PISTON KIT HARLEY 3.797 SET/2, WOSSNER K8594D125-2 DAVIDSON

This Wossner forged piston kit with a 3.797" bore is an oversized (+1.25mm / +0.049") replacement for Harley-Davidson 1453cc Twin Cam engines from 1999 to 2009, including Twin Cam 88 (88 cu. in.) models from 1999 to 2006. Forged in Germany, the pistons feature a flat top design with an 8.5:1 compression ratio and are coated on the skirt for reduced friction and enhanced durability. The kit includes two forged pistons, rings, clips, and pins.

Features

• Forged construction for superior strength and longevity

• Skirt-coated to minimise friction and wear

• Optimised for effective combustion heat transfer to cylinder walls

• Elliptical profile ensures consistent load distribution during thermal expansion

• Flat top piston design with 8.5:1 compression ratio

• Manufactured in Germany

Specifications

• Bore: 3.797" (+1.25mm / +0.049" Oversize)

• Compression ratio: 8.5:1 (flat top)

• Includes: 2 forged pistons, rings, clips, and pins

• Ring Set Part Number: 965XSY

Cross-Reference OEM Part Numbers

• 56-W9865.125.WO

• K8594D125-2

Vehicle Fitments

• Harley-Davidson 1453cc Twin Cam (1999–2009)

• Harley-Davidson Twin Cam 88 (1999–2006)