Wossner Piston Yamaha YZ250F 05-07 / WR250F 05-13 (Three Ring) size:Piston B (+0.01mm) Sizes (3 Shells): XS-S /

Sizes (3 Shells): XS-S / M-L / XL-2XL

M+S designation

and you're ready to ride

70/100-19 Bias 42M StarCross 5 Soft Tyre NHS TT Front Michelin

Length: 40mm

Wossner Piston Yamaha YZ250F 05-07 / WR250F 05-13 (Three Ring) size:Piston B (+0.01mm) Sizes (3 Shells): XS-S /Wossner 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