YAMAHA YZ 490 [1982-1984] - WÖSSNER forged pistons

WÖSSNER forged pistons for YAMAHA YZ 490

The WÖSSNER forged piston is designed for the YAMAHA YZ 490 built between 1982 and 1984. It is suitable as a precisely defined component for the 2T engine and offers a suitable selection for repairing the upper engine area.

Technical features

• Piston type: forged
• Material: aluminum
• Piston diameter Ø: 88.42 mm
• Bore diameter: 88.50 mm
• Oversize: +1.50
• Oversize marking: 150
• Number of rings: 2
• Engine version: 2T

Vehicle assignment

The forged piston is assigned to the YAMAHA YZ 490, built between 1982 and 1984. Before ordering, check whether the existing cylinder bore and the selected dimensions match the planned engine overhaul.

Custom selection

The piston diameter of 88.42 mm, the bore diameter of 88.50 mm and the oversize +1.50 are particularly relevant for the assignment. The version with 2 rings and the marking 150 supports a clear selection based on the technical engine dimensions.

The piston is offered as a forged aluminum version for the 2T engine of the YAMAHA YZ 490 mentioned. Dimensions should be compared with the respective cylinder and the intended processing before assembly.