That means the mounts are twice as strong and twice as secure. USED 100CC Bicycle Motorized 2-Stroke Gas Petrol Bike Gasoline Engine Motor Kit. This is a second-hand product: damaged product, missing cylinder bolts; engine won't turn. It can only be used after maintenance. 100CC 2-Stroke 44 Tooth Bicycle Motorized Gas Petrol Bike Engine Full Set CDI.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. Lubricating oil:Two-stroke machine oil. · 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 Fuel Tank (with Valve). 1 x Left Handle Grip. 1 x Twist-grip Throttle with Kill Switch. 1 x Chain Idler Pulley. 1 x Set of Other Mounting Accessories. 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. Reliable quality, economical and compact structure. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Complete Engines". The seller is "interview888" and is located in this country: US. This item can be shipped to United States.