YAMAHA YZ 490 [1985-1988] - forged pistons

WISECO forged pistons for the YAMAHA YZ 490

The WISECO forged piston is designed as a replacement component for the YAMAHA YZ 490 in the full year range from 1985 to 1988. The technical design is tailored to this vehicle assignment and the specified piston configuration.

Design and technical data

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

The combination of aluminum, forged construction and standard piston compression describes the construction of this piston. The diameter of 89.00 mm and the oversize of +2.00 are central selection features for the allocation to the intended engine variant.

Vehicle assignment

The forged piston is suitable for the YAMAHA YZ 490, built between 1985 and 1988. Before ordering, check whether the vehicle model, year of manufacture and the dimensions mentioned match your existing engine concept. The diameter Ø 89.00 mm, oversize +2.00 and the letter oversize 200 are particularly important for a clear selection.

Selection guide

This design is suitable for applications where a forged aluminum piston with standard piston compression and the specified 2T rating is required. The vehicle allocation remains limited to the YAMAHA YZ 490 built between 1985 and 1988.