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 - 041611 - 4.1 RCT Slip-On Muffler
FMF
$899.99Fmf - 18212053 - 4.1 RCT Slip-On MufflerFeaturesNew RTS (Rapid Tuning System)Huge weight savingsSpecsEnd Cap StyleConicalColor/FinishBlueEnd Cap Color/FinishBlackRiding StyleOff-RoadProduct...$899.99 -
Fmf - 025282 - Turbinecore 2 Muffler
FMF
$219.99Fmf - 18212064 - Turbinecore 2 MufflerFeaturesSpecsProduct NameMufflerPipe MaterialStainless SteelRiding StyleOff-RoadMaterialAluminumEnd Cap StyleSlash-CutModelTurbineCore...$219.99 -
Fmf - 041610 - 4.1 RCT Slip-On Muffler
FMF
$674.99Fmf - 18212052 - 4.1 RCT Slip-On MufflerFeaturesNew RTS (Rapid Tuning System)Huge weight savingsSpecsColor/FinishNaturalModelFactory 4.1 RCTTypeSlip-OnEnd Cap StyleConicalEnd Cap MaterialCarbon...$674.99 -
Fmf - 024079 - Powercore 2 Muffler
FMF
$199.99Fmf - 18212055 - Powercore 2 MufflerFeaturesThe lightweight extruded aluminum oval canister mated to a perforated core puts this silencer is above the competitionSpecsEnd Cap StyleConicalPipe...$199.99 -
Out of stock
Fmf - 041609 - Q4 Hex Muffler
FMF
$449.99Fmf - 18212051 - Q4 Hex MufflerFeaturesRugged design for off-road enduranceMeets USFS and FIM World Enduro sound regulationsSpark arrestor includedPounds lighter than stockMade in the U.S.A.SpecsEnd...$449.99 -
Out of stock
Fmf - 014896 - Exhaust O-Rings
FMF
$9.99Fmf - 18602412 - Exhaust O-RingsFeaturesSpecsTypeExhaustRiding StyleOff-RoadUnitsPairProduct NameO-RingFitment2016-2026YamahaYZ250X1999-2026YamahaYZ250$9.99 -
Fmf - 014893 - Exhaust O-Rings
FMF
$9.99Fmf - 18602409 - Exhaust O-RingsFeaturesSpecsRiding StyleOff-RoadTypeExhaustProduct NameO-RingUnitsPairFitment2020-2022YamahaYZ125X1989-2021YamahaYZ125$9.99 -
Fmf - 014890 - Exhaust O-Rings
FMF
$9.99Fmf - 18602406 - Exhaust O-RingsFeaturesSpecsProduct NameO-RingTypeExhaustUnitsPairRiding StyleOff-RoadFitment1997-2007SuzukiRM125$9.99 -
Fmf - 040689 - Quiet Core Insert - 4.1 RCT
FMF
$39.99Fmf - 18611666 - Quiet Core Insert - 4.1 RCTFeaturesSpecsModelFactory 4.1 RCTTypeQuiet CoreProduct NameInsertUnitsEachRiding StyleOff-Road$39.99 -
Fmf - 014894 - Exhaust O-Rings
FMF
$9.99Fmf - 18602410 - Exhaust O-RingsFeaturesSpecsRiding StyleOff-RoadProduct NameO-RingTypeExhaustUnitsEachFitment1987-1994YamahaYZ250$9.99 -
Fmf - 014889 - Exhaust O-Rings
FMF
$9.99Fmf - 18602405 - Exhaust O-RingsFeaturesSpecsTypeExhaustUnitsPairProduct NameO-RingRiding StyleOff-RoadFitment1991-1994KawasakiKX 1001995-1997KawasakiKX1001991-1997KawasakiKX80$9.99 -
Fmf - 014885 - Exhaust O-Rings
FMF
$9.99Fmf - 18602401 - Exhaust O-RingsFeaturesSpecsRiding StyleOff-RoadProduct NameO-RingUnitsPairTypeExhaustFitment2019-2026YamahaYZ851988-2002KawasakiKX125$9.99 -
Fmf - 014884 - Exhaust O-Rings
FMF
$9.99Fmf - 18602400 - Exhaust O-RingsFeaturesSpecsRiding StyleOff-RoadUnitsPairTypeExhaustProduct NameO-RingFitment2006-2007KawasakiKX 1252003-2005KawasakiKX125$9.99 -
Out of stock
Fmf - 014882 - Exhaust O-Rings
FMF
$9.99Fmf - 18602398 - Exhaust O-RingsFeaturesSpecsRiding StyleOff-RoadUnitsPairTypeExhaustProduct NameO-RingFitment1992-2007HondaCR250R$9.99 -
Out of stock
Fmf - 014881 - Exhaust O-Rings
FMF
