Yamaha WR 450 F (CJ 13) [2008-2011] - forged pistons

PROX forged pistons for Yamaha WR 450 F

The PROX forged piston is assigned to the Yamaha WR 450 F (CJ 13) in the full year range from 2008 to 2011. The piston is made of aluminum and is manufactured as a forged version. A special alloy reduces friction and thereby supports high reliability in engine operation.

Technical features

• Material: aluminum
• Piston Type: Forged
• Piston compression: standard
• Diameter Ø: 94.96 mm
• Letter oversize: B
• Oversize: +0.01
• Piston rings: set
• Stroke: 4T
• Specificity: hollow piston / 5 valve pockets

Vehicle assignment

The forged piston is assigned to the Yamaha WR 450 F (CJ 13), built between 2008 and 2011. This assignment makes it easier to select the right piston for the specified vehicle and the specified year of manufacture.

Selection note

The diameter of 94.96 mm, the oversize letter B and the oversize +0.01 dimension are particularly relevant for identification. The standard piston compression, the hollow piston design with 5 valve pockets and the included piston ring set complement the technical characteristics of this piston.