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FMF
Factory 4.1 RCT Slip-On Muffler - Anodized Titanium with Carbon Fiber End Cap - FE 250/350
Part # 1821-1631
$649.99
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Confirmed fit for 102 motorcycle configurations across KTM, Husqvarna, and Husaberg, model years 2007–2016.
| Years | Make & Model |
|---|---|
| 2013-2016 | KTM 500 XC-W |
| 2009-2015 | KTM 250 SX-F |
| 2007-2015 | KTM 450 SX-F |
| 2008 | KTM 530 EXC-R |
| 2009-2010 | KTM 530 XC-W |
| 2009-2011 | KTM 530 EXC |
| 2009, 2013-2015 | KTM 450 XC-F |
| 2012-2016 | KTM 500 EXC |
| 2008 | KTM 505 SX-F |
| 2009-2010, 2012-2016 | KTM 450 XC-W |
| 2012-2016 | KTM 350 XCF-W |
| 2008 | KTM 450 XCR-W |
| 2009, 2011, 2013-2015 | KTM 250 XC-F |
| 2012-2014 | KTM 500 XCF-W |
| 2008-2009 | KTM 505 XC-F |
| 2008 | KTM 450 EXC-R |
| 2011-2015 | KTM 350 XC-F |
| 2013 | KTM 450 SMR |
| 2009-2016 | KTM 250 XCF-W |
| 2011-2015 | KTM 350 SX-F |
| 2009-2011 | KTM 450 EXC |
| 2009-2010 | KTM 400 XC-W |
| 2008 | KTM 530 XCR-W |
| 2012-2014 | KTM 450 SX-F Factory Edition |
| 2015-2016 | Husqvarna FE450 |
| 2013-2014 | Husaberg FE250 |
| 2013-2014 | Husaberg FE501 |
| 2013-2014 | Husaberg FE350 |
| 2014-2016 | Husqvarna FE350 |
| 2014-2016 | Husqvarna FE250 |
- RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output
- Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the entire range of power
- FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage
- Innovative rear end cap features simple installation of tuning tip inserts or spark arrestor with the removal of four screws
- Compatible with stock header or FMF header
- Meets AMA and FIM sound requirements
- QuietCore 94 dB insert included
- Spark arrestor included in muffler
- Made in the USA
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Overview
The FMF 1821-1631: Factory 4.1 RCT Slip-On Muffler - Anodized Titanium with Carbon Fiber End Cap - FE 250/350. Confirmed fit for 102 motorcycle configurations across KTM, Husqvarna, and Husaberg, model years 2007–2016. Ships from Greasemoto — a veteran-owned motorcycle parts shop in Fort Worth, TX — with free U.S. shipping on orders over $100.
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Fits these motorcycles
- KTM 500 XC-W
- KTM 250 SX-F
- KTM 450 SX-F
- KTM 530 EXC-R
- KTM 530 XC-W
- KTM 530 EXC
- KTM 450 XC-F
- KTM 500 EXC
- KTM 505 SX-F
- KTM 450 XC-W
- KTM 350 XCF-W
- KTM 450 XCR-W
- KTM 250 XC-F
- KTM 500 XCF-W
- KTM 505 XC-F
- KTM 450 EXC-R
- KTM 350 XC-F
- KTM 450 SMR
- KTM 250 XCF-W
- KTM 350 SX-F
- KTM 450 EXC
- KTM 400 XC-W
- KTM 530 XCR-W
- KTM 450 SX-F Factory Edition