Wossner forged piston kit designed for high-performance big bore applications. Engineered for optimal heat transfer to cylinder walls, ensuring efficient combustion. The elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Manufactured in Germany to high-quality standards.

Features

• Big bore forged piston for increased displacement


• Optimized heat transfer for efficient combustion


• Elliptical design to prevent piston collapse


• Manufactured in Germany

Specifications

• Bore Size: 100.00mm


• Actual Bore Diameter: 99.96mm


• Displacement: 449 cm³


• Stroke: 62.10mm


• Clearance: 0.04mm


• Wossner Compression Ratio: 11.80:1


• OEM Compression Ratio: 11.50:1


• Dome Volume: -6.50 cm³


• Compression Height: 24.00mm


• Theoretical Weight: Not specified

Included Components

• Gasket Part Number: D4006 / D4007


• Lock Part Number: CW19


• Pin Part Number: WP037


• Ring Set Part Number: 1000ADS-2


• Rod Part Number: P4026

Vehicle Fitments

• Honda CRF450R (2002-2008) (Big Bore)