Looking to rebuild or upgrade your 66cc/80cc/100cc 2-stroke bicycle engine? This is a performance-oriented cylinder body kit. It features a 47mm bore and is designed as a V80/V100 style cylinder. The kit includes the cylinder body (made of steel/iron), a performance reed valve intake (19mm OD), and a windowed piston (47mm). Important: It does NOT include the piston pin or clips – you'll need a standard 10mm piston pin separately. The cylinder has a carbon fiber insert claimed to boost power. It's meant for enthusiasts who know how to properly install and break in an engine. You'll need to clean the ports, hone the cylinder, and wash it before use. Check your stud spacing (intake and muffler are both 40mm) to ensure compatibility with your engine case. A solid option for a performance rebuild.