$9.99Fmf - 18602397 - Exhaust O-RingsFeaturesSpecsProduct NameO-RingRiding StyleOff-RoadTypeExhaustUnitsPairFitment2025Beta300 RR 2T2020-2021, 2025Beta250 RR 2T2013-2024Beta300 RR2013-2019,...$9.99 -
Out of stock
Fmf - 014892 - Exhaust O-Rings
FMF
$9.99Fmf - 18602408 - Exhaust O-RingsFeaturesSpecsTypeExhaustProduct NameO-RingRiding StyleATVUnitsEachFitment1986-1989HondaTRX250R$9.99 -
Fmf - 014880 - Exhaust O-Rings
FMF
$9.99Fmf - 18602396 - Exhaust O-RingsFeaturesSpecsRiding StyleATVTypeExhaustProduct NameO-RingUnitsPairFitment2003-2005YamahaBanshee 350 LE 4x22005YamahaBanshee 350 SE 4x21987-2005YamahaYFZ350 Banshee$9.99 -
Fmf - 042399 - MegaBomb Header - Stainless Steel
FMF
$374.99Fmf - 18220549 - MegaBomb Header - Stainless SteelFeaturesSpecsMaterialStainless SteelUnitsEachRiding StyleOff-RoadProduct NameHeaderModelMegaBombFitment2024-2025KawasakiKX4502024-2025KawasakiKX450X$374.99 -
Fmf - 042404 - Factory 4.1 RCT Slip-On Muffler - Titanium - Carbon Fiber Cap
FMF
$899.99Fmf - 18212094 - Factory 4.1 RCT Slip-On Muffler - Titanium - Carbon Fiber CapFeatures94dB insert includedFor closed course competition use onlySpecsTypeSlip-OnUnitsEachEnd Cap MaterialCarbon...$899.99 -
Fmf - 044478 - Factory 4.1 RCT Exhaust System - Titanium - Carbon Fiber End Cap
FMF
$1,374.99Fmf - 18202048 - Factory 4.1 RCT Exhaust System - Titanium - Carbon Fiber End CapFeaturesShorter overall length that is less susceptible to crash damage and complementary to Factory Forward...$1,374.99 -
Out of stock
Fmf - 045689 - Megabomb Header - Titanium
FMF
$474.99Fmf - 18220551 - Megabomb Header - TitaniumFeaturesSpecsModelMegaBombRiding StyleOff-RoadMaterialTitaniumUnitsEachProduct NameHeaderFitment2024-2025Beta450 RX$474.99 -
Fmf - 042400 - SX MegaBomb Header - Titanium
FMF
$474.99Fmf - 18220550 - SX MegaBomb Header - TitaniumFeaturesSpecsMaterialTitaniumRiding StyleOff-RoadUnitsEachModelSX MegabombProduct NameHeaderFitment2024-2025KawasakiKX4502024-2025KawasakiKX450X$474.99 -
Fmf - 042406 - Factory 4.1 RCT Exhaust System - Titanium - Carbon End Cap
FMF
$1,374.99Fmf - 18202046 - Factory 4.1 RCT Exhaust System - Titanium - Carbon End CapFeatures94dB insert includedFor closed course competition onlySpecsProduct NameExhaust SystemTypeRaceUnitsEachRiding...$1,374.99 -
Fmf - 042402 - Q4 Hex Slip-On Muffler
FMF
$449.99Fmf - 18212092 - Q4 Hex Slip-On MufflerFeaturesFor closed course competition onlySpecsEnd Cap MaterialStainless SteelMuffler Color/FinishGreyTypeSlip-OnMuffler Color/FinishAnodizedMuffler...$449.99 -
Out of stock
Fmf - 022067 - Turbinecore Muffler
FMF
$219.99Fmf - 18212089 - Turbinecore MufflerFeaturesU.S. Forest approved silencerSpecsUnitsEachRiding StyleOff-RoadModelTurbineCoreTypeSilencerProduct NameMufflerFitment1988-2004KawasakiKX500$219.99 -
Fmf - 044476 - MegaBomb Header - Titanium - YZ450F
FMF
$524.99Fmf - 18220540 - MegaBomb Header - Titanium - YZ450FFeaturesSpecsModelMegaBombProduct NameHeaderRiding...$524.99 -
Fmf - 044477 - Factory 4.1 RCT Exhaust System - Aluminum - Stainless Steel Header - Carbon Fiber End Cap
FMF
$1,074.99Fmf - 18202047 - Factory 4.1 RCT Exhaust System - Aluminum - Stainless Steel Header - Carbon Fiber End CapFeaturesShorter overall length that is less susceptible to crash damage and complementary to...$1,074.99 -
