FMF
FMF Racing is a globally respected performance brand specializing in high-output motorcycle exhaust systems and race-developed components. With deep roots in motocross, off-road and competitive riding, FMF exhausts are engineered to increase horsepower, sharpen throttle response and deliver a signature aggressive sound. Riders trust FMF for race-proven durability, lightweight construction and consistent real-world performance gains. The FMF name is synonymous with competition, innovation and uncompromising exhaust technology.
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Fmf - 024067 - Turbinecore 2.1 Muffler
FMF
$269.99Fmf - 18211791 - Turbinecore 2.1 MufflerFeaturesThe 2.1 utilizes a shape inspired by the 4.1 systemUtilizes exclusive FMF "Turbine Dampening System"U.S. Forest Service legal...$269.99 -
Fmf - 025199 - Powercore 2 Silencer - Fits 2021-2023 Gas Gas MC 65, 2016-2024 KTM 65 SX, 2017-2023 Husqvarna TC 65
FMF
$199.99Fmf - 18211764 - Powercore 2 SilencerFeaturesThe elliptically shaped bodies with perforated core perform well in any conditionEquipped with a Performance Flow end cap and nickel-plated front...$199.99 -
Fmf - 025221 - Fatty Pipe - Fits 2021-2024 Gas Gas MC 85, 2018-2024 Husqvarna TC 85
FMF
$299.99Fmf - 18201792 - Fatty PipeFeaturesTru-Flo stamping process ensures a perfect fit and optimum performanceConstructed of strong 19-gauge steel with a nickel-plated...$299.99 -
Fmf - 025219 - Factory Fatty Pipe
FMF
$299.99Fmf - 18201791 - Factory Fatty PipeFeaturesBroadens and smooths out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-revNo matter what...$299.99 -
Fmf - 025224 - Factory Fatty Big Bore Exhaust
FMF
$299.99Fmf - 18201794 - Factory Fatty Big Bore ExhaustFeatures19-gauge steel used on the header portion for optimum strength and durability; 20-gauge steel on body and rear section for increased weight...$299.99 -
Out of stock
Fmf - 045620 - MegaBomb Header - Fits 2021-2022 Gas Gas EX/MC 250F, 2019-2022 KTM 250 SX-F/XC-F, 2019-2022 Husqvarna FC 250
FMF
$374.99Fmf - 18220480 - MegaBomb HeaderFeaturesImproved bottom to mid-range powerProduce the low end of a longer header and the top end of a short headerLess susceptible to damage than a long headerRuns...$374.99 -
Fmf - 045628 - Factory 4.1 RCT Muffler - Aluminum - Fits 2021-2023 Gas Gas MC 450F, 2018-2022 KTM 450 SX-F
FMF
$674.99Fmf - 18211920 - Factory 4.1 RCT Muffler - AluminumFeaturesIn addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward...$674.99 -
Fmf - 044445 - Factory 4.1 RCT Muffler - Anodized Titanium
FMF
$849.99Fmf - 18211840 - Factory 4.1 RCT Muffler - Anodized TitaniumFeaturesIn addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory...$849.99 -
Fmf - 044441 - PowerCore 4 HEX Muffler
FMF
$449.99Fmf - 18211836 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$449.99 -
Out of stock
Fmf - 045627 - Q4 HEX Muffler - Multiple Gas Gas/Husqvarna/KTM Models
FMF
$569.99Fmf - 18211919 - Q4 HEX MufflerFeaturesWith the Q4 you don’t need to hear the power, just feel the power!Less sound equals more groundPower gains throughout the entire rpm rangeSpark arrestor...$569.99 -
Fmf - 025249 - Turbinecore 2.1 Muffler - Fits 2021-2022 Gas Gas MC 125, 2019-2022 Husqvarna TC 125
FMF
$269.99Fmf - 18211911 - Turbinecore 2.1 MufflerFeaturesThe 2.1 utilizes a shape inspired by the 4.1 systemUtilizes exclusive FMF "Turbine Dampening System"U.S. Forest Service legal...$269.99 -
Fmf - 042367 - PowerCore 4 HEX Muffler - Fits 2019-2023 Kawasaki KX450F
FMF
$449.99Fmf - 18211886 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$449.99 -
Fmf - 025255 - Powercore 2.1 Shorty Muffler
FMF
$449.99Fmf - 18211916 - Powercore 2.1 Shorty MufflerFeaturesWith their lightweight titanium or extruded aluminum oval canisters mated to a perforated core, these silencers are above the...$449.99 -
Out of stock
Fmf - 044455 - Factory 4.1 RCT Muffler - Anodized Titanium
FMF
$849.99Fmf - 18211885 - Factory 4.1 RCT Muffler - Anodized TitaniumFeaturesIn addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory...$849.99 -
Fmf - 044452 - Q4 HEX Muffler - Fits 2019-2020 Yamaha YZ250F
FMF
