ALL SALES FINAL NO RETURN

*Great condition; previously installed. No damage.*

The Factory 4.1 RCT incorporates the latest in FMF Resonance Chamber Technology™ both internally and externally. In addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering – moving the muffler closer to the motor to centralize mass. The Factory 4.1 RCT is constructed from only aerospace grade materials that meet our exacting specifications and is manufactured 100% at our Southern California factory.

-Available in Blue Anodized Titanium Muffler with Carbon End Cap 

-Massive Power gains throughout the RPM range.

-Huge weight savings

-New RTS (Rapid Tuning System)

-FMF uses the highest quality proprietary blend of alloy grade titanium made specifically to our standards.

FEATURES

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Sound levels at idle speed tested at 1′ above and 1′ behind each
muffler on the same 21′ 500 EXCF tested back to back.

Stock muffler 82
Stock w Pro Moto end cap / ultra silent insert 85
Stock w Pro Moto end cap / silent insert 86
Stock w Pro Moto end cap 88

Graves Motorsports w db killer 85
Graves Motorsports 89

Fmf q4 84
Fmf 4.1 88
Fmf power core 88

Lexx w db killer 86
Lexx w spark arrestor insert 87
Lexx 89

Akropovic 85

FITMENT:

045561
2015-2016 Husqvarna FE 450
2014-2016 Husqvarna FE 250
2014-2016 Husqvarna FE 350
2013-2016 KTM 500 XC-W
2013-2014 Husaberg FE 350
2013-2014 Husaberg FE 250
2013-2014 Husaberg FE 501
2013 KTM 450 SMR
2012-2016 KTM 350 XCF-W
2012-2016 KTM 500 EXC
2012-2014 KTM 450 SX-F FE
2012-2014 KTM 500 XCF-W
2011-2015 KTM 350 SX-F
2011-2015 KTM 350 XC-F
2009-2016 KTM 250 XCF-W
2009-2015 KTM 250 SX-F
2009-2011 KTM 530 EXC
2009-2011 KTM 450 EXC
2009-2010, 2012-2016 KTM 450 XC-W
2009-2010 KTM 530 XC-W
2009-2010 KTM 400 XC-W
2009, 2013-2015 KTM 450 XC-F
2009, 2011, 2013-2015 KTM 250 XC-F
2008-2009 KTM 505 XC-F
2008 KTM 450 XCR-W
2008 KTM 530 XCR-W
2008 KTM 530 EXC-R
2008 KTM 450 EXC-R
2008 KTM 505 SX-F
2007-2015 KTM 450 SX-F