Motorized Bicycle Kit 49CC 4-Stroke Gas Petrol Bike Engine Air-Cooled System Single Cylinder Belt Drive Scooter Engine Conversion Kit for Normal 28” V Frame Bike and 26” ATV Bikes










Buy Now, Pay Later
- – 6-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Recently Viewed
Features
- NOTEThis is belt type.
- Enhance Your Bike with the 4 Stroke Bicycle Engine Kit-Upgrade your bike with our high-quality 4 stroke motor engine kit. This kit includes everything you need at an affordable price. Compared to its 2 stroke counterparts, our 4 stroke motor offers more stability, reliability, and a quieter operation.
- Unleash High Speed with Stability-Our powerful motor combined with the 44 tooth 9 hole sprocket enables your bike to reach speeds of 27-32 MPH (or 43-51 KPH). Experience a thrilling ride and enjoy the enhanced performance. The 2-liter petrol tank ensures long-lasting ride enjoyment without frequent refueling.
- Enjoy a Quiet and Smooth Ride-Our 41.8 x 36 mm bore stroke and 49 cm3 displacement engine ensures a smooth and vibration-free ride. With a noise level and vibration kept to a minimum, you can enjoy a peaceful journey without disturbance.]
- Reliable and Easy to Install-Our bicycle motor kit is designed for durability and ease of installation. With all the necessary components included, you can easily attach the engine to your bike and start enjoying the benefits of a gas-powered bike.
- Wide ApplicationThis 49cc 4 stroke pull start petrol conversion kit fits adult bicycles, making it ideal for bikes with 26-inch frames and similar sizes. Transform your regular bike into a powerful gas-powered bike and experience the convenience and excitement it brings.
Description
Specifications:Engine model: 142FEngine type: Air-cooled, 4-Stroke, OHV, single cylinderBore x Stroke: 43.235.5mm ( (1.7 x 1.42 in) )Displacement: 49ccCompression ratio: 8.0 : 1Net horse power output: 1.6KW (2.1HP) at 7,000 rpmNet torque: 2.7 NM (2.0 lbs ft) at 4,500 rpmPTO shaft rotation: Counterclockwise (from PTO shaft side)Ignition system: Transistorized magneto ignitionStarting system: Recoil starterCarburetor float typeLubrication system: Forced splashGovernor system: Centrifugal mechanicalAir cleaner semi- dry typeDimensions (L x W x H): 225x 274x 355mm/8.9 ix10.8x13.97 inchOil Capacity:0.25lFuel Tank Capacity (liter):0.77lColor:silver&black&redMaterial:metal Note:· if your bike has one piece cranks you will need a European Bottom Bracket Adapter for the wide cranks to be installed. 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
Bike Type: Bicycle Conversion Kit
Age Range (Description): Adult
Brand: Haivenliuy
Number of Speeds: 1
Color: Black, Red, Silver
Suspension Type: Rigid
Special Feature: 49cc four-stroke bike engine
Included Components: 1*Bicycle Engine Kit, 1*English Manual , All Accessories for Assembly
Size: Large
Specific Uses For Product: Road
Bike Type: Bicycle Conversion Kit
Age Range (Description): Adult
Brand: Haivenliuy
Number of Speeds: 1
Color: Black, Red, Silver
Suspension Type: Rigid
Special Feature: 49cc four-stroke bike engine
Included Components: 1*Bicycle Engine Kit, 1*English Manual , All Accessories for Assembly
Size: Large
Specific Uses For Product: Road
Item Weight: 30.64 Pounds
Theme: Motorcycle
Style: Belt Type
Model Name: Motorized Bicycle Kit
Power Source: Gasoline
Wheel Material: Aluminum
Assembly Required: Yes
Bicycle Gear Shifter Type: Twist Grip
UPC: 747495481425
Bicycle Drivetrain Type: Chain
Manufacturer: MalcolmUS
Item Package Dimensions L x W x H: 18.5 x 14.96 x 11 inches
Package Weight: 33.51 Pounds
Item Dimensions LxWxH: 11.42 x 9.84 x 9.84 inches
Brand Name: Haivenliuy
Material: Aluminum, Iron
Number of Items: 1
Date First Available: July 31, 2025
Frequently asked questions
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.