FITS ALL 2001 AND NEWER YAMAHA YZ250 TWO STROKE MODELS. 72mm ported big bore cylinder.
Big bore power valve assembly match ported to cylinder. Head works with all OEM or after market components. Piston uses pump or race gas.
Works with stock or after market valve springs. Please check your order thoroughly when receiving it.We recommend that this kit be installed by a qualified mechanic with experience working on these types of motors. Piston comes with specific instructions for setting the ring gap. If you do not follow these exactly your motor will fail. The item "YZ250 YZ 250 72mm Big Bore Kit 72 mil Cylinder Powervalve Complete Top End Kit" is in sale since Friday, July 2, 2021. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components". The seller is "bpratv" and is located in Upland, California. This item can be shipped worldwide.