$499.99Fmf - 18211882 - Q4 HEX MufflerFeaturesWith the Q4 you don’t need to hear the power, just feel the power!Less sound equals more groundPower gains throughout the entire rpm rangeSpark arrestor...$499.99 -
Fmf - 045625 - MegaBomb Header
FMF
$474.99Fmf - 18220485 - MegaBomb HeaderFeaturesImproved bottom to mid-range powerProduce the low end of a longer header and the top end of a short headerLess susceptible to damage than a long headerRuns...$474.99 -
Out of stock
Fmf - 045622 - MegaBomb Header - Fits 2021-2022 Gas Gas EX 350F, 2019-2022 KTM 350 SX-F/XC-F, 2019-2022 Husqvarna FC/FX 350
FMF
$374.99Fmf - 18220482 - MegaBomb HeaderFeaturesImproved bottom to mid-range powerProduce the low end of a longer header and the top end of a short headerLess susceptible to damage than a long headerRuns...$374.99 -
Fmf - 025152 - Gnarly Pipe - Fits Gas Gas 2012-2014 250, 2012-2014 300
FMF
$299.99Fmf - 18201376 - Gnarly PipeFeaturesWhen looking to add 4-stroke tractor like torque to your 2-stroke and you need a pipe to withstand the harsh elements, this is the pipe for youStrong and rugged,...$299.99 -
Fmf - 025269 - Gnarly Exhaust - Fits 2020-2024 Beta 200 RR
FMF
$329.99Fmf - 18201946 - Gnarly Exhaust - BetaFeaturesWhen looking to add 4-stroke tractor like torque to your 2-stroke and you need a pipe to withstand the harsh elements, this is the pipe for youStrong and...$329.99 -
Out of stock
Fmf - 044404 - PowerCore 4 HEX Muffler
FMF
$449.99Fmf - 18211534 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$449.99 -
Fmf - 025270 - Gnarly Exhaust - Fits 2020 Beta 250/300 RR
FMF
$329.99Fmf - 18201947 - Gnarly Exhaust - BetaFeaturesWhen looking to add 4-stroke tractor like torque to your 2-stroke and you need a pipe to withstand the harsh elements, this is the pipe for youStrong and...$329.99 -
Fmf - 025268 - Factory Fatty Pipe
FMF
$299.99Fmf - 18201945 - Factory Fatty PipeFeaturesBroadens and smooths out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-revNo matter what...$299.99 -
Fmf - 025273 - Turbinecore 2.1 Muffler - Fits Beta 2020-2024 200/250/300 RR, 2021-2025 300 RX
FMF
$269.99Fmf - 18211983 - Turbinecore 2.1 MufflerFeaturesThe 2.1 utilizes a shape inspired by the 4.1 systemUtilizes exclusive FMF "Turbine Dampening System"U.S. Forest Service legal...$269.99 -
Fmf - 025267 - Turbinecore 2.1 Muffler
FMF
$269.99Fmf - 18211980 - Turbinecore 2.1 MufflerFeaturesThe 2.1 utilizes a shape inspired by the 4.1 systemUtilizes exclusive FMF "Turbine Dampening System"U.S. Forest Service legal statusSpecsEnd Cap...$269.99 -
Fmf - 042308 - PowerCore 4 HEX Muffler - Fits 2009-2016 Kawasaki KX250F
FMF
$449.99Fmf - 18211520 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$449.99 -
Out of stock
Fmf - 042309 - PowerCore 4 HEX Muffler - Fits 2009-2011 Kawasaki KX450F
FMF
$449.99Fmf - 18211521 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$449.99 -
Fmf - 025258 - Powercore 2 Silencer - Fits 2021-2023 Gas Gas MC 125, 2019-2022 KTM 125/150 SX, 2020 KTM 150 XC-W, 2019-2022 Husqvarna TC 125, 2020-2022 Husqvarna TE 150
FMF
$199.99Fmf - 18211947 - Powercore 2 SilencerFeaturesThe elliptically shaped bodies with perforated core perform well in any conditionEquipped with a Performance Flow end cap and nickel-plated front...$199.99 -
Fmf - 041587 - Factory 4.1 RCT Muffler - Anodized Titanium
FMF
$749.99Fmf - 18211978 - Factory 4.1 RCT Muffler - Anodized TitaniumFeaturesShorter overall length that is less susceptible to crash damageMassive Power gains throughout the RPM range.Huge weight...$749.99 -
Fmf - 014803 - Exhaust O-Rings - Fits 2005-2014 KTM 300
FMF
$12.99Fmf - 18600607 - Exhaust O-RingsFeaturesSpecsMaterialRubberProduct NameO-RingTypeExhaustUnitsPairRiding StyleOff-RoadFitment2005-2020KTM125 SX-F2005-2020KTM300 XC-W Six Days2008-2015KTM300...$12.99 -
Fmf - 044459 - Megabomb Header with Midpipe - Titanium
FMF
$524.99Fmf - 18220505 - Megabomb Header with Midpipe - TitaniumFeaturesImproved bottom to mid-range powerProduce the low end of a longer header and the top end of a shorter headerEffectively reduces sound...$524.99 -
Fmf - 041580 - Mini PowerCore 4 Slip-On Muffler - with Spark Arrestor
FMF
