Cylinder Head Piston Gasket Top End Rebuild Kit For Yamaha Blaster 200 1988-2006 26336293Introduction: A cylinder is where the piston and vales essentially "live". It's a cylindrical chamber that seats the piston. The piston is what is used to create the power of the engine. The valves open and close depending on what cycle the cylinder is on. On the intake stroke, the intake valve opens to allow air and fuel to be drawn into the cylinder. Feature: Condition: Brand New Warranty: 2 Year Specification Fit For: 1988 2006 For Yamaha Blaster