Athena P400270600021 Top End Gasket Kit Ktm EXC 520 RACING 2000-2007; Ktm EXC 525 RACING 2002-2007; Ktm SMR 450 2005-2013; Ktm SX 450 2003-2006; Ktm SX 450 RACING 2002-2007; Ktm SX 520 RACING 2000-2007; Ktm SX 525 2002-2007; Ktm SXS 540 RACING 2004-; Ktm XC 525 2008-2010;