The FMF PowerCore 4 HEX Muffler, manufacturer part number 045553 and vendor part number 79-3087, delivers race-inspired exhaust performance for select KTM off-road motorcycles. Designed to improve overall power and torque, this muffler uses FMF Hi-Flo core technology and enhanced sonic evacuation to support increased exhaust flow and responsive engine performance. Its removable spark arrestor helps maintain trail-ready functionality while allowing convenient servicing.
Built for dependable off-road use, the FMF PowerCore 4 HEX features durable stainless steel and aluminum construction with space-age internal packing material designed for extended service life. The muffler can be used with either an FMF header or the stock OEM header, making it a practical performance replacement for riders seeking improved exhaust efficiency without replacing the complete exhaust system.
Fitment includes 2012–2016 KTM 350 XCF-W and 2012–2016 KTM 500 XCF-W models. Verify the motorcycle model and year before installation to ensure proper compatibility. The FMF PowerCore 4 HEX Muffler is engineered as a model-specific exhaust component and is intended for installation using the appropriate mounting hardware and manufacturer-recommended procedures.
Features:
- Power and Torque: Provides an overall increase in engine power and torque.
- Construction: Uses durable stainless steel and aluminum materials for rugged off-road performance.
- Internal Packing: Features space-age packing material designed for maximum longevity.
- Hi-Flo Technology: Internal core shape supports improved exhaust flow.
- Sonic Evacuation: Enhanced exhaust evacuation helps increase flow and power.
- Spark Arrestor: Includes a removable spark arrestor for trail-oriented use.
- Header Compatibility: Works with an FMF header or the stock OEM header.
- Fitment: Fits 2012–2016 KTM 350 XCF-W and 2012–2016 KTM 500 XCF-W motorcycles.
- Identification: FMF manufacturer part number 045553 and vendor part number 79-3087.
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