Description
When your Yamaha WR450F or YZ450F demands more from its engine, a quality piston kit is non-negotiable. This PROX kit delivers precision-machined components engineered to exact OEM specifications, restoring lost compression and power while maximizing ring seal integrity. Whether you’re chasing lap times or simply refreshing your top-end, this complete kit includes everything needed for a proper rebuild without the guesswork.
- Bore diameter: 96.95 mm
- Fits: YZ450F, YZ450FX, WR450F
- Piston: CNC-machined
- Ring set: OEM-spec
- Includes wrist pin
- Includes circlips
- Includes instruction sheet
- Installation: Bolt-on rebuild
- MPN: 01.2448.A
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