized bike,which enable you to enjoy riding at a faster speed, which can reach 38km/h as fast as a motorcycle or scooter.
The bicycle engine kit fits most 26" or 28" wheeled bikes (Mountain, Cruiser, Chopper, Road) 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")
Key parameters: bore and stroke-47mm & 40mm, Max. power 5 horsepower/6000r/min, Super fuel-efficient, only consuming 2.5L fuel/100km
Lubrication Oil: oil for 2-stroke petrol engine (or oil for 10W/40.10W/30); Mixing Ratio of Fuel and engine Oil: 16:1 for new sets, 20: 1 after running 500km
The rider needs some basic hardware tools, skills and around 2-3 hours to install. Add some lubricant into the air cylinder before starting.

User questions & answers

Question:	What is the big spring for in the bike motor kits
Answer:	It's to keep the clutch cable from burning up, the spring acts as a buffer/insulator to keep the clutch cable from rubbing against the hot engine and melting. no clue what dude is talking about (May 21, 2019) with a "tensioner" for the engine, it doesn't even make any since. These kit do have "Chain Tensioners" but they do not have springs, unless you buy special aftermarket ones and if you get the right bike and set your pineapple/ragjoint even on your wheel hub you don't need them so much. in face if you get on of the kits with the two bolts tensioners and not a four bolt tensioner they can be dangerous because they are not as tough and they can get sucked into your spokes, four bolt tensioners are the way to go for sure. It's really unfortunate when people who do not know what they are talking about answer question for the community because it makes everyone that much dumber for having to have read that non sense.
Question:	What size of bike can you use
Answer:	26" bike

Zeda 100 Complete 80cc/100cc Bicycle Engine Kit - Firestorm Edition 44 Tooth

Zeda

Based on 59 reviews Check latest price

Product description

Zeda100 (YD100) Complete 80cc/100cc Firestorm Engine Kits!

Get this new and exclusive model that includes a 50mm bore single piece cylinder, an upgraded CDI, the new performance Speed carb, and more. Delivering more performance & torque than any kit ever sold, this engine will blow all others out of the water and sell out quick. Get your Zeda 100 motor today and leave all your buddies in the dust!

New Features Include:

50mm bore single piece cylinder head; increased weight capacity, lower operating temps, easier starting; sustained power output across varied rpm range; high performance speed carb; silver anti-corrosion coating; high performance CDI with Yamaha components; improved magneto High end allen bolts Improved gas cap

This bike engine kit includes all of the necessary items to turn your pedal bicycle into a motorized monster! Supply is very limited, so get yours while they last.

Included with kit:

Firestorm Zeda100 3+ HP Engine with one piece cylinder head
50mm Bore, 40mm Stroke w/ Actual U.S. engine displacement of 78.6cc
Pearl coating protects against corrosion
High performance Speed carb Angled LD
Z8C spark plug Improved magneto
Stainless steel allen bolts and better-balanced crank
Upgraded bearings w/ 60% thicker crank case
Large intake port (40mm bolt hole width) Round exhaust port 40mm
Crank stroke (more powerful, efficient and reliable)
Type B piston (high wrist pin)
Long rod (89mm) Larger 8mm x 1.25 engine mount studs

Dimensions: 9" x 9" x 5" Mounting Kit & Accessories High performance CDI with Yamaha components, black teardrop gas tank (2L) w/ new fuel cap, fuel valve, fuel filter and line. 415 Heavy duty chain (w/ chain guard ball bearing chain tensioner). New chrome muffler (longer angle for pedal clearance)
- Firestorm Zeda100 3+ HP bicycle engines with high performance heads & CDI Yamaha components
- 50mm Bore/40mm Stroke/US displacement 78.6cc/40mm Intake & Round Exhaust/Type B piston 89mm Long rod
- Increased weight capacity, Low operating temps, Easy starting, Sustained power output across rpms
- Pearl anti-corrosion coat w/ Z8C spark plugs & 60% Thicker crank case for bearings
- Improved magneto/50mm bBore single piece cylinder/High-end Allen bolts & Improved gas cap

User questions & answers

Question:	How fast is its top speed mph
Answer:	35 MPH easy! Not broke in fully or fine tuned yet. Just bolted on and running 16:1 oil for break in and hit 35 with ez ness.
Question:	what kind of modifications to afdapt to a recumbent trike
Answer:	A plate to mount the motor on and probably a place to mount a sprocket
Question:	Does this fit a 24” bike
Answer:	You can get a welder from Harbor Freight for around $100. You can get a metal cutter ofvarious types starting at around 15 going up to 50 for a decent low-end cutter . I made an engine like this fit On a bike that takes 24 inch tires . If it is a girl's version, you can cut The bar and raise it up towards the seat post.
Question:	What bikes will this fit
Answer:	Any basic V frame from 26”-28”. You can fit it to certain 29” bikes with a little fabrication.

