KTM 640 LC 4 Rally [1997] - WÖSSNER forged pistons

WÖSSNER forged pistons for the KTM 640 LC 4 Rally

The WÖSSNER forged piston is a piston for the upper engine area of the KTM 640 LC 4 Rally from 1997. The design combines the specified piston shape with precise dimensions and compression values for a targeted selection based on the existing engine data.

Function and execution

This component is designed as a forged aluminum piston for a 4T engine. Marking the oversize makes it easier to assign within the specified measurement variant.

Technical data

• Material: aluminum
• Piston Type: Forged
• Diameter Ø: 100.96 mm
• Letter oversize: C
• Oversize: +0.02
• Bore diameter: 101.02mm
• Compression ratio: 11.7:1
• Piston rings: 3
• Version: 4T

Vehicle assignment

The forged piston is assigned to the KTM 640 LC 4 Rally, built in 1997. The vehicle assignment applies expressly to this model and this entire model year range.

Factual advice on selection

Before making your selection, please compare the diameter Ø 100.96 mm, the bore diameter 101.02 mm, the oversize letter C and the oversize specification +0.02 with the technical requirements of your engine. The compression ratio of 11.7:1 and the version with 3 piston rings are part of the variant described.