Seller notes

Wiseco Piston Kit 97mm YAMAHA YZ450F YZ450FX WR450F Lightweight forging for instant throttle response and maximum torque . Computer engineered piston skirt profiles provide minimal cylinder wall friction . Piston kit includes piston, rings, wristpin and circlips. Specs: Oversize: Standard Bore Size: 97mm Compression Ratio: Standard Fits the following models: YAMAHA WR450F 2019-2020 YAMAHA YZ450F 2018-2019 YAMAHA YZ450FX 2019-2020...

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