47Pcs 9.48mm Valve Shims Kit for Yamaha YZ250F YZ450F WR250F WR400F WR 426 450 F
WR400F 1998–2000. WR250F 2015–2018. YZ450F 2003–2018. YZ250F 2014–2018. ATV Thumb Throttle & Parts. These shims are precisely manufactured with the exact diamter for your machine and total 47 different sizes of shim.