This Wossner forged piston kit is a +0.02mm oversize replacement specifically designed for Honda CRF450R models from 2015 onward. With a robust forged build and precise engineering, it supports high-performance applications while maintaining OEM compression characteristics.

Features

• Forged construction for high strength and performance under extreme conditions

• Elliptical design ensures a uniform bearing surface under thermal expansion

• Promotes efficient heat transfer from combustion chamber to cylinder walls

• Even distribution of thrust loads minimises the risk of piston collapse

• Manufactured in Germany

Specifications

• Bore Size: 96.02mm

• Actual Piston Size: 95.98mm

• Display Displacement: 449 cm³

• Stroke: 62.10mm

• Piston Clearance: 0.04mm

• Wossner Compression Ratio: OEM

• OEM Compression Ratio: 12.50:1

• Dome Volume: -2.24 cm³

• Compression Height: 20.60mm

• Theoretical Weight: 241.00g

• Circlip Part Number: CW19

• Pin Part Number: WP028

• Ring Set Part Number: 960ADS-2

Cross-Reference OEM Part Numbers

• Part No: 56-W927.C.WO

Vehicle Fitments

• Honda CRF450R (2015– )