Yaheeda 80CC Bicycle Engine Kit,Motorized Upgrade Bike 2-Stroke Conversion Kit,DIY Petrol Gas Engine Bicycle Motor Kit Set for 26",28" Bikes (Silver)

Based on 53 reviews Check latest price

User questions & answers

Question:	Is the crank balanced
Answer:	Yes thank you Correct
Question:	What are the dimensions of the sprocket
Answer:	Hello we currently have 36t 9 hole sprocket
Question:	How much does the gas tank hold
Answer:	The gas tank can hold about 2 L fuel（0.53 US gallon）. By the way, the fuel mixture ratio is 16 gasoline to 1 lubricant. Thanks for your question.
Question:	What is the diameter of the fuel line
Answer:	It doesn’t look like it but it’s 1/4” line

Product features

Starting Procedure:

1.Check that all mounting fixtures, screws, bolts,nuts and fuel pipes are tight.. 2.Open the Fuel Valve and Choke Lever. 3.Press Pre-Filled Plunger two or three times on the carburetor. 4..Keep the throttle low and hold in Clutch Lever,then ride the bike as usual. 5.Release the Clutch Lever gradually.

Parking Procedure:

1.Hold in Clutch Lever. 2.Brake the bicycle. 3.Press the Kill Switch on the Throttle Handle Grip. 4.Close the Fuel Valve and Choke Lever. 5.Park your bike.

Run-in period:

The engine needs to run in.Please limit riding time to one hour at the first few times.

Service：

1.Parts missing or damaged in the package can be reissued for free. 2.Provide technical support for installation and use.

MOTOOS 80CC 24" 26" 28" 2 Stroke Bike Bicycle Motorized Cycle Petrol Gas Engine Motor Kit Set (Silver)

MOTOOS

Based on 463 reviews Check latest price

MOTOOS 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
Fits for most 24" 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")
Key parameters: bore and stroke-47mm & 40mm, Max. power 3 horsepower/5000r/min, Super fuel-efficient, only consuming 2.5L fuel/100km
Lubrication Oil: oil for 2-stroke petrol engine (or oil for 10W/40.10W/30); Mixing Ratio of Fuel and engine Oil: 16:1 for new sets, 20: 1 after running 500km
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

User questions & answers

Question:	Does the gas cap seal
Answer:	It's a vented cap. Don't over fill the tank or leant the bike too far over, and it's ok.
Question:	will this fit a mongoose dolomite bike
Answer:	I would not try to put the motor on the moongose because the rear disc brakes are were the rear sprocket will be. And also the width of the tire looks too wide and might rub with the motor chain you will be installing. I highly recommend a huffy beach cruiser with the back pedal brakes. I just did two. The bike cost me $90 at walmart.
Question:	Will this work for a 29 inch bike
Answer:	Dear Dionne,this item don't fit for 29 inch bike,sorry,it fit for most type 24" 26" and 28" bikes, such as mountain bikes, road bikes,cruisers, choppers.
Question:	Will this work on a womens beach cruiser
Answer:	I'm sorry to say this product will not work on a women's beach cruiser because of the spacing between the bars of the frame for the engine. But if u consider getting a men's beach cruiser then go ahead and buy this engine because THIS ENGINE WILL FIT A MENS BEACHCRUISER!!🙂

Product features

Introduction:

This 80cc petrol gas engine kit is used to upgrade the regular bike to for a motorized bike. After converting your bike, you can enjoying riding at a faster speed, which can reach 38km/h. It almost runs as fast as a motorcycle or scooter, making your outdoor trip more convenient. This engine kit fits most 26" or 28" bikes with V- frame

Specification:

Mode of Engine:Single cylinder, air-cooling, 2-stroke

Bore & Stroke:47mm & 40mm

Rated Power:2.5Kw/5000r/min (3 horsepower/5000r/min)

