Yamaha WR 400 F (CH 02) [1998] - forged pistons

PROX forged pistons for the Yamaha WR 400 F (CH 02) from 1998

The PROX forged piston is designed as a component for the upper engine area of the Yamaha WR 400 F (CH 02), built in 1998. Its forged aluminum design combines the specified piston features with a precise assignment to this vehicle.

Technical features

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Diameter Ø: 91.96 mm
• Letter oversize: B
• Oversize: +0.01
• Rings Quantity: Set
• Stroke: 4T
• Specificity: hollow piston / 5 valve pockets

Vehicle assignment

The forged piston fits the Yamaha WR 400 F (CH 02), only for the year 1998. The combination of piston diameter Ø 91.96 mm, oversize +0.01 and the letter B supports the selection based on the technical engine design.

Execution for selection

The term “hollow piston / 5 valve pockets” describes the specific piston design. Together with the standard piston compression and the 4T design, you receive clearly defined technical features for assignment within the vehicle application mentioned. Before ordering, the listed dimensions and markings should be compared with the requirements of your engine.