NOTE: This complete Vertex Gasket Set contains all components pictured. Produced in the U.S.A. with the latest materials and technology in gasket production to Vertex specifications. Vertex gaskets ensure long-lasting performance and leak prevention for your rebuild needs. Vertex's replacement gaskets and seals are available as top-end kits, complete engine kits, or as an oil seal kit. One kit containing all of the gaskets, O-rings, and valve seals necessary to rebuild the entire engine and transmission Note:Does NOT include transmission seals Fits: Yamaha WR450F 2016-2021 WR450FSP 2021 YZ450F 2014-2015 2017 YZ450FX 2016-2018