Piston Kit Harley 3.856 SET/2, Wossner K8594D275-2 Davidson

The Wossner K8594D275-2 piston kit is a forged high-performance component designed for Harley Davidson Twin Cam engines. Featuring a flat top configuration with an oversized bore of +2.75mm (3.856"), this kit offers optimised thermal transfer and structural integrity under heat stress. Precision-engineered in Germany, it includes all essential parts for installation, ensuring reliable performance and durability.

Features

• Forged high-performance pistons with skirt coating

• Elliptical design for even load distribution and thermal expansion

• Enhanced combustion chamber heat transfer

• Flat top pistons with 8.5:1 compression ratio

• Includes rings, clips, and pins

Specifications

• Bore size: 3.856" (+0.108", +2.75mm)

• Compression ratio: 8.5:1

• Quantity: 2 pistons per kit

• Made in Germany

Cross-Reference OEM Part Numbers

• Part No. 56-W9865.275.WO

• Ring Set Part No. 980XSY

Vehicle Fitments

• Harley Davidson 1453cc Twin Cam 1999–2009

• Harley Davidson 1530cc Twin Cam 1999–2009

• Twin Cam 88 (88 cu. in.) 1999–2006