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 - 025248 - Powercore 2.1 Muffler - Titanium
FMF
$449.99Fmf - 18211910 - Powercore 2.1 Muffler - TitaniumFeaturesSmooth power curve throughout the RPM rangeLarge diameter canister for more tenability and longer lasting packing lifeDelivers a crisp,...$449.99 -
Fmf - 044458 - Megabomb Header with Midpipe - Stainless Steel
FMF
$424.99Fmf - 18220504 - Megabomb Header with Midpipe - Stainless SteelFeaturesSpecsProduct NameHeaderRiding StyleStreetMaterialStainless...$424.99 -
Fmf - 022060 - Fatty Pipe
FMF
$299.99Fmf - 18201537 - 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 - 025168 - Gnarly Pipe
FMF
$299.99Fmf - 18201531 - 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 - 045561 - Factory 4.1 RCT Muffler - Anodized Titanium
FMF
$649.99Fmf - 18211631 - 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 -
Out of stock
Fmf - 041534 - Powercore 4 Exhaust
FMF
$299.99Fmf - 18201543 - 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 - 022062 - Factory Fatty Pipe - KX85/100
FMF
$299.99Fmf - 18201538 - Factory Fatty Pipe - KX85/100FeaturesBroadens and smooths out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-revNo...$299.99 -
Out of stock
Fmf - 040670 - Spark Arrestor - Powercore 4 Hex
FMF
$29.99Fmf - 18600703 - Spark Arrestor - Powercore 4 HexFeaturesSpecsModelPowerCore 4 HEXTypeSpark ArrestorMaterialSteelUnitsEachProduct NameScreen InsertRiding StyleOff-Road$29.99 -
Fmf - 045558 - Factory 4.1 RCT Muffler - Aluminum
FMF
$549.99Fmf - 18211633 - 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...$549.99 -
Out of stock
Fmf - 014814 - Pipe Spring/O-Rings Kit
FMF
$12.99Fmf - 18600700 - Pipe Spring/O-Rings KitFeaturesSpecsUnitsKitMaterialSteelRiding StyleOff-RoadProduct NameO-RingMaterialRubberTypeExhaustFitment2018, 2024BetaEvo 250 Factory2015-2025Beta300 RR-Race...$12.99 -
Fmf - 042381 - Factory 4.1 Exhaust - Anodized Titanium/Stainless Steel
FMF
$459.99Fmf - 18201967 - Factory 4.1 Exhaust - Anodized Titanium/Stainless SteelFeaturesAvailable with titanium and stainless steel headersFMF's Factory Forward Engineering centralizes mass and is less prone...$459.99 -
Fmf - 045556 - Q4 HEX Muffler
FMF
$449.99Fmf - 18211629 - 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 - 040671 - Quiet Core Spark Arrestor Insert - Q4 Hex
FMF
$39.99Fmf - 18600701 - Quiet Core Spark Arrestor Insert - Q4 HexFeaturesSpecsMaterialSteelRiding StyleOff-RoadUnitsEachModelQ4 HEXTypeSpark ArrestorProduct NameScreen Insert$39.99 -
Fmf - 045553 - PowerCore 4 HEX Muffler
FMF
$399.99Fmf - 18211627 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$399.99 -
Fmf - 045654 - 4.1 RCT Exhaust with MegaBomb - Anodized Titanium
FMF
$1,174.99Fmf - 18201958 - 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 -
Fmf - 043377 - Q4 Muffler
FMF
$449.99Fmf - 18212017 - Q4 MufflerFeaturesEmploys intricate chambers, baffles and proprietary multistage packing materialMax Sound output 96dBConstructed from aircraft grade aluminum and high strength...$449.99 -
Out of stock
Fmf - 044462 - Powercore 4 HEX Muffler
FMF
$399.99Fmf - 18212010 - Powercore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$399.99 -
Fmf - 041592 - Factory 4.1 Muffler
FMF
$299.99Fmf - 18212018 - Factory 4.1 MufflerFeaturesSuperior power and performance - horsepower improved throughout the rpm rangeFeature exclusive proprietary Chamber Core technologyFactory Forward...$299.99 -
Fmf - 044464 - Factory 4.1 RCT Muffler - Aluminum
FMF
$674.99Fmf - 18212012 - 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 - 045666 - Powercore 4 HEX Muffler
FMF
$399.99Fmf - 18212005 - Powercore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$399.99 -
Fmf - 045646 - Q4 HEX Muffler
FMF
$449.99Fmf - 18211999 - 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 - 045645 - Powercore 4 HEX Muffler