Max Power:3.5Kw/6000r/min (5-6 horsepower/6000r/min)

Ignition Mode:CDI

Model of Chain: 415

Chain Length: 110 links

Compression Ratio:6:01

Driving Ratio:18:01

Fuel Type:No.90

Specification:

Capacity of Tank:2L

Speed Limitation:38km/hour

Lubrication Oil: oil of 2-stroke petrol engine (Or oil for 10W/40.10W/30)

Mixing Ratio of Fuel and engine Oil:16:1 for new sets, 20: 1 after running 500km

Type of Sparking Plug:Z4C 14MM

Volume of oil Consumption:2.5L/100km

Type of Clutch:Friction Plate / Dry

Cooling Mode:Natural air cooling

Notes:

Fit for most type 24" 26" and 28" bikes, such as mountain bikes, road bikes,cruisers, choppers

Super fuel-efficient, only consuming 2.5 litre fuel per 100km

Package Includes:

1x 80cc 2-stroke engine

1x Carburetor

1x Ignition coil & CDI

1x Throttle handlebar set

1x Throttle cable

1x Clutch cable

1x Kill switch

1x Clutch lever

1x Chain

1x Chain cover

Anbull Full Set 100CC Bicycle Engine Kit, 2 Stroke Motorized Bike Kit, Super Fuel-efficient Bike Engine kit with 2L Oil Tank for 26" 28" Bike

Ankul

Based on 1 reviews Check latest price

100CC bicycle motor kit :Comes with all needed hardware for easy installation.Heavy duty metal engine body for added durability. Max.speed : 48km/h; Max.Load capacity : 180kg Fuel Type : 90#; N.W : 11kg G.W : 12.1kg
Fits for most type 26" and 28" bikes, such as mountain bikes, road bikes,cruisers, choppers. 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").
100cc Bike Engine Kit- 50mm bore single piece cylinder, an upgraded CDI, Performance Speed Carburetor and more, high performance Speed carb, silver anti-corrosion coating, high performance CDI with Yamaha components, improved magneto, high end allen bolts, improved gas cap.
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.
1 Year worry-free Warranty : If you are not satisfied with this product or if you have any question, please feel free to contact us. 1.Go to your amazon account and find the order. 2.Click the seller name and enter the store page. 3.Click "Ask a question".

Product features

SPECIFICS:

Engine type : gasoline engine; Bore＆stoke : 50mmx40mm
Ignition Mode : CDI Ignition; Max.Power : 1.9kw/5500r/min
Compression ratio : 6﹕1; Transmission ratio : 18﹕1
Starting : Kict starting; Lubricating oil : Two-stroke machine oil
Mixing ratio of fuel and engine oil; 16﹕1for new sets,18﹕1after running 500km S
parking plug : Z4C 16MMM
Tank capacity : 2L; Fuel consumption : 5L/100km Cooling : Air-cooling; Shifting way : sprocket
Max.speed : 48km/h; Max.Load capacity : 180kg
Fuel Type : 90#; N.W : 11kg
G.W : 12.1kg; Ctn size : 42x41x17CMS
procket: 44 tooth

MOTOOS 80CC 24" 26" 28" 2 Stroke Bike Bicycle Motorized Cycle Petrol Gas Engine Motor Kit Set (Black)

MOTOOS

Based on 356 reviews Check latest price

MOTOOS 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
Fits for most 24" 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")
Key parameters: bore and stroke-47mm & 40mm, Max. power 3 horsepower/5000r/min, Super fuel-efficient, only consuming 2.5L fuel/100km
Lubrication Oil: oil for 2-stroke petrol engine (or oil for 10W/40.10W/30); Mixing Ratio of Fuel and engine Oil: 16:1 for new sets, 20: 1 after running 500km
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. NOTE: Due to the chemical reaction of electrophoresis, the engine motor of the product will have a certain proportion of color difference. Please mind to buy it carefully

User questions & answers

Question:	Mine came with a broken nut on the gas valve and they won’t respond back about sending me a new one what do I do
Answer:	just go to the hardware store or somewhere like that get you another one
Question:	Would I have to paddle until it starts or what will I have to do to start the engine
Answer:	Yes, you peddle it and get up some speed and then release the clutch to start it. You can keep pedaling as you release the clutch and twist the throttle to give it more gas when it starts.
Question:	DO you guys have an assembly manual on line
Answer:	Yes, we could provide an electronical version of instruction for you.
Question:	Sirve para una bicicleta de contra pedal
Answer:	Este artículo es apto para la mayoría de las bicicletas tipo 24 "26" y 28 ", como bicicletas de montaña, bicicletas de pedal, bicicletas de carretera

Product features

Introduction:

This 80cc petrol gas engine kit is used to upgrade the regular bike to a motorized bike. After converting your bike, you can enjoying riding at a faster speed, which can reach 38km/h.

