Outlaw Racing Complete Gasket Kits are exactly what you need to get your bike rebuilt and running right! Using materials such as Stainless Steel. Fluoroviton and non-Stick. our gaskets are made to exact OEM specs but with better materials to last longer and keep your bike running stronger. Each kit will contain the exact gaskets. seals and o-rings you need to re-assemble your top and bottom engine components after a standard rebuild . and require no trimming or modification.Compatibility2007-2014. Yamaha WR450F.2006-2009. Yamaha YZ450F