47Pcs 9.48mm Valve Shims Kit for Yamaha YZ250F YZ450F WR250F WR400F WR 426 450 F. YFZ450R 2009–2018. WR450F 2003–2009 / 2011-2018. WR250F 2015–2018. These shims are precisely manufactured with the exact diamter for your machine and total 47 different sizes of shim.
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