Fit for most type 24" 26" and 28" bikes, such as mountain bikes, road bikes,cruisers, choppers

Super fuel-efficient, only consuming 2.5 litre fuel per 100km

Specification:

Mode of Engine:Single cylinder, air-cooling, 2-stroke

Bore & Stroke:47mm & 40mm

Rated Power:2.5Kw/5000r/min (3 horsepower/5000r/min)

Max Power:3.5Kw/6000r/min (5-6 horsepower/6000r/min)

Ignition Mode:CDI

Model of Chain: 415

Chain Length: 110 links

Compression Ratio:6:01

Driving Ratio:18:01

NOTE:

This item in production process, due to the chemical reaction of electrophoresis, the color of ENGINE MOTOR may be different from the listing picture,but the ratio range is very small and controllable,if you have any question or dissatisfied with the engine color,please find us directly,we will do our best to help you solve your oder issue ASAP,thanks!

Package Includes:

1x 80cc 2-stroke engine

1x Carburetor

1x Ignition coil & CDI

1x Throttle handlebar set

1x Throttle cable

1x Clutch cable

1x Kill switch

1x Clutch lever

Full Set 80cc Bike Bicycle Motorized 2 Stroke Petrol Gas Motor Engine Kit Set Black For Motorized Bicycle

Based on 34 reviews Check latest price

Product description

Features:

1. New and in a good condition

2. Premium material and sophisticated workmanship ensure the quality of this engine motor kit

3. It comes with U-mount kit, brake lever, 44T rear sprocket, fuel tank, kill switch, carburetor and other important accessories

4. Easy and reliable to use

5. Good for speeding up your bike and improving its general performance

Specifications:

1. Engine Mode: Single Cylinder, Air-cooling, 2-stroke

2. Chain Length: 110 links,55 inches

3. Rated Power: 2.5Kw/5000r/min

4. Max. Power: 3.5Kw/6000r/min

5. Ignition Mode: CDI

6. Compression Ratio: 6:01

7. Driving Ratio: 18:01

8. Fuel Type: No.90

9. Type of Sparking Plug: Z4C 14MM

10. Fuel Consumption: 120-170 MPG

11. Type of Clutch: Friction Plate / Dry

12. Maximun Speed: 25-40MPH

13. Color: Black

14. Lubrication Oil: Motorcycle Synthetic 2 Stroke Oil

15. Mixing Ratio of Fuel and Engine Oil: 16:1 for Break Period(First 300 Miles), 25: 1 after

16. Net Weight: 23.15 lbs / 10.5 kg

17. Suitable for: 24"",26"" or 28"" Bicycle

18. Engine Kit Includes:

Cylinder Top End

Cylinder Bottom End

U-mount Kit

Carburetor

Petcock.Fuel Filter

Throttle Assembly w/ all Cables

Kill Switch

CDI & Ignition Coil.Spark Plug

Chrome Exhaust Muffler

Brake Lever

Chain,Chain Tensio

Package Includes:

1 x 80cc 2-stroke Engine Motor Kit

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
Fits for most 24" 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")
Key parameters: bore and stroke-47mm & 40mm, Max. power 3 horsepower/5000r/min, Super fuel-efficient, only consuming 2.5L fuel/100km
Lubrication Oil: oil for 2-stroke petrol engine (or oil for 10W/40.10W/30); Mixing Ratio of Fuel and engine Oil: 16:1 for new sets, 20: 1 after running 500km
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

