Cylinder Carburetor Needle Bearing Top End Kit Fit Yamaha Blaster 200 YFS200 99395278Introduction: 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: 1988 2006 For Yamaha Blaster 200