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 - 010590 - Muffler Packing - 4-Stroke
FMF
$14.99Fmf - FMF12004 - Muffler Packing - 4-StrokeFeaturesSpecsRiding StyleATVUnitsEachRiding StyleUTVProduct NameMuffler PackingRiding StyleOff-RoadMaterialFiberglassColor/FinishWhiteStyle4-Stroke$14.99 -
Fmf - 024034 - Fatty Pipe
FMF
$299.99Fmf - FMF024034 - Fatty PipeFeaturesTru-Flo stamping process ensures a perfect fit and optimum performanceConstructed of strong 19-gauge steel with a nickel-plated finishSpecsProduct NameHead...$299.99 -
Fmf - 025048 - Powercore 2 Shorty Silencer
FMF
$199.99Fmf - FMF025048 - Powercore 2 Shorty SilencerFeaturesOverall length of canister and core is shorter to improve the hit of your machineThe SST Shorty Silencer is the heart and soul of the SST power...$199.99 -
Fmf - 025004 - Gnarly Pipe
FMF
$349.99Fmf - FMF025004 - 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,...$349.99 -
Fmf - 025046 - Powercore 2 Shorty Silencer
FMF
$199.99Fmf - FMF025046 - Powercore 2 Shorty SilencerFeaturesOverall length of canister and core is shorter to improve the hit of your machineThe SST Shorty Silencer is the heart and soul of the SST power...$199.99 -
Fmf - 024037 - Powercore 2 Silencer
FMF
$199.99Fmf - FMF024037 - 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 - 024014 - Powercore 2 Silencer
FMF
$199.99Fmf - FMF024014 - 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 -
Out of stock
Fmf - 024009 - Powercore 2 Silencer
FMF
$199.99Fmf - FMF024009 - 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 - 020404 - Powercore 2 Shorty Silencer
FMF
$199.99Fmf - FMF020404 - Powercore 2 Shorty SilencerFeaturesOverall length of canister and core is shorter to improve the hit of your machineThe SST Shorty Silencer is the heart and soul of the SST power...$199.99 -
Fmf - 024010 - Powercore 2 Shorty Silencer
FMF
$199.99Fmf - FMF024010 - Powercore 2 Shorty SilencerFeaturesOverall length of canister and core is shorter to improve the hit of your machineThe SST Shorty Silencer is the heart and soul of the SST power...$199.99 -
Fmf - 023043 - Factory Fatty Pipe
FMF
$299.99Fmf - FMF023043 - 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...$299.99 -
Fmf - 042371 - Factory 4.1 RCT Muffler - Anodized Titanium
FMF
$749.99Fmf - 18211890 - 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...$749.99 -
Out of stock
Fmf - 045623 - MegaBomb Header
FMF
$474.99Fmf - 18220483 - 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 -
Fmf - 042368 - Q4 HEX Muffler
FMF
$449.99Fmf - 18211887 - 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...$449.99 -
Fmf - 044451 - PowerCore 4 HEX Muffler
FMF
$399.99Fmf - 18211881 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$399.99 -
Out of stock
Fmf - 041533 - Powercore 4 Exhaust
FMF
$279.99Fmf - 18201539 - Powercore 4 ExhaustFeaturesComputer designed and dyno-tested for every 4-stroke applicationEnhanced sonic evacuation delivers a higher flow of exhaust gases, which increases powerA...$279.99 -
Fmf - 041581 - Mini PowerCore 4 Slip-On Muffler - without Spark Arrestor - CRF125F '19+
FMF
$209.99Fmf - 18211964 - Mini PowerCore 4 Slip-On Muffler - without Spark Arrestor - CRF125F '19+FeaturesAircraft grade aluminum canisterYou will swear the motor has been bored and stroked with the first...$209.99 -
Out of stock
Fmf - 040694 - End Cap Replacement Kit - Carbon - RCT External - Blue
FMF
$129.99Fmf - 18602521 - End Cap Replacement Kit - Carbon - RCT External - BlueFeaturesSpecsModelRCTRiding StyleOff-RoadColor/FinishBlueProduct NameEnd CapTypeReplacementUnitsKit$129.99 -
Out of stock
Fmf - 025148 - Gnarly Pipe
FMF
$299.99Fmf - 18201284 - 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 - 044460 - 4.1 RCT Exhaust with MegaBomb - Aluminum
FMF
$1,074.99Fmf - 18201931 - 4.1 RCT Exhaust with MegaBomb - AluminumFeaturesShorter overall length that is less susceptible to crash damage and complementary to FMF's Factory Forward Engineering - moving the...$1,074.99 -
Fmf - 045652 - 4.1 RCT Exhaust with MegaBomb - Anodized Titanium
FMF
$1,174.99Fmf - 18201956 - 4.1 RCT Exhaust with MegaBomb - Anodized TitaniumFeaturesShorter overall length that is less susceptible to crash damage and complementary to FMF's Factory Forward Engineering -...$1,174.99 -
