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FMF

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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  • Out of stock
    Fmf - 045668 - Factory 4.1 RCT Muffler - Anodized Titanium Fmf - 045668 - Factory 4.1 RCT Muffler - Anodized Titanium

    Fmf - 045668 - Factory 4.1 RCT Muffler - Anodized Titanium

    FMF

    $749.99
    Fmf - 18212007 - 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
    Qty in Cart: 0
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    Price:
    $749.99
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  • Out of stock
    Fmf - 042330 - Factory 4.1 RCT Muffler - Aluminum Fmf - 042330 - Factory 4.1 RCT Muffler - Aluminum

    Fmf - 042330 - Factory 4.1 RCT Muffler - Aluminum

    FMF

    $599.99
    Fmf - 18211726 - 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...
    $599.99
    Qty in Cart: 0
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    $599.99
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  • Fmf - 043376 - Powercore 4 with Spark Arrestor Fmf - 043376 - Powercore 4 with Spark Arrestor

    Fmf - 043376 - Powercore 4 with Spark Arrestor

    FMF

    $399.99
    Fmf - 18212016 - Powercore 4 with Spark ArrestorFeaturesDurable stainless steel and aluminum constructionAdvanced packing material for maximum longevityRemovable spark arrestor...
    $399.99
    Qty in Cart: 0
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    $399.99
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  • Fmf - 042327 - PowerCore 4 HEX Muffler Fmf - 042327 - PowerCore 4 HEX Muffler

    Fmf - 042327 - PowerCore 4 HEX Muffler

    FMF

    $399.99
    Fmf - 18211723 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...
    $399.99
    Qty in Cart: 0
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    $399.99
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  • Fmf - 045647 - Factory 4.1 RCT Muffler - Aluminum Fmf - 045647 - Factory 4.1 RCT Muffler - Aluminum

    Fmf - 045647 - Factory 4.1 RCT Muffler - Aluminum

    FMF

    $549.99
    Fmf - 18212000 - 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
    Qty in Cart: 0
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    $549.99
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  • Fmf - 024062 - Powercore 2.1 Muffler - Aluminum Fmf - 024062 - Powercore 2.1 Muffler - Aluminum

    Fmf - 024062 - Powercore 2.1 Muffler - Aluminum

    FMF

    $239.99
    Fmf - 18211706 - 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
    Qty in Cart: 0
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    $239.99
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  • Out of stock
    Fmf - 025173 - Q Muffler Fmf - 025173 - Q Muffler

    Fmf - 025173 - Q Muffler

    FMF

    $219.99
    Fmf - 18211709 - Q MufflerFeaturesThe U.S. Forest legal spark arrestor will meet the mandated 96dB sound level set by the US Forest ServiceSerious sound deadening qualities and excellent...
    $219.99
    Qty in Cart: 0
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    $219.99
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  • Fmf - 024060 - Powercore 2.1 Muffler - Titanium Fmf - 024060 - Powercore 2.1 Muffler - Titanium

    Fmf - 024060 - Powercore 2.1 Muffler - Titanium

    FMF

    $449.99
    Fmf - 18211704 - 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
    Qty in Cart: 0
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    $449.99
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  • Fmf - 042388 - Q4 Muffler Fmf - 042388 - Q4 Muffler

    Fmf - 042388 - Q4 Muffler

    FMF

    $449.99
    Fmf - 18212028 - Q4 MufflerFeaturesTwin-stage core design for lower sound output and extended life of packing materialComes standard with spark arrestorSpecsProduct NameMufflerRiding...
    $449.99
    Qty in Cart: 0
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    $449.99
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  • Fmf - 041597 - Q4 Muffler Fmf - 041597 - Q4 Muffler

    Fmf - 041597 - Q4 Muffler

    FMF

    $449.99
    Fmf - 18212029 - Q4 MufflerFeaturesTwin-stage core design for lower sound output and extended life of packing materialComes standard with spark arrestorSpecsTypeSlip-OnUnitsEachModelQ4Riding...
    $449.99
    Qty in Cart: 0
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    $449.99
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  • Fmf - 042383 - Factory 4.1 Muffler Fmf - 042383 - Factory 4.1 Muffler

