PISTON KIT-2 BMW R1200GS,S,ST, WOSSNER K8710DA-2, 101mm

This Wossner piston kit set includes two forged pistons with a standard 101.00mm bore and a measured diameter of 100.96mm. Specifically designed for BMW R1200 series models from 2006 to 2009, the Pro Series pistons are engineered for high-performance applications and long rod configurations, offering enhanced compression and thermal efficiency.

Features

• Forged piston construction for superior strength and endurance

• Engineered for optimal combustion chamber heat transfer to cylinder walls

• Elliptical profile ensures a consistent bearing surface under thermal expansion

• Distributes thrust loads evenly to reduce stress and prevent piston collapse

• Manufactured in Germany

• Designed for long rod configuration

Specifications

• Bore: 101.00mm

• Diameter: 100.96mm

• Engine Displacement: 1170 cm³

• Stroke: 73.00 mm

• Clearance: 0.04 mm

• Compression Ratio (Wossner): 12.70:1

• Compression Ratio (OEM): 12.00:1

• Dome Volume: +4.40 cm³

• Compression Height: 27.90 mm

• Kit Includes: 2 pistons, pins, rings, and clips

• Clips P/N: C22X1.6

• Pin P/N: WP009

• Ring Set P/N: 1010XSY

Cross-Reference OEM Part Numbers

• Part No. 56-W9935.000.WO

• Wossner Piston K8710DA-2

Vehicle Fitments

• BMW R1200GS 2006–2009

• BMW R1200S 2006–2009

• BMW R1200ST 2006–2009

• BMW R1200RT 2006–2009

• BMW R1200R 2006–2009