Piston Kit - Standard - Original Series - Yamaha

Quality and construction that meets or exceeds OEM. Features improved E-clip design. Contains piston, rings, pin and clips. Skirts have a nonabrasive, expansion-retarding MOS2 coating to reduce heat and friction for added power and longevity. MOS2 coating actually draws heat through piston walls and out the bottom. Specially hardened tops add strength to ring grooves. Additional rings available separately. Order one per cylinder..