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FMF

FMF Factory 4.1 RCT Exhaust System

Item: P292570

If you are looking to drop weight, improve looks and most importantly improve your bikes power band then look no further. The FMF Factory 4.1 RCT full… Read More

$359.99$1,368.22
$399.99$1,499.99
Save up to $131.77 10%
Price depends on fitment. Select your bike to continue.
Rebate Available! View Details

Product Details

This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

FMF Factory 4.1 RCT Full System

If you are looking to drop weight, improve looks and most importantly improve your bikes power band then look no further. The FMF Factory 4.1 RCT full system is constructed from aerospace-grade materials that meet FMF's exacting specifications and is 100% manufactured in their Southern California factory. The patented MegaBomb header design allows exhaust gases to expand, cool and ramp back up at a higher velocity. This results in torque gains typically associated with longer headers, and the healthy over-rev of a short header. The muffler itself is shorter than OEM mufflers, making it less susceptible to crash damage and complements the centralized mass design by moving it closer to the motor. The rear end cap was engineered for fast and easy tuning by utilizing a retaining ring to keep the standard and optional inserts in place.

Features:

  • Massive power gains throughout the RPM range
  • Huge weight savings over stock exhaust
  • RTS (Rapid Tuning System) for quick and easy track-side tuning
  • Removable spark arrestor included
  • Meets AMA and FIM sound requirements 
  • 100% made in the USA
Made in the USA
This Product Fits
Gas Gas
EX 250F 2021
EX 350F 2021
EX 450F 2021
MC 250F 2021
MC 450F 2021
Honda
CRF150R 2007-2019
CRF250R 2014-2017
CRF250R 2018-2021
CRF250RX 2019-2021
CRF450R 2013-2014
CRF450R 2015-2016
CRF450R 2021
CRF450R 2017-2018
CRF450R 2019-2020
CRF450RX 2017-2018
CRF450RX 2019-2020
Husaberg
FE350 2013-2014
Husqvarna
FC250 2014-2015
FC250 2016-2018
FC250 2019-2021
FC350 2015
FC350 2016-2018
FC350 2019-2021
FC450 2014-2015
FC450 2016-2018
FC450 2019-2021
FC450 Rockstar Edition 2018-2020
FE250 2014-2015
FE350 2014-2015
FX350 2017-2018
FX350 2019-2021
FX450 2017-2018
FX450 2019-2021
KTM
250 SX-F 2011-2012
250 SX-F 2013-2015
250 SX-F 2016-2018
250 SX-F 2019-2021
250 SX-F Factory Edition 2015-2017
250 XC-F 2013-2015
250 XC-F 2016-2018
250 XC-F 2019-2021
250 XCF-W 2014-2016
350 EXC-F 2012-2015
350 SX-F 2011-2012
350 SX-F 2016-2018
350 SX-F 2019-2021
350 XC-F 2011-2012
350 XC-F 2016-2018
350 XC-F 2019-2021
350 XCF-W 2014-2016
350 XCF-W 2012-2013
450 SMR 2013
450 SX-F 2011-2012
450 SX-F 2013-2015
450 SX-F 2016-2018
450 SX-F 2019-2021
450 SX-F Factory Edition 2012-2014
450 SX-F Factory Edition 2015-2017
450 SX-F Factory Edition 2018
450 XC-F 2013-2015
450 XC-F 2016-2018
450 XC-F 2019-2021
450 XC-W 2012-2016
500 EXC 2012-2015
500 XCF-W 2012
500 XC-W 2013-2016
Kawasaki
KX250 2019-2020
KX250 2021
KX250F 2009-2016
KX250F 2017-2018
KX250X 2021
KX450 2019-2021
KX450F 2012-2015
KX450F 2016-2017
Suzuki
RMZ250 2013-2018
RMZ250 2019-2021
RMZ450 2011-2017
RMZ450 2018-2021
Yamaha
TTR125 2000-2015
TTR125L 2000-2008
TTR125LE 2003-2021
WR250F 2015-2019
WR450F 2016-2018
WR450F 2019-2020
YZ250F 2019-2021
YZ250F 2014-2018
YZ250FX 2020-2021
YZ250FX 2015-2019
YZ450F 2020-2021
YZ450F 2014-2017
YZ450F 2018-2019
YZ450FX 2016-2018
YZ450FX 2019
Product Description
Fitment
3 Customer Reviews
35/5
15 Questions & 3 Answers
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