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| SKU | FMF045558 |
| MPN | 045558 |
| GTIN | 045558 |
| Certifications | None |
| Material | Stainless Steel with Carbon Cap |
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2015 | KTM | 250 SX-F | Base |
| 2009-2015 | KTM | 250 XC-F | Base |
| 2007-2016 | KTM | 250 XCF-W | Base |
| 2011-2015 | KTM | 350 SX-F | Base |
| 2011-2015 | KTM | 350 XC-F | Base |
| 2012-2016 | KTM | 350 XCF-W | Base |
| 2009-2010 | KTM | 400 XC-W | Base |
| 2009-2011 | KTM | 450 EXC | Base |
| 2007-2015 | KTM | 450 SX-F | Base |
| 2012-2014 | KTM | 450 SX-F Factory Edition | Base |
| 2009,2013-2015 | KTM | 450 XC-F | Base |
| 2009-2010,2012-2016 | KTM | 450 XC-W | Base |
| 2013-2016 | KTM | 500 XC-W | Base |
| 2008 | KTM | 505 SX-F | Base |
| 2008-2009 | KTM | 505 XC-F | Base |
| 2008 | KTM | 530 EXC-R | Base |
| 2009-2010 | KTM | 530 XC-W | Base |
Discover the FMF 4-Stroke Factory 4.1 RCT Muffler, designed for high-performance applications on KTM models including SXF 07-15, XCF 07-15, XCFW 08-16, and SMR 07-10 motorcycles. This muffler combines lightweight construction with exceptional durability, featuring a stainless steel body and a distinctive carbon fiber end cap that not only boosts aesthetics but enhances heat resistance.
Engineered to optimize exhaust flow and maximize power output, the Factory 4.1 RCT delivers an aggressive sound and improved throttle response. Its innovative design incorporates a removable baffle system, allowing riders to tailor sound levels for street or track use. Installation is straightforward, fitting directly onto compatible FMF exhaust systems without modifications.
Perfect for enthusiasts seeking to elevate their bike's performance with reliable and race-proven components, this muffler reflects FMF Racing's commitment to quality and innovation. Backed by Tuningsupply's fast shipping across Europe and no hidden import fees, it's the ideal upgrade for your KTM 4-stroke dirt bike.
Engineered to optimize exhaust flow and maximize power output, the Factory 4.1 RCT delivers an aggressive sound and improved throttle response. Its innovative design incorporates a removable baffle system, allowing riders to tailor sound levels for street or track use. Installation is straightforward, fitting directly onto compatible FMF exhaust systems without modifications.
Perfect for enthusiasts seeking to elevate their bike's performance with reliable and race-proven components, this muffler reflects FMF Racing's commitment to quality and innovation. Backed by Tuningsupply's fast shipping across Europe and no hidden import fees, it's the ideal upgrade for your KTM 4-stroke dirt bike.
Customer reviews
Based on 160 reviews
Netherlands owned and operated
We want to deliver parts fast, efficiently, and with ease. Our mission is to continue to provide just that. To provide large inventory and efficient logistics while maintaining great service. As well as a community with like-minded auto enthusiasts that share the same passion as we do.

