    Fmf - 042383 - Factory 4.1 Muffler

    FMF

    $349.99
    Fmf - 18212023 - Factory 4.1 MufflerFeaturesThe lightest mufflers availableSuperior power and performance - horsepower improved throughout the rpm rangeFeature exclusive proprietary Chamber Core...
    $349.99
    Qty in Cart: 0
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    $349.99
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  • Out of stock
    Fmf - 042382 - Factory 4.1 Muffler Fmf - 042382 - Factory 4.1 Muffler

    Fmf - 042382 - Factory 4.1 Muffler

    FMF

    $299.99
    Fmf - 18212022 - Factory 4.1 MufflerFeaturesThe lightest mufflers availableSuperior power and performance - horsepower improved throughout the rpm rangeFeature exclusive proprietary Chamber Core...
    $299.99
    Qty in Cart: 0
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    $299.99
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  • Fmf - 042387 - Powercore 4 Muffler Fmf - 042387 - Powercore 4 Muffler

    Fmf - 042387 - Powercore 4 Muffler

    FMF

    $399.99
    Fmf - 18212027 - Powercore 4 MufflerFeaturesComputer-designed and dyno-tested for every 4-stroke applicationEnhanced sonic evacuation delivers a higher flow of exhaust gases, which increases powerA...
    $399.99
    Qty in Cart: 0
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    $399.99
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  • Fmf - 041596 - Powercore 4 Muffler Fmf - 041596 - Powercore 4 Muffler

    Fmf - 041596 - Powercore 4 Muffler

    FMF

    $399.99
    Fmf - 18212026 - Powercore 4 MufflerFeaturesDurable stainless steel and aluminum constructionAdvanced packing material for maximum longevityRemovable spark arrestor includedSpecsEnd Cap...
    $399.99
    Qty in Cart: 0
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    $399.99
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  • Fmf - 041595 - Factory 4.1 Muffler Fmf - 041595 - Factory 4.1 Muffler

    Fmf - 041595 - Factory 4.1 Muffler

    FMF

    $349.99
    Fmf - 18212021 - Factory 4.1 MufflerFeaturesThe lightest mufflers availableSuperior power and performance - horsepower improved throughout the rpm rangeFeature exclusive proprietary Chamber Core...
    $349.99
    Qty in Cart: 0
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    $349.99
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  • Fmf - 025183 - Factory Fatty Pipe Fmf - 025183 - Factory Fatty Pipe

    Fmf - 025183 - Factory Fatty Pipe

    FMF

    $299.99
    Fmf - 18201683 - 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
    Qty in Cart: 0
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    $299.99
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  • Fmf - 025182 - Fatty Pipe Fmf - 025182 - Fatty Pipe

    Fmf - 025182 - Fatty Pipe

    FMF

    $299.99
    Fmf - 18201682 - 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
    Qty in Cart: 0
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    $299.99
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  • Fmf - 025181 - Turbinecore 2.1 Muffler Fmf - 025181 - Turbinecore 2.1 Muffler

    Fmf - 025181 - Turbinecore 2.1 Muffler

    FMF

    $219.99
    Fmf - 18211759 - 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...
    $219.99
    Qty in Cart: 0
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    $219.99
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  • Fmf - 025260 - Turbinecore 2 Silencer Fmf - 025260 - Turbinecore 2 Silencer

    Fmf - 025260 - Turbinecore 2 Silencer

    FMF

    $219.99
    Fmf - 18211949 - 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
    Qty in Cart: 0
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    $219.99
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  • Fmf - 040678 - 94dB Spark Arrestor Insert - 4.1 RCT Fmf - 040678 - 94dB Spark Arrestor Insert - 4.1 RCT

    Fmf - 040678 - 94dB Spark Arrestor Insert - 4.1 RCT

    FMF

    $39.99
    Fmf - 18611097 - 94dB Spark Arrestor Insert - 4.1 RCTFeaturesSpecsProduct NameScreen InsertRiding StyleOff-RoadTypeSpark ArrestorMaterialStainless SteelModelFactory 4.1ModelFactory 4.1 RCTUnitsEach
    $39.99
    Qty in Cart: 0
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    $39.99
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  • Out of stock
    Fmf - 041607 - Megabomb Header Fmf - 041607 - Megabomb Header

