Forged piston kit set of four with an 82.00 mm bore (+4.00 mm oversize) and measured piston diameter of 81.94 mm. Engineered for strength, efficient heat transfer and stable operation under thermal load, the elliptical skirt profile promotes a uniform bearing surface and even thrust load distribution. Manufactured in Germany.

Features

• Forged pistons engineered for strength and durability


• Optimised heat transfer from combustion chamber to cylinder walls


• Elliptical design provides a uniform bearing surface under heat expansion


• Distributes thrust loads evenly to help prevent piston collapse


• Made in Germany

Specifications

• Bore size: 82.00 mm


• Measured piston diameter: 81.94 mm


• Oversize: +4.00 mm


• Compression ratio (Wössner): 12.5:1


• OEM compression ratio (reference): 10.0:1


• Compression height: 25.30 mm


• Dome volume: +3.80 cm³


• Recommended clearance: 0.06 mm


• Stroke (engine reference): 58.00 mm


• Displacement (cm³): 1165 / 1194 / 1224 / 1254 / 1315

Cross-Reference OEM Part Numbers

• Wössner K8530D400-4


• Clip: CW20


• Piston pin: WP029


• Ring set: 820XSY

Vehicle Fitments

• Suzuki GSX-R1100 1989–1992


• Suzuki GSF1200 Bandit 1989–1992


• Suzuki GSX1100F Katana 1989–1992