Wossner Piston YAM YZ250F 05-07 WR250F 05-13 76.97MM PRO

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
    Lightweight pistons with the tightest piston-wall clearances in the industry give you a quieter running engine
    All pistons include piston, ring, wrist pin and pin locks
    Wossner pistons are used by leading Supercross, Arenacross and MX GP teams
    Made in Germany

Specifications

    Piston Size: 76.97mm
    Oversize: +0.01mm
   Wössner Compression Ratio: 13.50:1
   OEM Compression Ratio: 12.50:1