WSM Piston Kit - Yamaha 350 - +1 mm 50-540-07K Stella Bionic Action V2 Protection Jacket -approved spark arrestor TIG precision

-approved spark arrestor TIG precision welding Made in the U

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WSM Piston Kit - Yamaha 350 - +1 mm 50-540-07K Stella Bionic Action V2 Protection Jacket -approved spark arrestor TIG precisionQuality 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