Yamaha WR 250 F (CG 26) [2007] - forged pistons

PROX forged pistons for Yamaha WR 250 F (CG 26), built in 2007

The PROX forged piston is designed as a replacement piston for the Yamaha WR 250 F (CG 26) from the entire 2007 model year. The piston is forged from a special aluminum alloy. This design minimizes friction and thereby supports high reliability in engine operation.

Function and execution

The forged piston design combines the defined piston geometry with a standard compression intended for this vehicle. The hollow piston has 5 valve pockets. This means that the design is specifically tailored to the specified engine application and the existing valve arrangement.

Technical data

• Brand: PROX
• Piston Type: Forged
• Material: aluminum
• Piston compression: standard
• Diameter Ø: 76.95 mm
• Letter oversize: A
• Oversize: STD
• Rings Quantity: Set
• Stroke: 4T
• Specificity: hollow piston / 5 valve pockets

Vehicle assignment

The PROX forged piston fits the Yamaha WR 250 F (CG 26), built in 2007. The combination of vehicle assignment, diameter Ø 76.95 mm, oversize letter A and oversize STD supports the targeted selection of the right piston.

Factual note

Before ordering, the technical characteristics of the existing engine, in particular diameter, piston compression and design of the valve pockets, should be compared with the specified data.