50mm bore single piece cylinder/head (increased weight capacity, lower operating temps, easier starting, sustained power output across varied rpm range) Upgraded Tunable High Performance Carburetor. Features: Choke lever on the handlebars, Main jet. (Can be re-jetted), Pilot jet, Copper oil needle, Idle RPM Screw, Idle Air Screw that delivers more fuel with the choke on, instead of restricting air. Great for cold weather starts! 4 bolts attach the engine to your bike frame and this kit comes are 8mm vs the standard 6mm. That means the mounts are twice as strong and twice as secure. Full Set 100CC Bicycle Motorized 2 Stroke Gas Petrol Bike Engine Motor CDI Kits. NEW Bicycle Motorized 100CC 2-Stroke Gas Petrol Bike Engine Motor Kit Full Set. 50mm bore single piece cylinder/head (increased weight capacity, lower operating temps, easier starting, sustained power output across varied rpm range). Upgraded Tunable High Performance Carburetor. 44 Tooth Sprocket, Red Speed Carburetor, and Upgraded CDI. Ignition Mode:CDI Ignition. Lubricating oil:Two-stroke machine oil. Sparking plug:Z4C 16MMM. Engine type:Gasoline engine. · 100% brand new and high quality, Durable. · Perfect for upgrading from a regular bike to an electric bike, you can enjoy a faster ride. · The 100CC bike engine kit includes all the parts and accessories needed to convert a regular bike into a gasoline-powered motorcycle. · Low fuel consumption, 150 miles per gallon, very energy efficient and economical. · Comes with all needed accessories for easy installation. · Suitable for most 26″ /28″bikes. Engine requires 8oz 2 Stroke oil per gallon of gas during Break In Period. 1 x CDI Assembly. 1 x Fuel Tank (with Valve). 1 x Carburetor Assembly. 1 x Exhaust Muffler. 1 x Clutch handle. 1 x Left Handle Grip. 1 x Twist-grip Throttle with Kill Switch. 1 x Clutch Cable. 1 x Throttle Cable. 1 x Chain Idler Pulley. 1 x Chain Guard. 1 x Set of Other Mounting Accessories. Note: Two-stroke gasoline is a bit noisier and also requires a touch of solid oil between the gears. Feedback is very important to us. It is impossible to address issues if we do not know about them! Faction is our ultimate goal. We work hard to earn your trust and future business. A If you receive a defective item, you may return it or ask for a discount. Due to time zones, our reply to your questions may not be immediately. If it’s non-workdays, please kindly be patient and wait till Monday.