Yamaha XT 400 [1980-1981] - WÖSSNER Pro Series forged pistons

WÖSSNER Pro Series forged pistons for Yamaha XT 400

The WÖSSNER Pro Series forged piston is designed for the Yamaha XT 400 built between 1980 and 1981. The aluminum design and the forged piston design characterize the component for use in the upper engine area.

Version and piston data

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Diameter Ø (mm): 88.93
• Oversize: +2.00
• Letter oversize: 200
• Bore diameter (mm): 89.00
• Compression ratio: 10.2:1
• Number of piston rings: 3

Vehicle assignment

The piston fits the Yamaha XT 400 in the full year range 1980-1981. This assignment is used to select the right spare part for this specific motorcycle model and construction period.

Selection guide

The diameter of 88.93 mm, the bore diameter of 89.00 mm, the oversize +2.00 and the marking 200 are particularly relevant for checking before ordering. In addition, the specified compression ratio of 10.2:1 should be compared with the intended engine version.

The standard piston compression and the design with three piston rings support a targeted assignment based on the technical engine data. The forged piston is described as a single component of the WÖSSNER Pro Series.