Manufactured by Namura Kit Includes piston, rings, pin, clips you get exactly what is pictured Cast piston has super-high silicone content for additional strength Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life Piston dome is anodized for superior heat resistance and longer lifespan Kit is for standard bore size 66.40mm Size B piston is 66.35mm Made in Taiwan Fits 2003 KTM 250 SX 2003 KTM 250 SXS 2004 KTM 250 SX 2004 KTM 250 SXS 2005 KTM 250 SX 2005 KTM 250 SXS 2006 KTM 250 SX 2006 KTM 250 SXS 2006 KTM 250 XC 2006 KTM 250 XC-W 2007 KTM 250 SX 2007 KTM 250 SXS 2007 KTM 250 XC 2007 KTM 250 XC-W 2008 KTM 250 SX 2008 KTM 250 XC 2008 KTM 250 XC-W 2008 KTM 250 XC-WE 2009 KTM 250 SX 2009 KTM 250 XC 2009 KTM 250 XC-W 2009 KTM 250 XC-WE 2010 KTM 250 SX 2010 KTM 250 XC 2010 KTM 250 XC-W 2011 KTM 250 SX 2011 KTM 250 XC 2011 KTM 250 XC-W 2012 KTM 250 SX 2012 KTM 250 XC 2012 KTM 250 XC-W 2013 KTM 250 SX 2014 KTM 250 SX 2015 KTM 250 SX