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

PROX forged piston for Yamaha WR 450 F (CJ 13)

The PROX forged piston is designed for the Yamaha WR 450 F (CJ 13) built between 2008 and 2011. The forged version is made of aluminum and is made with a special alloy. This alloy minimizes friction and thereby supports high reliability in engine operation.

Function and execution

The piston has standard piston compression and is designed as a hollow piston with 5 valve pockets. It therefore offers a clearly defined basis for selecting a suitable replacement piston within the specified vehicle assignment.

Technical data

• Brand: PROX
• Piston Type: Forged
• Material: aluminum
• Piston compression: standard
• Diameter Ø (mm): 94.95
• 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 450 F (CJ 13), built between 2008 and 2011. When making the selection, the specified diameter of 94.95 mm, the letter A and the STD version must be taken into account.