FMF Racing KTM SX-F 07-15/XC-F 07-15/XCF-W 08-16/SMR 07-10/HSKY FE250/350 14-16 Hex Q4 S/A Muffler

A 4-Stroke header system that incorporates FMF's patented Power Bomb module at a precise location in the initial stage of the header system; by positioning the "Bomb" at this key point, the expansion and contraction of exhaust sonics through the system resulting in a flow increase of nearly 10%. The surface of the perforated core lets the sound exit into the absorbing material (steel wool packing) and then allows the air to expand, cool and ramp back up at higher air pressures (RPMs). The Power Bomb is a "pre-muffler" of sorts, which helps to lower the bike's sound output because it provides more sound-absorbing surface area to allow the exhaust gases to become absorbed. Fitment: 2007 KTM 250 SX-F Base 2007 KTM 250 XC-F Base 2007 KTM 450 SMR Base 2007 KTM 450 SX-F Base 2007 KTM 450 XC-F Base 2008 KTM 250 SX-F Base 2008 KTM 250 XC-F Base 2008 KTM 250 XCF-W Base 2008 KTM 450 SMR Base 2008 KTM 450 SX-F Base 2008 KTM 450 XC-F Base 2009 KTM 250 SX-F Base 2009 KTM 250 XC-F Base 2009 KTM 250 XCF-W Base 2009 KTM 450 SMR Base 2009 KTM 450 SX-F Base 2009 KTM 450 XC-F Base 2010 KTM 250 SX-F Base 2010 KTM 250 XC-F Base 2010 KTM 250 XCF-W Base 2010 KTM 450 SX-F Base 2010 KTM 450 XC-F Base 2011 KTM 250 SX-F Base 2011 KTM 250 XC-F Base 2011 KTM 250 XCF-W Base 2011 KTM 350 SX-F Base 2011 KTM 350 XC-F Base 2011 KTM 450 SX-F Base 2011 KTM 450 XC-F Base 2012 KTM 250 SX-F Base 2012 KTM 250 XC-F Base 2012 KTM 250 XCF-W Base 2012 KTM 350 SX-F Base 2012 KTM 350 XC-F Base 2012 KTM 350 XCF-W Base 2012 KTM 450 SX-F Base 2012 KTM 450 XC-F Base 2012 KTM 450 XC-W Base 2013 KTM 250 SX-F Base 2013 KTM 250 XC-F Base 2013 KTM 250 XCF-W Base 2013 KTM 350 SX-F Base 2013 KTM 350 XC-F Base 2013 KTM 350 XCF-W Base 2013 KTM 450 SX-F Base 2013 KTM 450 XC-F Base 2013 KTM 450 XC-W Base 2013 KTM 500 XC-W Base 2014 KTM 250 SX-F Base 2014 KTM 250 XC-F Base 2014 KTM 250 XCF-W Base 2014 KTM 350 SX-F Base 2014 KTM 350 XC-F Base 2014 KTM 350 XCF-W Base 2014 KTM 450 SX-F Base 2014 KTM 450 XC-F Base 2014 KTM 450 XC-W Base 2014 KTM 500 XC-W Base 2015 KTM 250 SX-F Base 2015 KTM 250 XC-F Base 2015 KTM 250 XCF-W Base 2015 KTM 350 SX-F Base 2015 KTM 350 XC-F Base 2015 KTM 350 XCF-W Base 2015 KTM 450 SX-F Base 2015 KTM 450 XC-F Base 2015 KTM 450 XC-W Base 2015 KTM 500 XC-W Base 2016 KTM 250 XCF-W Base 2016 KTM 350 XCF-W Base 2016 KTM 450 XC-W Base 2016 KTM 500 XC-W Base