FMF
$399.99Fmf - 18211998 - Powercore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$399.99 -
Fmf - 025277 - Turbinecore 2.1 Muffler
FMF
$269.99Fmf - 18211993 - Turbinecore 2.1 MufflerFeaturesLarge diameter canister for longer packing lifeLighter than stockUtilizes exclusive FMF "Turbine Dampening System"SpecsProduct...$269.99 -
Out of stock
Fmf - 041591 - PowerBomb Header - Stainless Steel
FMF
$199.99Fmf - 18220518 - PowerBomb Header - Stainless SteelFeaturesPosition "Bomb" increases performanceHorsepower is increased as much as 10%Act as "pre-muffler" helping to lower the decibel outputThe...$199.99 -
Fmf - 045659 - MegaBomb Header
FMF
$474.99Fmf - 18220515 - 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...$474.99 -
Fmf - 045665 - MegaBomb Header - Stainless Steel
FMF
$374.99Fmf - 18220514 - MegaBomb Header - Stainless SteelFeaturesSpecsMaterialStainless SteelModelMegaBombUnitsEachRiding StyleOff-RoadProduct NameHeaderFitment2021, 2025Beta430 RR 4T2020, 2023-2024Beta430...$374.99 -
Fmf - 025202 - Fatty Pipe
FMF
$299.99Fmf - 18201713 - Fatty PipeFeaturesTru-Flo stamping process ensures a perfect fit and optimum performanceConstructed of strong 19-gauge steel with a nickel-plated finishSpecsMaterialSteelRiding...$299.99 -
Out of stock
Fmf - 025204 - Factory Fatty Pipe
FMF
$299.99Fmf - 18201714 - 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 - 022064 - Factory Fatty Rev Pipe
FMF
$299.99Fmf - 18201715 - Factory Fatty Rev PipeFeaturesIf you're running out of power up top, want more time between shifts and do a lot of deep berm or sand riding, the FMF Rev is your pipe of choiceFMF...$299.99 -
Fmf - 025198 - Factory Fatty Pipe - 65SX/TC65
FMF
$289.99Fmf - 18201693 - Factory Fatty Pipe - 65SX/TC65FeaturesBroadens and smooths out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and increased over-revNo...$289.99 -
Fmf - 025207 - Turbinecore 2 Silencer
FMF
$219.99Fmf - 18211787 - Turbinecore 2 SilencerFeaturesStraight-through design of the spark arrestor canister and the Performance Flow stainless steel end cap ensure strength, durability and unrestricted...$219.99 -
Fmf - 042345 - PowerCore 4 HEX Muffler
FMF
$399.99Fmf - 18211794 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...$399.99 -
Fmf - 025205 - Powercore 2 Silencer
FMF
$199.99Fmf - 18211785 - 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 - 025210 - Turbinecore 2.1 Muffler
FMF
$269.99Fmf - 18211790 - 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 - 025208 - Powercore 2.1 Muffler - Aluminum
FMF
$239.99Fmf - 18211788 - 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 - 025203 - Gnarly Pipe
FMF
$299.99Fmf - 18201711 - 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 - 025197 - Fatty Pipe
FMF
$289.99Fmf - 18201694 - Fatty PipeFeaturesTru-Flo stamping process ensures a perfect fit and optimum performanceConstructed of strong 19-gauge steel with a nickel-plated finishSpecsMaterialSteelRiding...$289.99 -
Fmf - 025201 - Turbinecore 2 Silencer
FMF
$219.99Fmf - 18211763 - Turbinecore 2 SilencerFeaturesStraight-through design of the spark arrestor canister and the Performance Flow stainless steel end cap ensure strength, durability and unrestricted...$219.99 -
Fmf - 042343 - MegaBomb Header - Stainless Steel
FMF
$374.99Fmf - 18220458 - MegaBomb Header - Stainless SteelFeaturesImproved bottom to mid-range powerLess susceptible to damage than a longer headerEffectively reduces sound output by as much as 1.5 dBRuns...$374.99 -
Out of stock
Fmf - 025209 - Powercore 2.1 Muffler - Titanium
FMF
$449.99Fmf - 18211789 - Powercore 2.1 Muffler - TitaniumFeaturesSmooth power curve throughout the RPM rangeLarge diameter canister for more tenability and longer lasting packing lifeDelivers a crisp,...$449.99
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.