User questions & answers

Question:	I live on a hilltop/rural farm. What kind of difference would I see between a 80cc to 100cc on a bicycle
Answer:	I don't know what the difference would be. But the laws of different in every state about the size of the moto With an 80cc sees in California you just need a California driver's license but with 100 CC's You have to have A M1 or M2 license. The power would be a lot different between 100 and a 80 the company was very nice on trying to replace the bad parts. But the motor never worked no matter how hard I tried. This motor was one piece cylinder and head. The it looked like it had been dropped there were broken fins on top The CDI and the magneto were bad. They replaced in form a given me a refund of 15 bucks I bought a new magneto and CDI and still wouldn't work I never disassemble the engine because of that point was ready to send it back I let them know with pictures and showed them the damage on the top of the motor They refunded all my money. Which I thought was great. I cannot recommend this motor In the picture they show a button clutch what they gave me was a lever clutch. Which made me unhappy. Trying to start the bike motor I hit a small bump and the Clutch unlocked without me holding onto the clutch. The engine tried to start But since I wasn't ready for it. It jammed up and stopped suddenly The chain was good quality though sprocket is good quality of bolts were all good quality All round the bike. Carburetor didn't work. I tried it on my new engine and it would not start that engine The accelerator grip was crappie. The thrust cable was too long and needed to be shorten to fit properly But what I can say is the company treated me properly and I thank them for not sticking me with a that motor
Question:	im missing the lock pin in my carbueroter i need it
Answer:	Not for this motor
Question:	Does this motor have alan head bolts
Answer:	Yes
Question:	What kind of a master cain is this
Answer:	410

Anbull 49CC 4 Stroke Gas Petrol Motorized Bike Bicycle Engine Motor Kit for 28” V Frame Bike and 26” ATV

ANKUL

Based on 57 reviews Check latest price

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.

User questions & answers

Question:	Will this kit fit a 29er
Answer:	No 29ers are junk... You need a old school wide V frame bike For a engine this big. If you want to continue using your 29er buy a electric kit
Question:	will this kit fit a 4" fat tire bike frame
Answer:	the frame has to have like 18-19" frame size and depends on the bike
Question:	What is the size of the center stud screw caps that the bearing sit it they are not fitting in my adapter but are so close
Answer:	Brackets gotta be turned upside down to work
Question:	If i can't ship it to my address where dip i ship it to
Answer:	A friend's address

Product features

Specifications:

1. Engine Model: 142F
2. Engine Type: Air-cooled, 4-Stroke, OHV, single cylinder
3. Bore x Stroke: 41.8 x 36 mm (1.65 x 1.42 in)
4. Displacement: 49 cm3 (2.99 cu in)
5. Compression Ratio: 8.0 : 1
6. Net Horse Power Output: 1.6kW (2.1HP) at 7,000 rpm
7. Net Torque: 2.7 Nm (2.0 lbs ft) at 4,500 rpm
8. PTO Shaft Rotation: Counterclockwise (from PTO shaft side)
9. Ignition System: Transistorized magneto ignition
10. Starting System: Recoil Starter
11. Carburetor: Float Type, Lubrication System: Forced Splash
12. Governor System: Centrifugal Mechanical
13. Air Cleaner: Semi-dry Type
14. Oil Capacity: 0.25l (0.26 US qt, 0.22 Imp qt), Fuel Tank Capacity (liter): 0.77l (0.81 US qt)
15. Dimensions: (8.9 x 10.8 x 13.9)" / (22.5 x 27.4 x 35.3) (L x W x H) , Dry Weight: 5.5 kg / 12.1 lbs

It is recommended to find a professional to install or refer to videos on SNS by searching "49CC bike motor install"

Package included:
1x 49cc 4 stroke engine
1x Gas tank,Plastic gasoline fuel line,fuel value
1x Adjustable chain idler, 1x 44 tooth 9 hole sprocket
1x Chain guard, 1x Extra wide crank/sprocket
1x Fiber sprocket mounting rings,9 sprocket bolts,3 metal retaining segments
1x Engine Mounting plate with universal mounting brackets
1x Spark Plug Wrench, 1x Misc.mounting bolts with nuts
1x Heavy duty #415 chain, 1x Twist grip throttle with built-in kill switch
1x Adjustable throttle cable Note:

Lfhelper 49CC 4-Stroke Bicycle Engine Kit Gas Petrol Motorized Bike Motor Kit Model 142F Air-Cooled OHV Single Cylinder

Lfhelper

Based on 3 reviews Check latest price

🚵‍♂️ 49cc 4 stroke pull start petrol conversion kit for adult bicycles, ideal for bikes with 26 inch frames and similar
🚵‍♂️ 4 stroke engines are more stable, more reliable and Quieter than the 2 stroke rivals.
🚵‍♂️ The top speed of between 27 - 32 MPH / or 43 - 51 KPH
🚵‍♂️ The tank holds 2 liters of petrol and everything comes with the kit.
🚵‍♂️ Engine Model 142F

User questions & answers

Question:	do you know what diameter the clutch pack is
Answer:	For Style-1, it's clutch pack diameter is 76mm(2.99inch); For Style-2(improved Belt Transmission), it's clutch pack diameter is 81.6mm(3.21inch). Any question pls feel free to email us. Best regards!

