Wossner Piston Yamaha YZ250F 19 size:Piston A (Standard) as well as a Viton

as well as a Viton ethanol-safe fuel pump o-ring

Yamaha: 2 and 4 cycle engine quads

Fits any 14mm spark plug hole

Compliant to FMVSS106 and WOF/VIN regulations and used by NZSBK champion Andrew Stroud

perfect fit and cool looks that won’t break the bank

Wossner Piston Yamaha YZ250F 19 size:Piston A (Standard) as well as a VitonWossner is Germany's finest aftermarket forged piston and rod manufacturer and have over 25 years of experience in the high performance racing industry. Top European racers and FIM World Champions rely on Wossner for only the best pistons, rods and customer service. Features In house designed and manufactured; all forgings are produced in Wossner's company owned forging operation 4 stroke pistons are made using a double bridged forging design