Wossner forged piston kit designed for superior strength and performance. Engineered for optimal heat transfer from the combustion chamber to cylinder walls. The elliptical design ensures uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany.

Features

• Forged construction for enhanced durability


• Optimized heat transfer for improved performance


• Elliptical design prevents localized pressure and piston collapse


• Designed for fuel-injected models

Specifications

• Bore: 76.98 mm


• Piston Size: 77.02 mm


• Displacement: 250 cm³


• Stroke: 53.70 mm


• Clearance: 0.04 mm


• Dome Volume: -2.10 cm³


• Compression Height: 19.30 mm

Cross-Reference OEM Part Numbers

• Lock: CW16


• Pin: WP059


• Ring Set: 770XAS

Vehicle Fitments

• TM 250F (Fuel Injected) Enduro (2010-2011)


• TM 250F (Fuel Injected) MX (2010-2011)