Yamaha WR 250 F (CG 30) [2008-2014] - forged pistons

PROX forged pistons for the Yamaha WR 250 F

The PROX forged piston is designed for the Yamaha WR 250 F (CG 30) from the 2008-2014 model year range. The forged aluminum design and the special alloy support low-friction function. This means that the piston is designed for high reliability in engine operation.

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 30), built between 2008 and 2014. The information on diameter, letter oversize and oversize makes it easier to select the appropriate engine version.

Version for the engine area

As a hollow piston with 5 valve pockets, this version combines the specified piston geometry with a forged design. The standard piston compression and the diameter of 76.97 mm form the relevant technical parameters for the assignment. The value “+0.02” indicates the specified oversize, while the letter C indicates the associated oversize information.

The PROX forged piston is therefore suitable for the precise selection of a piston based on the vehicle, year of manufacture and the listed engine data.