Here you will find all the gasket packs that we can have for your motocross YAMAHA WR, YZ,... in 4 strokes. We will propose you as well the packs high engine seal (cylinder) type origin of the same diameter but also the packs seal called big bore which are of a higher displacement. We propose you only quality products like ATHENA, TECNIUM,... We strongly advise you to change your base and cylinder head gaskets every time you reassemble your engine to avoid any air leakage and therefore engine failure.