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Dynamic Friction Shield (DFS) external dual density Thermoplastic Polyurethane (TPU) sliders on shoulders for protection against abrasion
We use the same 1
Taped and sealed seams
Has a greater depth than OEM design
Graves Motorsports CNC'ed billet aluminum generator engine cover
WSM Piston Kit - Yamaha - +.50 mm 50-520-05PK X-Seat Air Dynamic Friction Shield (DFS) externalQuality 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
