Piston Kit Harley 3.898 SET/2, Wossner K8595D375-2 Davidson

The Wossner K8595D375-2 piston kit is a forged, high-performance solution for Harley Davidson Twin Cam engines. Featuring a +3.75mm oversize bore (3.898") and a domed piston design, this kit delivers a 10:1 compression ratio for increased engine output and efficiency. Manufactured in Germany, it comes complete with essential installation components for dependable operation.

Features

• Forged high-performance pistons with skirt coating

• Elliptical design provides consistent thermal expansion and even load distribution

• Optimised combustion chamber heat transfer to cylinder walls

• Domed pistons with 10:1 compression ratio

• Includes rings, clips, and pins

Specifications

• Bore size: 3.898" (+0.148", +3.75mm)

• Compression ratio: 10:1

• Quantity: 2 pistons per kit

• Made in Germany

Cross-Reference OEM Part Numbers

• Part No. 56-W9866.375.WO

• Ring Set Part No. 990XSY

Vehicle Fitments

• Harley Davidson 1453cc Twin Cam 1999–2009

• Harley Davidson 1561cc Twin Cam 1999–2009

• Twin Cam 88 (88 cu. in.) 1999–2006