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FMF Q4 HEX Slip-On Exhaust

Item: 357236

$404.99 – $467.99

Select Your Vehicle - Fitment Guaranteed

FMF Q4 HEX Slip-On Exhaust


The FMF Q has always been in a league of its own and the Q4 HEX is the most significant upgrade to date. Don't settle for a plugged-up moto muffler hampered by a power-robbing exhaust insert when you can have a compliant muffler that's engineered for performance. More power, with less noise in a nifty HEX-shaped muffler design. FMF 's Q4 HEX is proof that FMF is the only US manufacturer to offer dedicated quiet exhaust systems.

  • Fits stock or FMF headers
  • Meets USFS and FIM World Enduro sound regulations
  • Less sound means you can travel without worries of getting a ticket from The Man
  • Rugged aluminum sleeve muffler design for off-road endurance
  • Power gains throughout the entire RPM range
  • Includes USFS-approved spark arrestor and 94 dB sound insert
  • Lighter than stock, with added power
  • Made in the USA
Specification Details
Color Varies (make selection above)
Country of Origin USA
Finish Varies (make selection above)
Mid-Pipe Varies (make selection above)
Muffler End Cap Stainless Steel
Muffler Sleeve Aluminum
USFS Approved Spark Arrestor Varies (make selection above)

Vehicle Fitment


Fitment is guaranteed or your money back plus free return shipping.
Don’t waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.

Beta
  • 350 RR Enduro 2010-2018, 2020
  • 350 RR-S 2017
  • 390 RR Enduro 2020
  • 400 RR Enduro 2010-2014
  • 430 RR Enduro 2015-2018, 2020
  • 430 RS Dual Sport 2015-2016
  • 450 RR Enduro 2010-2014
  • 480 RR Enduro 2015-2018, 2020
  • 498 RR Enduro 2012-2014
  • 520 RR Enduro 2010-2011
Gas Gas
  • EC 250F 2021-2022
Honda
  • CRF250L 2017-2020
  • CRF250L Rally 2017-2020
  • CRF250R 4-Stroke 2022-2024
  • CRF450R 2021-2022
  • CRF450X 2005-2009, 2012-2017, 2019-2021
  • TRX450ER Sportrax 450ER 2006-2014
  • TRX450R Sportrax 450R 2004-2014
Husqvarna
  • FC 250 2014-2022
  • FC 350 2014-2022
  • FC 450 2016-2022
  • FE 250 2014-2022
  • FE 350 2014-2022
  • FE 450 2016-2018, 2020
  • FE 501 2017-2023
  • FX 350 2017-2022
  • FX 450 2017-2022
KTM
  • 250 EXC-F 2017-2018
  • 250 SX-F 2007-2022
  • 250 XC-F 2007-2022
  • 250 XCF-W 2008-2016
  • 350 EXC-F 2012-2019
  • 350 SX-F 2011-2022
  • 350 XC-F 2011-2022
  • 350 XCF-W 2012-2016, 2021-2022
  • 450 EXC-F 2017-2018
  • 450 SMR 2007-2009
  • 450 SX-F 2007-2022
  • 450 XC 2007
  • 450 XC-F 2008-2009, 2013-2022
  • 450 XC-W 2009, 2012-2016
  • 500 EXC 2012-2016
  • 500 EXC-F 2017-2019
  • 500 XCF-W 2020-2022
  • 505 SX-F 2008
Kawasaki
  • KLX250S 2009-2015
  • KLX250SF 2009-2010
  • KX250 4-Stroke 2021-2024
  • KX250F 4-Stroke 2009-2016
  • KX250X 4-Stroke 2021-2024
  • KX450 4-Stroke 2019-2024
  • KX450F 2016-2018
Yamaha
  • Raptor 700 2013-2023
  • Raptor 700R 2006-2023
  • WR250F 2015-2024
  • WR450F 2012-2015, 2019-2020
  • YZ250F 4-Stroke 2014-2025
  • YZ250FX 4-Stroke 2015-2024
  • YZ450F 2018-2025
  • YZ450FX 2019-2025

Customer Reviews

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Questions & Answers

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Will the carb need to be rejetted

Stock 2012 klx 250.

Typically, it is not necessary to re jet for just a slip-on.

By Andy
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