PISTON KIT-4 GSXR1000 K9-K10, WOSSNER K8790DA-4 SUZUKI

This Wossner piston kit set includes four forged pistons with a standard 74.50mm bore and a measured diameter of 74.46mm, specifically designed for the Suzuki GSXR1000 models from 2009 to 2016. Engineered for high-performance road and race applications, these pistons are built to withstand the demands of extreme engine loads and temperatures.

Features

• Forged construction for maximum strength and durability

• Engineered for optimal combustion chamber heat transfer to cylinder walls

• Elliptical profile provides a consistent bearing surface under heat expansion

• Distributes thrust loads evenly to prevent piston collapse

• Manufactured in Germany

• Must be used with OEM ring set

Specifications

• Bore: 74.50mm

• Diameter: 74.46mm

• Engine Displacement: 999 / 1052 cm³

• Stroke: 57.30 mm

• Clearance: 0.04 mm

• Compression Ratio (Wossner): 14.00:1

• Compression Ratio (OEM): 12.80:1

• Dome Volume: -4.40 cm³

• Compression Height: 22.35 mm

• Kit Includes: 4 pistons

• Clips P/N: CW15

• Pin P/N: WP011

• Ring Set P/N: OEM (must use original equipment rings)

Cross-Reference OEM Part Numbers

• Part No. 56-W9933.000.WO

• Wossner Piston K8790DA-4

Vehicle Fitments

• Suzuki GSXR1000 2009–2016