The FMF Q4 Hex Spark Arrestor Muffler is designed to improve exhaust flow while maintaining controlled sound levels for off-road riding. Featuring internal baffles, chambers, and advanced sound-absorbing materials, this muffler helps accelerate exhaust flow with less noise and minimal power loss. Its compact design provides a practical performance upgrade for compatible KTM motorcycles.
Built for durability and trail compliance, the FMF Q4 Hex includes a U.S. Forestry-approved spark arrestor with a maintenance-free stainless steel screen. Sound output remains well under 96 dB on most machines, helping satisfy strict riding-area sound requirements. The muffler is engineered for dependable service in demanding off-road environments.
Fitment includes 2012–2016 KTM 500 XCF-W models, 2012–2015 KTM 350 XCF-W models, and the 2012 KTM 350 XC-F. This product is manufactured by FMF and is identified by manufacturer part number 045556 and vendor part number 79-4192. Confirm the model year and exhaust configuration before installation to ensure proper fitment.
Features:
- Internal baffles, chambers, and sound-absorbing materials help improve exhaust flow while reducing noise and minimizing power loss
- Sound output is well under 96 dB on most machines to help meet strict off-road sound requirements
- U.S. Forestry-approved spark arrestor with a maintenance-free stainless steel screen
- Fits 2012–2016 KTM 500 XCF-W, 2012–2015 KTM 350 XCF-W, and 2012 KTM 350 XC-F motorcycles
- Brand: FMF; Manufacturer part number: 045556; Vendor part number: 79-4192
Fitment:
2005 KTM 250 SX-F
2006 KTM 250 SX-F
2007 KTM 250 SX-F
2007 KTM 250 XC-F
2007 KTM 400 SX 4-Stroke
2007 KTM 450 SMR 4-Stroke
2007 KTM 450 SX-F
2007 KTM 450 XC-F
2007 KTM 505 Sx-F
2007 KTM 525 SX 4-Stroke
2007 KTM 560 SMR 4-Stroke
2008 KTM 250 SX-F
2008 KTM 250 XC-F
2008 KTM 250 XCF-W
2008 KTM 350 XCF-W
2008 KTM 400 SX 4-Stroke
2008 KTM 450 SMR 4-Stroke
2008 KTM 450 SX-F
2008 KTM 450 XC-F
2008 KTM 450 XCF-W
2008 KTM 505 Sx-F
2008 KTM 505 Xc-F
2008 KTM 525 SX 4-Stroke
2008 KTM 530 XC-W 4-Stroke
2008 KTM 560 SMR 4-Stroke
2009 KTM 250 SX-F
2009 KTM 250 XC-F
2009 KTM 250 XCF-W
2009 KTM 350 XCF-W
2009 KTM 400 SX 4-Stroke
2009 KTM 400 XC-W 4-Stroke
2009 KTM 450 SMR 4-Stroke
2009 KTM 450 SX-F
2009 KTM 450 XC-F
2009 KTM 450 XCF-W
2009 KTM 505 Sx-F
2009 KTM 505 Xc-F
2009 KTM 525 SX 4-Stroke
2009 KTM 530 XC-W 4-Stroke
2010 KTM 250 SX-F
2010 KTM 250 XC-F
2010 KTM 250 XCF-W
2010 KTM 350 SX-F
2010 KTM 350 XC-F
2010 KTM 350 XCF-W
2010 KTM 400 SX 4-Stroke
2010 KTM 400 XC-W 4-Stroke
2010 KTM 450 SX-F
2010 KTM 450 XC-F
2010 KTM 450 XCF-W
2010 KTM 505 Sx-F
2010 KTM 505 Xc-F
2010 KTM 525 SX 4-Stroke
2010 KTM 530 XC-W 4-Stroke
2011 KTM 250 SX-F
2011 KTM 250 XC-F
2011 KTM 250 XCF-W
2011 KTM 350 SX-F
2011 KTM 350 XC-F
2011 KTM 350 XCF-W
2011 KTM 400 SX 4-Stroke
2011 KTM 450 SX-F
2011 KTM 450 XC-F
2011 KTM 450 XCF-W
2011 KTM 505 Sx-F
2011 KTM 505 Xc-F
2011 KTM 525 SX 4-Stroke
2011 KTM 530 XC-W 4-Stroke
2012 KTM 250 SX-F
2012 KTM 250 XC-F
2012 KTM 250 XCF-W
2012 KTM 350 SX-F
2012 KTM 350 XC-F
2012 KTM 350 XCF-W
2012 KTM 400 SX 4-Stroke
2012 KTM 450 SX-F
2012 KTM 450 SX-F Factory Edition
2012 KTM 450 XC-F
2012 KTM 450 XCF-W
2012 KTM 500 XCF-W
2012 KTM 505 Sx-F
2012 KTM 525 SX 4-Stroke
2013 KTM 250 SX-F
2013 KTM 250 XC-F
2013 KTM 250 XCF-W
2013 KTM 350 SX-F
2013 KTM 350 XC-F
2013 KTM 350 XCF-W
2013 KTM 450 SX-F
2013 KTM 450 SX-F Factory Edition
2013 KTM 450 XC-F
2013 KTM 450 XCF-W
2013 KTM 500 XCF-W
2013 KTM 505 Sx-F
2014 Husqvarna FE 250
2014 Husqvarna FE 350
2014 KTM 250 SX-F
2014 KTM 250 XC-F
2014 KTM 250 XCF-W
2014 KTM 350 SX-F
2014 KTM 350 XC-F
2014 KTM 350 XCF-W
2014 KTM 450 SX-F
2014 KTM 450 SX-F Factory Edition
2014 KTM 450 XC-F
2014 KTM 450 XCF-W
2014 KTM 500 XCF-W
2015 Husqvarna FE 250
2015 Husqvarna FE 350
2015 KTM 250 SX-F
2015 KTM 250 SX-F Factory Edition
2015 KTM 250 XC-F
2015 KTM 250 XCF-W
2015 KTM 350 SX-F
2015 KTM 350 XC-F
2015 KTM 350 XCF-W
2015 KTM 450 SX-F
2015 KTM 450 SX-F Factory Edition
2015 KTM 450 XC-F
2015 KTM 450 XCF-W
2015 KTM 500 XCF-W
2015 KTM 530 XC-W 4-Stroke
2016 Husqvarna FE 250
2016 Husqvarna FE 350
2016 KTM 250 XCF-W
2016 KTM 350 XCF-W
2016 KTM 450 XCF-W
2016 KTM 500 XCF-W
2016 KTM 530 XC-W 4-Stroke