    Fmf - 041607 - Megabomb Header

    FMF

    $474.99
    Fmf - 18220528 - Megabomb HeaderFeaturesSpecsMaterialTitaniumDesign/Configuration1-Into-1 SystemModelMegaBombProduct NameHeaderUnitsEachRiding StyleOff-RoadFitment2022-2024HondaCRF250R
    $474.99
    Qty in Cart: 0
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    $474.99
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  • Out of stock
    Fmf - 043364 - Factory 4.1 RCT Muffler - Aluminum Fmf - 043364 - Factory 4.1 RCT Muffler - Aluminum

    Fmf - 043364 - Factory 4.1 RCT Muffler - Aluminum

    FMF

    $599.99
    Fmf - 18211857 - 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...
    $599.99
    Qty in Cart: 0
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    $599.99
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  • Fmf - 045640 - MegaBomb Header Fmf - 045640 - MegaBomb Header

    Fmf - 045640 - MegaBomb Header

    FMF

    $474.99
    Fmf - 18220494 - 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
    Qty in Cart: 0
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    $474.99
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  • Fmf - 025231 - Turbinecore 2.1 Muffler Fmf - 025231 - Turbinecore 2.1 Muffler

    Fmf - 025231 - Turbinecore 2.1 Muffler

    FMF

    $269.99
    Fmf - 18211864 - 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
    Qty in Cart: 0
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    $269.99
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  • Fmf - 041606 - Megabomb Header Fmf - 041606 - Megabomb Header

    Fmf - 041606 - Megabomb Header

    FMF

    $374.99
    Fmf - 18220527 - Megabomb HeaderFeaturesSpecsModelMegaBombDesign/Configuration1-Into-1 SystemMaterialStainless SteelUnitsEachRiding StyleOff-RoadProduct NameHeaderFitment2022-2024HondaCRF250R
    $374.99
    Qty in Cart: 0
    Quantity:
    Price:
    $374.99
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  • Fmf - 041577 - MegaBomb Header Fmf - 041577 - MegaBomb Header

    Fmf - 041577 - MegaBomb Header

    FMF

    $374.99
    Fmf - 18220490 - 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
    Qty in Cart: 0
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    Price:
    $374.99
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  • Fmf - 024077 - Exhaust Factory Fatty Pipe Fmf - 024077 - Exhaust Factory Fatty Pipe

    Fmf - 024077 - Exhaust Factory Fatty Pipe

    FMF

    $299.99
    Fmf - 18202013 - Exhaust Factory Fatty PipeFeatures19 Gauge steel used for the header portionHand pounded seams for smooth flow transitionsO-rings IncludedSpecsMaterialSteelRiding...
    $299.99
    Qty in Cart: 0
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    $299.99
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  • Fmf - 041612 - 4.1 RCT Exhaust System Fmf - 041612 - 4.1 RCT Exhaust System

    Fmf - 041612 - 4.1 RCT Exhaust System

    FMF

    $1,049.99
    Fmf - 18202002 - 4.1 RCT Exhaust SystemFeaturesIn addition, we achieve a shorter overall length that is less susceptible to crash damage and complementary to our Factory Forward Engineering - moving...
    $1,049.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,049.99
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  • Fmf - 024068 - Fatty Pipe Fmf - 024068 - Fatty Pipe

    Fmf - 024068 - Fatty Pipe

    FMF

    $289.99
    Fmf - 18201827 - Fatty PipeFeaturesTru-Flo stamping process ensures a perfect fit and optimum performanceConstructed of strong 19-gauge steel with a nickel-plated...
    $289.99
    Qty in Cart: 0
    Quantity:
    Price:
    $289.99
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  • Fmf - 043373 - Factory 4.1 RCT Muffler - Anodized Titanium Fmf - 043373 - Factory 4.1 RCT Muffler - Anodized Titanium

    Fmf - 043373 - Factory 4.1 RCT Muffler - Anodized Titanium

    FMF

    $749.99
    Fmf - 18211959 - 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
    Qty in Cart: 0
    Quantity:
    Price:
    $749.99
    Subtotal:
  • Fmf - 025263 - Fatty Pipe Fmf - 025263 - Fatty Pipe