$239.99Fmf - 18211963 - Mini PowerCore 4 Slip-On Muffler - with Spark ArrestorFeaturesAircraft grade aluminum canisterYou will swear the motor has been bored and stroked with the first twist of the...$239.99 -
Fmf - 042378 - Factory 4.1 RCT Exhaust - Titanium
FMF
$1,199.99Fmf - 18201901 - Factory 4.1 RCT Exhaust - TitaniumFeaturesInternal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the...$1,199.99 -
Fmf - 025265 - Gnarly Exhaust - Sherco
FMF
$329.99Fmf - 18201944 - Gnarly Exhaust - ShercoFeaturesWhen looking to add 4-stroke tractor like torque to your 2-stroke and you need a pipe to withstand the harsh elements, this is the pipe for youStrong...$329.99 -
Fmf - 025272 - Powercore 2.1 Muffler - Aluminum - Fits Beta 2020-2024 200/250/300 RR 2T, 2025 200/300 RR 2T, 2021-2025 300 RX 2T
FMF
$239.99Fmf - 18211982 - Powercore 2.1 Muffler - AluminumFeaturesSmooth power curve throughout the RPM rangeLarge diameter canister for more tenability and longer lasting packing lifeDelivers a crisp,...$239.99 -
Fmf - 025271 - Factory Fatty Pipe - Fits Beta 2020-2024 250/300 RR, 2021-2024 300 RX
FMF
$329.99Fmf - 18211981 - Factory Fatty PipeFeaturesBroadens and smooths out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-revNo matter what...$329.99 -
Fmf - 025262 - Turbinecore 2 Silencer - Fits 2021-2023 Gas Gas EX 300, 2022 Gas Gas EX 250, 2022-2023 Gas Gas MC 250, 2020-2022 Husqvarna TC 250
FMF
$229.99Fmf - 18211951 - Turbinecore 2 SilencerFeaturesStraight-through design of the spark arrestor canister and the Performance Flow stainless steel end cap ensure strength, durability and unrestricted...$229.99 -
Out of stock
Fmf - 041583 - PowerBomb Header - Fits 2019-2022 Honda CRF250F
FMF
$249.99Fmf - 18220499 - PowerBomb HeaderFeaturesPosition "Bomb" increases performance; horsepower is increased as much as 10%Act as "pre-muffler" helping to lower the decibel outputThe expansion and...$249.99 -
Out of stock
Fmf - 042310 - PowerCore 4 HEX Muffler - Fits 2012-2015 Kawasaki KX450F
FMF
$449.99Fmf - 18211522 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$449.99 -
Fmf - 025261 - Powercore 2 Silencer - Fits 2020-2022 Husqvarna TE 250/TX 250/300, 2021-2022 Gas Gas EC 250/EX 300, 2022 Gas Gas EC 300, 2019-2021 KTM 250 SX
FMF
$199.99Fmf - 18211950 - Powercore 2 SilencerFeaturesThe elliptically shaped bodies with perforated core perform well in any conditionEquipped with a Performance Flow end cap and nickel-plated front...$199.99 -
Fmf - 041584 - Powercore 4 Muffler - Fits 2019-2021 Honda CRF250F
FMF
$359.99Fmf - 18211966 - Powercore 4 MufflerFeaturesAluminum construction and stainless steel Hi-Flo end caps make for the perfect balance of performance and strengthRemovable spark arrestor...$359.99
FMF – High-Performance Exhaust Systems and Racing Components
FMF Racing has built its legacy through decades of direct involvement in professional motocross, supercross, desert racing and off-road competition. Every FMF exhaust system is developed using extensive dyno testing, track feedback and real-world race data to extract maximum performance from modern and classic motorcycle engines. This race-first approach allows FMF to deliver exhaust solutions that improve airflow efficiency, engine response and overall power delivery without sacrificing reliability.
FMF motorcycle exhaust pipes, headers and mufflers are engineered to increase torque and horsepower across usable RPM ranges while reducing overall system weight. Tuned silencer designs, precision-welded headers and lightweight materials help riders achieve stronger acceleration, improved throttle control and a more responsive riding experience. FMF also supports long-term performance with exhaust repack kits, replacement components and accessories designed to maintain optimal sound control and efficiency.
Trusted by factory race teams, professional riders and serious enthusiasts worldwide, FMF continues to set the benchmark in motorcycle exhaust performance. Whether upgrading a trail bike, motocross machine or off-road racer, FMF exhaust systems deliver proven power gains, aggressive sound and the durability required for hard riding. For riders who demand performance backed by racing heritage, FMF remains a top-tier exhaust solution.