Wossner forged piston kit designed for superior strength and heat transfer efficiency. Engineered with an elliptical shape to ensure uniform bearing surfaces under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany for high-performance applications.

Features

• Forged construction for enhanced durability and strength


• Optimized heat transfer for improved combustion efficiency


• Elliptical design for even thrust load distribution


• Made in Germany

Specifications

• Bore Size: 94.97mm (+0.01mm oversize = 95.01mm)


• Displacement: 449 cm³


• Stroke: 63.40mm


• Clearance: 0.04mm


• Compression Ratio: OEM (12.50:1)


• Dome Volume: -9.90 cm³


• Compression Height: 23.50mm


• Theoretical Weight: Not specified

Included Components

• Piston Kit (8562DB)


• Piston Clip: CW18


• Piston Pin: WP053


• Piston Ring: 950ADS-2

Vehicle Fitments

• Yamaha YZ450F (2003-2004)


• Yamaha WR450F (2003-2004)