Wossner forged piston kit designed for durability and optimized heat transfer. Engineered with an elliptical shape for uniform bearing surface distribution, preventing piston collapse. Manufactured in Germany for high performance and reliability.

Features

• Forged construction for superior strength and longevity


• Optimized heat transfer for efficient combustion


• Elliptical design for even thrust load distribution


• Manufactured in Germany

Specifications

• Piston Size: 94.96mm


• Bore: 95mm


• Oversize: Standard


• Clearance: 0.04mm


• Display: 449 cm³


• Stroke: 63.40mm


• Compression Ratio: OEM (12.50:1)


• Dome Volume: -9.90 cm³


• Compression Height: 23.50mm


• Lock Part Number: CW18


• Pin Part Number: WP053


• Ring Set Part Number: 950ADS-2

Cross-Reference OEM Part Numbers

• Wossner 8562DA


• 5TJ-11631-00-00

Vehicle Fitments

• Yamaha YZ450F (2003-2004)


• Yamaha WR450F (2003-2004)