Cylinder Works replacement Cylinders! - Cylinder looks just like stock - Nickel silicon carbide plated for longer life - No machine work needed * - Replacement cylinder for standard bore only * Honda CRF250R and CRF250X may require slight case modification. Kit comes with instructions. Fits: KTM 250 EXCF 2006-2011 2013 250 SXF 2005-2006 2008-2012 250 XCF 2011-2012 250 XCFW 2012-2013