80cc 2-Stroke Bicycle Engine

Our 80cc 2-stroke bicycle engine is the same 2-stroke powerplant that we also sell as part of an all-in-one 80cc kit. Many customers have inquired about purchasing the engine alone and we have listened to you. This 2-stroke engine requires a 16:1 gas-to-oil mix when new. After a suitable "break-in" period of about 300 miles, you can switch over to a leaner 20:1 mixture.

Note: This is a component kit, and the unassembled engine will require some do-it-yourself mechanical ability. No ancillary parts such as fuel tank, muffler, carburetor, chain, sprocket, etc., are included. If you love a little DIY elbow grease then this unassembled 80cc engine is a superb bargain. If you need the whole assembly you may want to take a look at our 80cc 2-Stroke Bicycle Engine Kit.

⚠ WARNING California Residents: Proposition 65 Warning

Engine: 80cc, 2-stroke, one-cylinder, air-cooled, 2-stroke
Bore & stroke: 47 mm & 40 mm
Rated power: 2.5Kw/5000r/min (3 horsepower/5000r/min)
Max power: 3.5Kw/6000r/min (5-6 horsepower/6000r/min)
Compression ratio: 6:01
Driving ratio: 18:01
Speed: 23.6 mph (38kph)
Oil: 10W/40,10W/30
Fuel/oil mix: 16:1 new, 20: 1 after
Cooling: Air cooled