Features: 1.Fitment: The top end cylinder is a replacement for 80cc 2 Stroke Single Cylinder Engine Motor Motorized Bicycle Bike, please check before ordering. 2.Parameter: The caliber of this engine piston cylinder top end is 47mm, made of high strengh metal alloy material, wear proof and impact resistant. 3.Function: Designed to replace the damaged top end cylinder, provide better sealing performance, more power and allow you to enjoy a better riding experience. 4.Fine Workmanship: Professional manufactured, exquisite workmanship with unique design, ensure stable performance and high reliability. 5.Easy to Install: Stringently manufactured to meet the original standard, good replacement for the old or broken one, improving the time efficiency. Specification: Item Type: Top End Cylinder_x000D_ Material: Metal alloy_x000D_ Fitment:_x000D_ Fits for 80cc 2 Stroke Single Cylinder Engine Motor Motorized Bicycle Bike