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. These sets include the head, base, and exhaust gaskets, valve seals, O-rings and other gaskets to complete a top-end rebuild. Fits: KTM 450 SMR 2005-2007 450 SX 2003-2006 450 XC 2004-2007 520 EXC 2000-2002 520 SX 2000-2002 525 EXC 2003-2006 525 SX 2003-2006