Availability
FMF Racing Factory 4.1 RCT mufflers offer the latest technology inside and out. Hand-built using aerospace-grade materials, they feature Resonance Chamber Technology. FMF's patented core enhances and refines exhaust pressure waves for optimal power output, while lowering the sound levels. Their redesigned canister shape allows for a maximum volume of packing material that's formulated for durability and sound attenuation. Plus, their RTS (Rapid Tuning System) makes for easy sound insert changes, as well as adding US Forestry Approved Spark Arrestors. They're constructed using aerospace-grade materials, run quieter than stock, and gain huge weight savings and massive power throughout the rpm range. FMF Racing Factory 4.1 RCT mufflers--not only do they sound amazing, but look amazing, too!
Not Yet Reviewed
$449.99
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$809.99
FMF Racing Mini Factory 4.1 exhaust systems are all-out performance systems for play bikes, making you the king of your own little domain and making you look great while doing it. They provide superior power and have a header that's available in titanium or stainless steel. They're customizable with different tuning inserts and spark arrestors. If you want only the best for your mini bike, FMF Racing Mini Factory 4.1 exhaust systems deliver.
Not Yet Reviewed
$368.99
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$413.99
FMF Racing's Mini Factory 4.1 slip-on mufflers styling is similar to 4.1 RCT big bike products, with an aggressive look and sound—only lacking the big bike model's internal resonance chamber module. The Factory 4.1 achieves a shorter overall length that is less susceptible to crash damage and complementary to the Factory Forward Engineering, moving mufflers closer to the motor to centralize mass. Visible changes to the exterior include a redesigned canister to increase internal capacity for maximum volume of packing material—which itself is a proprietary blend formulated for superior durability and sound attenuation. The rear endcap has been engineered to provide simple tuning adjustments, incorporating a snap ring feature to secure both the standard and optional inserts. Key features and benefits: * Available in stainless steel or FMFs exclusive Ti-Metal construction * Lightweight—offering huge weight savings * Massive power gains throughout the rpm range * Factory Forward Engineering centralizes mass—improving handling * RTS (Rapid Tuning System) for quick and easy trackside tuning * Tuned exhaust with optimized core specifications for each application * Patented core shape lowers sound level while maintaining maximum power output * Patented canister shape increases internal volume for more sound absorbing material * Quiet insert included (94db) * Removable spark arrestor included on most models * Can be used with FMF or stock OEM header
Not Yet Reviewed
$269.99
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$314.99
FMF Racing Factory Fatty pipes are a close reincarnation of the "works" pipe used years ago by factory teams, sharing many of the same characteristics, with their craftsmanship and material quality. Designed to broaden and smooth out your entire power band, they give them the benefits you're looking for, no matter what type of riding you do. They feature lighter 20-gauge steel on the body, 19-gauge steel on the header portion, and have hand-pounded seams for smooth flow transition. If you're looking for a great pipe that offers better all-around power, FMF Racing Factory Fatty pipes are the ones for you.
Not Yet Reviewed
$260.99
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$269.99
Clearance
FMF Racing Factory 4.1/MegaBomb exhaust systems are the lightest full exhaust systems available that provide superior power and performance in all rpm ranges. Designed to give you the best possible handling through a centralized mass, they're constructed from aerospace-grade titanium that's available in a natural or anodized blue finish. They meet AMA sound requirements and have spark arrestor modules available separately. If you're looking for a light, high-quality full exhaust system for your ride, look no further than FMF Racing Factory 4.1/MegaBomb exhaust systems.
Not Yet Reviewed
$944.99
$709.50
Clearance
FMF Racing Factory 4.1 RCT/MegaBomb exhaust systems are top-of-the-line race systems. They are designed to boost power at all rpm and keep you at decibel levels that will keep you street legal. Quality-constructed from aluminum, stainless steel, or titanium, depending on model, the majority of these exhaust systems have a carbon fiber end cap. If you're looking for a new exhaust system that has great looks, along with excellent sound and performance, look no further than FMF Racing Factory 4.1 RCT/MegaBomb exhaust systems. Order the model designed for fitment on your application.
