Yamaha WR 250 F (CG 22) [2005] - forged pistons

PROX forged pistons for Yamaha WR 250 F (CG 22) from 2005

The PROX forged piston is designed for the Yamaha WR 250 F (CG 22), built in 2005. Its special alloy minimizes friction and thereby supports high reliability in engine operation. The piston is made of aluminum and is forged.

Technical features

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Diameter Ø: 76.97 mm
• Letter oversize: C
• Oversize: +0.02
• Rings Quantity: Set
• Stroke: 4T
• Specificity: hollow piston / 5 valve pockets

Vehicle assignment

The forged piston fits the Yamaha WR 250 F (CG 22), built in 2005. The assignment refers to this vehicle and this entire range of years of manufacture.

Selection guide

The marking C and the dimension of 76.97 mm should be taken into account when selecting this piston. The standard piston compression and the 4T version support a clear assignment within the specified vehicle application. The hollow piston with 5 valve pockets is another specific feature of this PROX version.