PROX Forged Piston - 241025 for Yamaha WR450F, YZ450F

PROX forged pistons are manufactured from a special alloy, via a process used by the majority of manufacturers. These pistons offer a very effective balance between performance and reliability.

• Forged piston Ø96.95
• Perfect for direct replacement of original equipment
• Patented surface treatment for the reduction of cylinder internal friction
• Piston rings: 270026
• Standard compression: 12.5:1