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

WÖSSNER forged pistons for YAMAHA YZ 490 from 1982 to 1984

The WÖSSNER forged piston is intended as a component for the engine of the YAMAHA YZ 490 in the entire 1982–1984 model year range. The aluminum design and the forged piston design characterize the technical design of this piston. The specified dimensions and the standard piston compression are decisive for the selection.

Technical features

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Diameter Ø: 88.92 mm
• Bore diameter: 89.00 mm
• Letter oversize: 200
• Oversize: +2.00
• Rings Quantity: 2
• Stroke: 2T

Vehicle assignment

This forged piston is assigned to the YAMAHA YZ 490 built in 1982, 1983 and 1984. The vehicle selection should be based on the model and year of manufacture as well as the listed piston and bore dimensions.

Selection based on measurements

The diameter Ø of 88.92 mm, the bore diameter of 89.00 mm and the marking Oversize +2.00 describe the relevant dimensions of the piston. In addition, the entry “Letter oversize” has the value 200. The version with 2 rings and the indication 2T completes the technical product data.