WSM Piston Kit - Yamaha - +1 mm 50-530-07PK 3-Wheel Steering Stem/4-Wheel Lower Steering Stem Bearing Kit Wide range of spring rates

Wide range of spring rates available

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WSM Piston Kit - Yamaha - +1 mm 50-530-07PK 3-Wheel Steering Stem/4-Wheel Lower Steering Stem Bearing Kit Wide range of spring ratesQuality and construction that meets or exceeds OEM Feature improved E clip design Contain piston, rings, pin and clips Additional rings available separately Order one per cylinder 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