WSM Piston Assembly - Yamaha - +.25 mm 010-872-04K Chunk Knit T-Shirt Easily determine true Top Dead

Easily determine true Top Dead Center when setting valves

Graves 7 lbs

Ventilated frame drives out heat and perspiration

The collector joints utilize machined Titanium receivers for a perfect fit every time

WSM Piston Assembly - Yamaha - +.25 mm 010-872-04K Chunk Knit T-Shirt Easily determine true Top DeadQuality 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