WSM Piston Kit - Yamaha 660 - Standard 50-544K Two-Piece Stealth Headlight System 49-State emissions compliant

49-State emissions compliant

External finger and palm seams for a close fit and superior feel Printed logos for weight-saving and material integrity

(11/10ths and maximum effort every time from Graves) - Chuck Graves

Includes removable spark arrestor

YKK® waterproof zip with hook and loop front flap for a secure closure

WSM Piston Kit - Yamaha 660 - Standard 50-544K Two-Piece Stealth Headlight System 49-State emissions compliantQuality 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