2007-2009 Yamaha YBR250 (1S4) Piston Cylinder Gasket Top End Kit 74mm 1S4-11311-00-A0 1S4-11311-01-A0 Generic yy2307D Boost engine output and efficiency

Boost engine output and efficiency

Compatible for BMW E92 335is 2011-2013

There's two cylinder head gasket type

helping to improve throttle response

Bore size: 65

2007-2009 Yamaha YBR250 (1S4) Piston Cylinder Gasket Top End Kit 74mm 1S4-11311-00-A0 1S4-11311-01-A0 Generic yy2307D Boost engine output and efficiencyProduct Overview This complete top end rebuild kit is an ideal solution if your engine has low compression, cylinder damage, or piston seizure. Includes everything shown: cylinder, piston, rings, pin, clips, and top end gasket kit. Piston is anodized for superior heat resistance and extended service life. Gaskets are made from high performance materials for long lasting sealing reliability. A cost effective replacement for worn or damaged original