YAMAHA WR 450 F [2016-2017] - forged pistons

PROX forged pistons for Yamaha WR 450 F

The PROX forged piston is designed for replacement on the YAMAHA WR 450 F from the 2016-2017 model year range. Its aluminum production and forged design combine the design features of a resilient piston with equivalent original equipment manufacturer quality.

Function and execution

The patented surface treatment helps reduce friction in the cylinder. The flat crown with raised top part and 4 valve pockets is tailored to the specified piston design. The default compression is 12.5:1.

Technical data

• Brand: PROX
• Component: forged piston
• Material: aluminum
• Piston Type: Forged
• Diameter: Ø96.96mm
• Letter oversize: B
• Oversize: +0.01
• Piston compression: standard
• Standard compression: 12.5:1
• Piston rings: set
• Design: 4T
• Specificity: Flat crown with raised top / 4 valve pockets

Vehicle assignment

Suitable for the YAMAHA WR 450 F, built between 2016 and 2017. The assignment refers to this model and this complete year range.

Selection guide

The diameter Ø96.96 mm, the letter B and the oversize +0.01 must be taken into account when selecting. The standard compression of 12.5:1 and the design for 4T clearly assign the piston to its intended application area.