Not Yet Reviewed
$944.99
$939.50
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$1,079.99
FMF Racing offers Factory Fatty Rev Pipes for a variety of off-road motorcycles, including models from Yamaha, Gas Gas, Husqvarna, KTM, and Kawasaki. These pipes focus their power delivery in the middle and upper RPMs of the powerband. If 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 choice. Additional details: * FMF Racing's Tru-Flo stamping process ensures a perfect fit and optimum performance * Dyno and track tested for every application * Includes O-rings
Not Yet Reviewed
$269.99
FMF Racing Factory 4.1 RCT/PowerBomb exhaust systems are complete systems designed to provide massive power gains throughout the rpm range. Constructed from lightweight aluminum mufflers and aerospace-grade stainless steel PowerBomb headers and midpipes, Factory 4.1 RCT/PowerBomb systems are top-notch quality. They incorporate the latest in internal and external FMF Resonance Chamber Technology and FMF's Rapid Tuning System (RTS). Their shorter overall length makes them less vulnerable to crash damage, and the Factory Forward Engineering of these systems moves the muffler closer to the motor, centralizing mass and improving overall handling.
Not Yet Reviewed
$944.99
FMF Racing offers O-ring rebuild kits for a variety of off-road motorcycles, including many KTM, Husqvarna, and Gas Gas models from the early 2000s and up. The stock replacements are made from Viton© rubber according to factory specs, ensuring proper fit and long-lasting performance.
Not Yet Reviewed
$11.69
FMF Racing offers PowerCore 2 Shorty Big Bore silencers for a variety of applications, including select Kawasaki, Husqvarna, KTM, and Gas Gas off-road bikes from 2002 and up. Perfect for shorter, tight tracks, these powersports mufflers deliver a more immediate burst of power in the low- to mid-RPM range with slightly less over-rev than a longer silencer. They have an aluminum muffler sleeve that delivers an explosive hit and a distinctive sound when the throttle is cracked. PowerCore silencers are ideal for use on extremely tight circuits or anywhere the run up to jumps are shorter than you'd like. Additional details: * The most popular 2-stroke silencers in FMF's arsenal * The elliptically shaped bodies with perforated core perform well in any condition * Equipped with a Performance Flow end cap and nickel-plated front stinger * The FMF Big Bore Shorty Silencer is a specially designed version of the FMF PowerCore 2 that's built for big-bore equipped machines * Only fits machines equipped with FMF pipes * Improves throttle response, quicker revs at lower RPMs * Hi-Flo technology silencer design that's perfectly suited to big-bore engines * Factory performance * Easily serviced for repacking
Not Yet Reviewed
$179.99
FMF Racing Powercore silencers provide a factory look and sound with more power. Lightweight and compact, these silencers are manufactured from extruded aluminum with a nickel plated stinger and end cap. Plus, they are fully rebuildable using basic hand tools and offer a stock appearance with aftermarket performance. Get more from your rides with the bolt-on performance of FMF Powercore silencers.
Not Yet Reviewed
$179.99
FMF Racing TurbineCore silencers offer lightweight, compact power. Featuring their exclusive Turbine Dampening System, they are US Forest approved. Handcrafted TurbineCore silencers will make your older race machines US Forest legal and will give them an updated factory look and sound. And, since there are no rivets to drill out, re-packing is easy. Put them on and leave them on--TurbineCore silencers from FMF Racing.
Not Yet Reviewed
$197.99
FMF Racing spark arrestor quiet inserts lower decibels and traps hot exhaust particles. They are quick and easy to install, and will include quiet spark arrestor insert and spiral retaining ring.
Not Yet Reviewed
$35.99
FMF Racing Gnarly pipes add 4-stroke, tractor-like torque to your 2-stroke--and they can withstand harsh elements. They are built from super-strong, 18-gauge steel and nickel plated. The expansion chambers focus on increasing the lower rpm horsepower and torque to get you out of the toughest terrain. If you're looking for more bottom end, these remarkable and outstanding Gnarly pipes from FMF Racing won't let you down!
( 7 )
$269.99
FMF Racing Powercore 2 silencers give your 2-stroke a performance edge. With their lightweight extruded aluminum oval canister mated to a perforated core and hand-built from start to finish, these silencers are laps beyond the competition. Their stainless steel performance flow end cap and front stinger offer not only unbeatable durability, but unmatched looks. Go for more with the bolt-on performance of FMF Powercore 2 silencers.
Not Yet Reviewed
$179.99
FMF Racing TurbineCore 2 silencers are one of the most popular and best performing options for riding on the track or trail. These slip-on mufflers feature FMF's exclusive Turbine Dampening System built into their core, a straight-through spark arrestor canister design, and performance flow stainless steel end caps. They have earned US Forest legal status and deliver strength, durability, and, most importantly, track- and trail-proven unrestricted power. For top-notch power and performance, bolt on the best-selling TurbineCore 2 silencers from FMF Racing.
