PISTON KIT Harley S1 LIGHTNING, WOSSNER K8625DA-2 89.00mm, Harley Davidson S1 White Light

This Wossner piston kit includes two forged pistons with a standard 89.00mm bore and a measured diameter of 88.95mm. Designed for Harley Davidson 1200–1228cc engines, including S1 White Lightning, Thunderbolt, and Buell models, this kit offers a high-strength, high-compression solution for performance applications.

Features

• Forged construction for enhanced durability and strength

• Optimized heat transfer from combustion chamber to cylinder walls

• Elliptical design ensures uniform bearing surface during heat expansion

• Even distribution of thrust loads prevents localised pressure and piston collapse

• Manufactured in Germany

• Supplied as a complete set of 2 pistons, rings, pins, and circlips

Specifications

• Bore: 89.00mm

• Diameter: 88.95mm

• Compression Ratio: 10:1

• Compression Height: 30.7mm

Cross-Reference OEM Part Numbers

• Part No. 56-W9941.000.WO

• Wossner Piston K8625DA-2

Vehicle Fitments

• Harley Davidson S1 White Lightning 1200–1228cc

• Harley Davidson Thunderbolt 1200–1228cc

• Harley Davidson Buell 1200–1228cc