New WOSSNER Piston For Yamaha YFM400 Big Bear '00-'12 - 83.43mm #WO8903D050

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: 83.43mm
• Oversize: +0.50mm
• Replacement Rings: 835XSY
• Replacement Wrist Pin: WP026
• Replacement Circlip: CW19