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

WÖSSNER forged pistons for YAMAHA YZ 490

The WÖSSNER forged piston is intended for the YAMAHA YZ 490 from the entire 1982 to 1984 model year range. With its design for a 2T engine and the specified dimensions, it is suitable for the targeted selection of a suitable piston in the upper engine area.

Design and technical data

• Piston Type: Forged
• Material: aluminum
• Diameter Ø: 87.42 mm
• Letter oversize: 050
• Oversize: +0.05
• Bore diameter: 87.50 mm
• Rings: 2
• Engine type: 2T

The dimensions given support coordination with the intended bore diameter. In particular, the piston diameter of 87.42 mm, the bore diameter of 87.50 mm as well as the marking “050” and the oversize information “+0.05” are decisive for the selection of parts.

Vehicle assignment

The piston is assigned to the YAMAHA YZ 490, built between 1982 and 1984. This product description refers to this model and this complete year range.

Selection note

Before ordering, the specified diameters, oversize marking and bore diameter should be compared with the requirements of the motor. The selection can be made based on the relevant technical data of the WÖSSNER forged piston.