Cylinder Kit 65Cc D.45Mm Polini Cast Iron 50Cc Yamaha Chappy

Polini cast iron cylinder 65cc Yamaha Chappy For the lucky owners of a classic Yamaha Chappy 50, Polini brings new life and a solid power boost: the Polini Sport 65ccm cylinder for Yamaha Chappy 50. This high-quality cast iron cylinder comes with a 45mm 2-ring piston. 45mm bore means just under 65cc displacement, delivering noticeably more torque than the stock cylinder. The kit is also super reliable and durable, with no special demands in terms of installation or maintenance. The cylinder works with the original cylinder head. Acceleration and top speed both improve even with a stock setup and no other tuning mods. Output is around 6 hp at 7100 rpm. Polini recommends using a B7HS spark plug and an upgraded small end bearing. You can boost performance further by adding a tuning exhaust and a 19mm carb. Contents Polini cast iron cylinder 65cc Cylinder cast iron, 45mm bore, 63.1cc Gaskets Piston (with pin, rings, clips)