PISTON KIT HARLEY 3.521″ SET/2, WOSSNER K8618DO50-2 DAVIDSON, ROAD

This Wossner piston kit is tailored for Harley Davidson 1200 Sportster Big Bore models (88 cu. in) produced between 2004 and 2007. Featuring a 3.521″ oversized bore (+0.020″) and high-compression domed pistons, the kit offers increased performance and durability through advanced forging and thermal management design.

Features

• Forged high-performance pistons (2 pcs), skirt-coated for enhanced wear resistance

• Optimised for efficient heat transfer from combustion chamber to cylinder walls

• Elliptical piston geometry ensures even load distribution during thermal expansion

• Domed piston design with high compression ratio of 10.5:1

• Manufactured in Germany

• Includes rings, clips, and pins

Specifications

• Bore size: 3.521″ (+0.020″ oversize)

• Compression ratio: 10.5:1

• Piston type: Forged, skirt-coated, domed

• Quantity: 2 pistons per kit

• Wossner Part Number: K8619D050-2

• Alternate Part No: 56-W9955.050.WO

Vehicle Fitments

• Harley Davidson 1200 Sportster Big Bore (88 cu. in), years 2004–2007