FITS ALL YAMAHA YFZ450 MODELS AND YEARS CARB MODEL ONLY! These valves and springs are NOT what you would need to use big cams that require heavy duty parts. They will work fine with Hotcams or OEM cams.
We recommend that this be installed by a qualified mechanic with experience doing this type of work. 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 this country: US. This item can be shipped worldwide.