Piston Kit Harley 3.837 SET/2, Wossner K8595D225-2 Davidson

The Wossner K8595D225-2 piston kit is a forged performance set developed for Harley Davidson Twin Cam engines. With a +2.25mm oversize bore (3.837") and a domed piston configuration, this kit delivers a 10:1 compression ratio ideal for increased power output. Manufactured in Germany, it includes all necessary components for reliable and accurate installation.

Features

• Forged high-performance pistons with skirt coating

• Elliptical design ensures balanced thermal expansion and load distribution

• Optimised heat transfer from combustion chamber to cylinder walls

• Domed pistons with 10:1 compression ratio

• Includes rings, clips, and pins

Specifications

• Bore size: 3.837" (+0.089", +2.25mm)

• Compression ratio: 10:1

• Quantity: 2 pistons per kit

• Made in Germany

Cross-Reference OEM Part Numbers

• Part No. 56-W9866.225.WO

• Ring Set Part No. 975XSY

Vehicle Fitments

• Harley Davidson 1453cc Twin Cam 1999–2009

• Harley Davidson 1514cc Twin Cam 1999–2009

• Twin Cam 88 (88 cu. in.) 1999–2006