Wossner 100.00mm high-compression big bore forged piston kit is designed for enhanced engine performance. Engineered for optimal heat transfer, it ensures efficient cooling of the combustion chamber. The elliptical design provides a uniform bearing surface, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany for precision and reliability.

Features

• High-compression and big bore design for increased performance


• Forged construction for enhanced strength and longevity


• Optimized heat transfer for efficient cooling


• Elliptical design prevents piston collapse and ensures even load distribution


• Manufactured in Germany for high-quality standards

Specifications

• Bore Size: 100.00mm


• Actual Bore Diameter: 99.96mm


• Displacement: 449 cm³


• Stroke: 62.10mm


• Clearance: 0.04mm


• Wossner Compression Ratio: 12.00:1


• OEM Compression Ratio: 11.50:1


• Dome Volume: -2.20 cm³


• Compression Height: 24.00mm


• Gasket Part Number: D4006


• Lock Part Number: CW19


• Pin Part Number: WP037


• Ring Set Part Number: 1000AD-2


• Rod Part Number: P4026

Cross-Reference OEM Part Numbers

• Part No: 56-W4820_4.00HC


• Wossner Part No: 8546D400

Vehicle Fitments

• Honda CRF450R (2002 - 2003)