This Wossner piston kit with a 76mm bore is a standard replacement for Kawasaki ZX10R Racing (2004–2007) and ZX10R (2008–2010) models. Precision-forged in Germany, these pistons are designed to enhance structural integrity and heat transfer efficiency. The elliptical design ensures a uniform bearing surface during heat expansion, minimising localised stress and preventing piston collapse.

Features

• Forged construction for maximum strength and durability


• Optimised for efficient heat dissipation from combustion chamber to cylinder walls


• Elliptical profile ensures even bearing contact during thermal expansion


• Reduces localised pressure and evenly distributes thrust loads


• Manufactured in Germany

Specifications

• Bore: 76mm (Standard)


• Actual bore: 75.94mm


• Display volume: 998 / 1051 cm³


• Stroke: 55.00mm


• Clearance: 0.06mm


• Wossner compression ratio: 13.40:1


• OEM compression ratio: 12.70:1


• Dome volume: -1.80 cm³


• Compression height: 22.70mm


• Lock Part Number: CW17


• Pin Part Number: WP038


• Ring Set Part Number: OEM

Cross-Reference OEM Part Numbers

• 56-W9808.76.WO


• K8746DA-4

Vehicle Fitments

• Kawasaki ZX10R Racing (2004–2007)


• Kawasaki ZX10R (2008–2010)