This Wossner piston kit features a 79mm bore and is an oversized (+3mm) option for Kawasaki ZX10R Racing (2004–2007), ZX10R (2008–2010), and ZX10R models from 2011 to current. Forged in Germany for high-performance applications, the pistons are engineered for superior strength, optimal heat dissipation, and uniform expansion under thermal load, helping to prevent piston collapse during intense operation.

Features

• Forged construction ensures strength and durability


• Designed for efficient heat transfer from combustion chamber to cylinder walls


• Elliptical design provides even bearing surface under thermal expansion


• Reduces localised pressure and evenly distributes thrust loads


• Manufactured in Germany

Specifications

• Bore: 79.00mm (+3.00mm Oversize)


• Actual bore: 78.94mm


• 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: RIK79.00D3

Cross-Reference OEM Part Numbers

• 56-W9808.300.WO


• K8746D300-4

Vehicle Fitments

• Kawasaki ZX10R Racing (2004–2007)


• Kawasaki ZX10R (2008–2010)


• Kawasaki ZX10R (2011–Current)