( 1 )
$197.99
FMF Racing is about moving forward ... faster! Their all-new Powercore 2.1 silencers are proof that FMF Racing is totally committed to 2-stroke progression. Built to give your 2-stroke machine the power needed to attack today's tracks and trails, the Powercore 2.1 produces a smooth, broad spread of power and a noticeably crisp exhaust note. And, with the muffler's lightweight titanium or extruded aluminum oval canisters mated to a perforated core, the FMF Powercore 2.1 silencers are above and beyond the competition! Key attributes include: * Optimally designed to complement performance of FMF pipes; works and fits FMF or stock * Lighter weight than stock * Race-tested, smooth power curve throughout the rpm range * Larger diameter canister for more tunability and longer lasting packing life * Delivers a crisp, notable sound
Not Yet Reviewed
$215.99
FMF Racing is a world leader in high performance quiet technology, and Q4 Series slip-on mufflers are an evolution in exhaust. They employ intricate chambers, baffles, and proprietary multistage packing material, making them the best-performing, quiet mufflers available. They were developed over years of championship off-road racing and are constructed from aircraft-grade aluminum and high-strength stainless steel to bring you superior performance. FMF Racing Q4 Series slip-on mufflers don't make you hear power. They make you feel it!
( 1 )
$404.99
FMF Racing's MegaBomb headers deliver more useable power and can lower noise levels by as much as 1.5dB. FMF Racing MegaBomb Plus header pipes provide all the awesome benefits of the originals, along with updated resonance chamber technology for better performance. The patented header design allows exhaust gasses to expand, cool, and ramp back up at a higher velocity, resulting in torque gains typically associated with longer headers and the healthy over-rev of a short header. When combined with an FMF Racing slip-on muffler, gains of up to 3 hp can be achieved with a stock motor. FMF MegaBomb Plus headers are best suited for Motocross, Supercross, and GNCC-style riding where more bottom to low end response is desired. Choose the MegaBomb Plus headers designed for your dirt bike.
Not Yet Reviewed
$337.49
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$427.49
Delivering race-inspired performance at an economical price, FMF Racing Powercore 4 Hex slip-on mufflers deliver quality with improved torque, increased horsepower, and rugged durability all at a price that won't break the bank. Features: * Overall increase in power and torque * Durable stainless steel and aluminum construction * Space Age internal packing material for maximum longevity * Internal shape of core uses Hi-Flo technology * Enhanced sonic evacuation provides for higher flow and increased power * Includes removable spark arrestor
Not Yet Reviewed
$494.99
FMF Racing is the leader in high performance quiet technology and their Q4 HEX S/A slip-on mufflers are the next evolution in off-road exhaust. These slip-on mufflers employ intricate chambers, baffles and proprietary multistage packing material which makes them the best performing quiet muffler available. With the Q4 you don't need to hear the power, just feel the power! FMF approached the design process of the Q4 HEX with the goal of achieving more power, while keeping noise levels to a minimum. After countless hours of testing, FMF proved you don't have to settle for a plugged up, horsepower-robbing moto muffler to remain sound compliant. Key features: * Rugged design for off-road endurance * Less sound equals more ground * Meets USFS and FIM World Enduro sound regulations * Power gains throughout the entire rpm range * Spark arrestor included * Pounds lighter than stock
( 1 )
$512.99
FMF Racing is about moving forward ... faster! The all-new TurbineCore 2.1 silencers are proof that FMF is totally committed to 2-stroke progression. Built to give your 2-stroke machine the power needed to attack today's tracks and trails, these mufflers produce a smooth, broad spread of power—and a noticeably crisp exhaust note. With the mufflers lightweight titanium or extruded aluminum oval canisters mated to a perforated core, the FMF TurbineCore 2.1 silencers are above and beyond the competition! Key attributes include: * Race-tested, smooth power curve throughout the rpm range * Optimally designed to complement performance of FMF pipes; works and fits FMF or stock * Larger diameter canister for more tunability and longer lasting packing life * Lighter weight than stock
Not Yet Reviewed
$242.99
FMF Racing Powercore 4 slip-on mufflers are designed for closed course competition. Built to provide you with improved torque, increased horsepower, and rugged durability, they deliver race-inspired performance. They are made of durable stainless steel and aluminum construction, along with advanced packing material for maximum longevity. They also offer an optional 96 dB quiet insert. Get the power you crave for your ride with these FMF Racing Powercore 4 slip-on mufflers.
( 5 )
$359.99
FMF Racing replacement muffler end caps are offered in a variety of sizes. Each kit will include an end cap and stainless steel rivets.
( 2 )
$44.99
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$116.99
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