PISTON KIT HARLEY 3.546″ SET/2, WOSSNER K8542D120-2 DAVIDSON, ROAD

This Wossner piston kit is built for Harley Davidson 1340 EVO Big Twin engines (80 cu. in.) with a 4.250″ stroke, covering model years 1984 to 1999. With a 3.546″ bore oversized by +0.044″, it includes domed forged pistons that provide a 9.5:1 compression ratio, optimised for strength and thermal performance.

Features

• Forged high-performance pistons (2 pcs), skirt-coated for friction reduction and longevity

• Designed to maximise heat transfer from the combustion chamber to the cylinder walls

• Elliptical design promotes even pressure distribution, preventing piston collapse under heat expansion

• Domed piston configuration with a 9.5:1 compression ratio

• Manufactured in Germany

• Includes rings, clips, and pins

Specifications

• Bore size: 3.546″ (+0.044″ oversize)

• Compression ratio: 9.5:1

• Stroke: 4.250″

• Piston type: Forged, skirt-coated, domed

• Quantity: 2 pistons per kit

• Wossner Part Number: K8542D120-2

• Alternate Part No: 56-W9957.120.WO

Vehicle Fitments

• Harley Davidson 1340 EVO Big Twin (80 cu. in.), stroke 4.250, years 1984–1999