50mm Piston Pin Kit For 100cc Motorized Bicycle Bike Engine Accessories This piston pin kit is designed for use with 100cc motorized bicycle engines.It includes a 50mm piston pin that fits standard engine configurations commonly found on bike motor kits.The component is made from materials suitable for small displacement two-stroke and four-stroke engines.It serves as a replacement part for worn or damaged pins, smooth connection between the piston and connecting rod.This kit is intended for use in engine rebuilds or performance.Installation requires basic mechanical tools and knowledge of engine assembly.Compatible with common 100cc engine models used in motorized bicycle conversions. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.