Product features

Package includes

1 x Quality 49cc 4 stroke engine; 1 x Gas tank, Plastic gasoline fuel line, fuel value ; 1 x Adjustable chain idler; 1 x 44 tooth 9 hole sprocket; 1 x Chain guard; 1 x Extra wide crank/sprocket; 1 x Fiber sprocket mounting rings,9 sprocket bolts,3 metal retaining segments; 1 x Engine Mounting plate with universal mounting brackets; 1 x Spark Plug Wrench; 1 x Misc. mounting bolts with nuts; 1 x Heavy duty #415 chain; 1 x Twist grip throttle with built-in kill switch; 1 x Adjustable throttle cable

MOTOOS 50cc 2 Stroke Bicycle Motorized Cycle Gas Engine Motor Set - 26" & 28" (Silver)

MOTOOS

Based on 98 reviews Check latest price

Product description

MOTOOS 50cc petrol gas engine kit is used to upgrade the regular bike to a motorized bike. After converting your bike, you can enjoying riding at a faster speed, which can reach 30km/h. It almost runs as fast as a motorcycle or scooter, making your outdoor trip more convenient. This engine kit fits most 26" or 28" bikes with V-frame.

Tips:

Before install the engine, please lubricate the inner components first and you should pour some lubricating oil into the cylinder bore from the spark plug hole, then drain off the lubricating oil and install the engine. Please 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 andlongevity of the motor will be reduced.

Specifications:

1. Engine Mode: Single Cylinder, Air-cooling, 2-stroke

2. Bore & Stroke: 40mm x 38mm=48 cm3

3. Rated Power: 1.15Kw/5000r/min (1.6 horsepower/5000r/min)

4. Max. Power: 1.6Kw/6000r/min (3 horsepower/6000r/min)

5. Ignition Mode: CDI

6. Compression Ratio: 6:01

7. Driving Ratio: 18:01

8. Fuel Type: No.90

9. Type of Sparking Plug: Z4C 14MM

10. Volume of Oil Consumption: 1.5L/100km

11. Type of Clutch: Friction Plate / Dry

12. Cooling Mode: Natural Air Cooling

13. Speed Limitation: 30km/hour

14. Lubrication Oil: Oil for 2-stroke Petrol Engine (or Oil for 10W/40.10W/30)

15. Mixing Ratio of Fuel and Engine Oil: 16:1 for new sets, 20: 1 after Running 500km

16. Net Weight: 22.05 lbs / 10 kg

17. Suitable for: 26" or 28" Bicycle

Package Includes:

1x Full 50cc 2-Stroke Engine Motor Kit

All the needed mounting brackets, gaskets, and hardware

MOTOOS 2-stroke 50cc engine kit is perfect to upgrade the regular bike to a motorized bike,you can enjoying riding at a faster speed, which can reach 30km/h as fast as a motorcycle or scooter
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")
Key parameters: bore and stroke 40mm x 38mm=48cm3, Max. power 1.6Kw/6000r/min (3 horsepower/6000r/min), Super fuel-efficient, only consuming 1.5L fuel/100km
Lubrication Oil: oil for 2-stroke petrol engine (or oil for 10W/40.10W/30); Mixing Ratio of Fuel and engine Oil: 16:1 for new sets, 20: 1 after running 500km
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

User questions & answers

Question:	What is the top speed since it can run as fast as a motorcycle
Answer:	It could reach 30km/h.
Question:	Gas tank leaks, how do i fix that
Answer:	Push the gas line all the way up until you can't no more and put a gas clamp on it small one that fits it AutoZone or any auto parts store
Question:	I have this bike roadmaster 26" men's granite peak bike , will this kit work on this
Answer:	As long as you came out the motor it'll work
Question:	Does this have multiple gears and/or an adjustable governor
Answer:	No it doesn't, Single gear. As for governor not sure. But I can tell you it runs vary smooth and quite just make sure to run 91octain or better(as required).