Out of stock
Fmf - 014850 - Exhaust Replacement Decal - 4.1 - Colorways Orange
FMF
$17.99Fmf - 43202455 - Exhaust Replacement Decal - 4.1 - Colorways OrangeFeaturesMade in the USASpecsBase ColorYellowTypeExhaustColor/FinishWhiteColor/FinishYellowColor/FinishBlueProduct NameDecalRiding...$17.99 -
Fmf - 045586 - Factory 4.1 RCT Muffler - Anodized Titanium
FMF
$649.99Fmf - 18211698 - 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...$649.99 -
Fmf - 014824 - Exhaust O-Rings
FMF
$12.99Fmf - 18600933 - Exhaust O-RingsFeaturesSpecsMaterialRubberTypeExhaustProduct NameO-RingUnitsPairRiding StyleOff-RoadFitment2006-2025KTM65 SX2006-2015KTM65 XC2012-2015KTM65 SXS$12.99 -
Fmf - 014823 - Exhaust O-Rings
FMF
$12.99Fmf - 18600932 - Exhaust O-RingsFeaturesSpecsRiding StyleOff-RoadUnitsPairProduct NameO-RingMaterialRubberTypeExhaustFitment2006-2007KTM50 SX Pro Jr LC2006KTM50 SX Pro Sr LC2006-2007KTM50 Sr...$12.99 -
Fmf - 014822 - Exhaust O-Rings
FMF
$12.99Fmf - 18600931 - Exhaust O-RingsFeaturesSpecsRiding StyleOff-RoadProduct NameO-RingUnitsPairMaterialRubberTypeExhaustFitment2018-2026YamahaYZ652006-2010, 2013, 2020-2023, 2025KTM85 SX...$12.99 -
Out of stock
Fmf - 042319 - Powercore 4 Muffler
FMF
$399.99Fmf - 18112614 - Powercore 4 MufflerFeaturesAluminum construction and stainless steel Hi-Flo end caps make for the perfect balance of performance and strengthRemovable spark arrestor includedSpecsEnd...$399.99 -
Fmf - 042318 - Powercore 4 Muffler
FMF
$399.99Fmf - 18112613 - Powercore 4 MufflerFeaturesAluminum construction and stainless steel Hi-Flo end caps make for the perfect balance of performance and strengthRemovable spark arrestor includedSpecsEnd...$399.99 -
Fmf - 042317 - PowerBomb Header
FMF
$249.99Fmf - 18120207 - 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 -
Fmf - 042316 - PowerBomb Header
FMF
$249.99Fmf - 18120206 - 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 -
Fmf - 025133 - Factory Fatty Pipe
FMF
$299.99Fmf - 18201114 - 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 - 024023 - Fatty Pipe
FMF
$289.99Fmf - 18201320 - Fatty PipeFeaturesTru-Flo stamping process ensures a perfect fit and optimum performanceConstructed of strong 19-gauge steel with a nickel-plated finishSpecsProduct NameHead...$289.99 -
Fmf - 025121 - Factory Fatty Pipe
FMF
$299.99Fmf - 18201110 - 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 - 040011 - Powercore 4 Exhaust
FMF
$299.99Fmf - 18201317 - Powercore 4 ExhaustFeaturesComputer designed and dyno-tested for every 4-stroke applicationEnhanced sonic evacuation delivers a higher flow of exhaust gases, which increases powerA...$299.99 -
Fmf - 044272 - Powercore 4 Exhaust
FMF
$279.99Fmf - 18200739 - Powercore 4 ExhaustFeaturesComputer designed and dyno-tested for every 4-stroke applicationEnhanced sonic evacuation delivers a higher flow of exhaust gases, which increases powerA...$279.99 -
Out of stock
Fmf - 025092 - Fatty Pipe
FMF
$299.99Fmf - 18200591 - Fatty PipeFeaturesTru-Flo stamping process ensures a perfect fit and optimum performanceConstructed of strong 19-gauge steel with a nickel-plated...$299.99 -
Fmf - 044136 - Powercore 4 Exhaust
FMF
$279.99Fmf - 18200248 - Powercore 4 ExhaustFeaturesComputer designed and dyno-tested for every 4-stroke applicationEnhanced sonic evacuation delivers a higher flow of exhaust gases, which increases powerA...$279.99 -
Out of stock
Fmf - 021055 - Factory Fatty Pipe - '05-'07 CR250R
FMF
$299.99Fmf - 18200217 - Factory Fatty Pipe - '05-'07 CR250RFeaturesBroadens and smooths out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased...$299.99 -
Out of stock
Fmf - 021052 - Fatty Pipe
FMF
$299.99Fmf - 18200214 - Fatty PipeFeaturesTru-Flo stamping process ensures a perfect fit and optimum performanceConstructed of strong 19-gauge steel with a nickel-plated...$299.99 -
Fmf - 011311 - Pipe Spring/O-Rings Kit
FMF
$12.99Fmf - FMF011311 - Pipe Spring/O-Rings KitFeaturesSpecsMaterialRubberTypeExhaustMaterialSteelRiding StyleOff-RoadUnitsKitProduct NameO-RingFitment2019-2026YamahaYZ851988-2002KawasakiKX125$12.99
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.