Fmf - 044475 - MegaBomb Header - Stainless Steel - YZ450F
FMF
$424.99Fmf - 18220539 - MegaBomb Header - Stainless Steel - YZ450FFeaturesSpecsModelMegaBombProduct NameHeaderRiding StyleOff-RoadMaterialStainless...$424.99 -
Fmf - 025297 - Gold Series Fatty™ Pipe
FMF
$299.99Fmf - 18202036 - Gold Series Fatty™ PipeFeaturesCarbon steel with a nickel plated finish for maximum durabilityFMF Racing’s Tru-Flo stamping process ensures a perfect fit and optimum...$299.99 -
Fmf - 014895 - Exhaust O-Rings
FMF
$9.99Fmf - 18602411 - Exhaust O-RingsFeaturesSpecsRiding StyleOff-RoadTypeExhaustUnitsEachProduct NameO-RingFitment1995-1998YamahaYZ250$9.99 -
Out of stock
Fmf - 014891 - Exhaust O-Rings
FMF
$9.99Fmf - 18602407 - Exhaust O-RingsFeaturesSpecsRiding StyleOff-RoadUnitsPairProduct NameO-RingTypeExhaustFitment1994-2008SuzukiRM250$9.99 -
Out of stock
Fmf - 014888 - Exhaust O-Rings
FMF
$9.99Fmf - 18602404 - Exhaust O-RingsFeaturesSpecsProduct NameO-RingRiding StyleOff-RoadUnitsPairTypeExhaustFitment2002, 2004-2011SuzukiRM 1002002-2009, 2012, 2015-2023SuzukiRM851998-2009,...$9.99 -
Out of stock
Fmf - 014887 - Exhaust O-Rings
FMF
$9.99Fmf - 18602403 - Exhaust O-RingsFeaturesSpecsProduct NameO-RingRiding StyleOff-RoadUnitsPairTypeExhaustFitment1988-2004KawasakiKX2501988-2004KawasakiKX500$9.99 -
Fmf - 014886 - Exhaust O-Rings
FMF
$9.99Fmf - 18602402 - Exhaust O-RingsFeaturesSpecsRiding StyleOff-RoadUnitsPairProduct NameO-RingTypeExhaustFitment2005-2007KawasakiKX250$9.99 -
Fmf - 014883 - Exhaust O-Rings
FMF
$9.99Fmf - 18602399 - Exhaust O-RingsFeaturesSpecsTypeExhaustRiding StyleOff-RoadUnitsPairProduct NameO-RingFitment1989-2001HondaCR500R$9.99 -
Fmf - 025298 - Q Series Silencer
FMF
$219.99Fmf - 18212083 - Q Series SilencerFeaturesMeets the mandated 96dB sound level set by the US Forest ServiceSerious sound deadening qualities and excellent powerSpecsModelQ SeriesRiding...$219.99 -
Out of stock
Fmf - 042405 - Factory 4.1 RCT Exhaust System - Stainless Steel - Carbon End Cap
FMF
$1,049.99Fmf - 18202045 - Factory 4.1 RCT Exhaust System - Stainless Steel - Carbon End CapFeatures94dB insert includedFor closed course competition onlySpecsProduct NameExhaust...$1,049.99 -
Fmf - 042401 - Powercore 4 Hex Slip-On Muffler
FMF
$399.99Fmf - 18212091 - Powercore 4 Hex Slip-On MufflerFeaturesClosed course competition use onlySpecsModelPowerCore 4 HEXProduct NameMufflerRiding StyleOff-RoadUnitsEachMuffler Color/FinishAnodizedMuffler...$399.99 -
Out of stock
Fmf - 045690 - 4.1 RCT Slip-On Muffler
FMF
$899.99Fmf - 18212102 - 4.1 RCT Slip-On MufflerFeaturesShorter overall length that is less susceptible to crash damage, moving the muffler closer to the motor to centralize massConstructed from only...$899.99 -
Fmf - 042403 - Factory 4.1 RCT Slip-On Muffler - Stainless Steel - Carbon Fiber Cap
FMF
$674.99Fmf - 18212093 - Factory 4.1 RCT Slip-On Muffler - Stainless Steel - Carbon Fiber CapFeatures94dB insert includedFor closed course competition use onlySpecsEnd Cap Color/FinishBlackPipe...$674.99
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.