    Fmf - 025263 - Fatty Pipe

    FMF

    $299.99
    Fmf - 18220489 - Fatty PipeFeaturesThe Fatty broadens 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
    Qty in Cart: 0
    Quantity:
    Price:
    $299.99
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  • Fmf - 042376 - Factory 4.1 RCT Muffler - Anodized Titanium Fmf - 042376 - Factory 4.1 RCT Muffler - Anodized Titanium

    Fmf - 042376 - Factory 4.1 RCT Muffler - Anodized Titanium

    FMF

    $749.99
    Fmf - 18211955 - 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
    Qty in Cart: 0
    Quantity:
    Price:
    $749.99
    Subtotal:
  • Out of stock
    Fmf - 025233 - Turbinecore 2.1 Muffler Fmf - 025233 - Turbinecore 2.1 Muffler

    Fmf - 025233 - Turbinecore 2.1 Muffler

    FMF

    $269.99
    Fmf - 18211866 - 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
    Qty in Cart: 0
    Quantity:
    Price:
    $269.99
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  • Fmf - 041578 - Q4 HEX Muffler Fmf - 041578 - Q4 HEX Muffler

    Fmf - 041578 - Q4 HEX Muffler

    FMF

    $449.99
    Fmf - 18211952 - 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
    Qty in Cart: 0
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    $449.99
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  • Fmf - 043365 - Factory 4.1 RCT Muffler - Anodized Titanium Fmf - 043365 - Factory 4.1 RCT Muffler - Anodized Titanium

    Fmf - 043365 - Factory 4.1 RCT Muffler - Anodized Titanium

    FMF

    $749.99
    Fmf - 18211858 - 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
    Qty in Cart: 0
    Quantity:
    Price:
    $749.99
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  • Fmf - 040691 - Heat Shield Fmf - 040691 - Heat Shield

    Fmf - 040691 - Heat Shield

    FMF

    $89.99
    Fmf - 18611607 - Heat ShieldFeaturesSpecsUnitsEachProduct NameHeat ShieldMaterialTitaniumRiding StyleStreetFitment2019-2026YamahaYZ250F2018-2025YamahaYZ450F2020-2026YamahaYZ250FX2019-2024YamahaYZ450FX
    $89.99
    Qty in Cart: 0
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    Price:
    $89.99
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  • Fmf - 042338 - MegaBomb Header - Stainless Steel - '16-'18 KX450F Fmf - 042338 - MegaBomb Header - Stainless Steel - '16-'18 KX450F

    Fmf - 042338 - MegaBomb Header - Stainless Steel - '16-'18 KX450F

    FMF

    $374.99
    Fmf - 18220445 - MegaBomb Header - Stainless Steel - '16-'18 KX450FFeaturesImproved bottom to mid-range powerLess susceptible to damage than a longer headerEffectively reduces sound output by as much...
    $374.99
    Qty in Cart: 0
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    Price:
    $374.99
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  • Fmf - 041604 - Factory 4.1 RCT Exhaust - Aluminum Fmf - 041604 - Factory 4.1 RCT Exhaust - Aluminum

    Fmf - 041604 - Factory 4.1 RCT Exhaust - Aluminum

    FMF

    $1,049.99
    Fmf - 18201993 - Factory 4.1 RCT Exhaust - AluminumFeaturesInternal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains throughout the...
    $1,049.99
    Qty in Cart: 0
    Quantity:
    Price:
    $1,049.99
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  • Fmf - 041586 - PowerCore 4 HEX Muffler Fmf - 041586 - PowerCore 4 HEX Muffler

    Fmf - 041586 - PowerCore 4 HEX Muffler

    FMF

    $399.99
    Fmf - 18113799 - PowerCore 4 HEX MufflerFeaturesDurable stainless steel and aluminum constructionSpace Age internal packing material for maximum longevityInternal shape of core uses Hi-Flo...
    $399.99
    Qty in Cart: 0
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    Price:
    $399.99
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  • Out of stock
    Fmf - 025214 - Powercore 2.1 Shorty Muffler Fmf - 025214 - Powercore 2.1 Shorty Muffler

    Fmf - 025214 - Powercore 2.1 Shorty Muffler

    FMF

    $449.99
    Fmf - 18211817 - 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
    Qty in Cart: 0
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    $449.99
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Adding your products to cart

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.