FMF

FMF Exhaust Systems for 2-Stroke and 4-Stroke Bikes

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FMF - Exhaust Wash Plug
Best Seller
Labor Day Deal
FMF - Exhaust Wash Plug
. Final price: $5.39 . Original price: $5.99
10% OFF
FMF - RCT Replacement Rear End Cap Kit
Labor Day Deal
FMF - RCT Replacement Rear End Cap Kit
Price range: $44.99 - $116.99
Up to 10% OFF
FMF - Exhaust Pipe Spring Puller Tool
Labor Day Deal
FMF - Exhaust Pipe Spring Puller Tool
. Final price: $14.39 . Original price: $15.99
10% OFF
FMF - Factory 4.1 RCT Complete System (Yamaha)
Labor Day Deal
FMF - Factory 4.1 RCT Complete System (Yamaha)
Price range: $967.49 - $1,237.49
Up to 10% OFF
FMF - KTM Powercore 4 Silencer
Labor Day Deal
FMF - KTM Powercore 4 Silencer
Price range: $359.99 - $399.99
Up to 10% OFF
FMF - Powercore 2 Shorty Silencer (Yamaha)
Labor Day Deal
FMF - Powercore 2 Shorty Silencer (Yamaha)
. Final price: $179.99 . Original price: $199.99
10% OFF
FMF - Powercore 4 Hex Slip-On Muffler (Yamaha)
Labor Day Deal
FMF - Powercore 4 Hex Slip-On Muffler (Yamaha)
Price range: $359.99 - $404.99
Up to 10% OFF
FMF - Factory 4.1 RCT Titanium Slip-On Exhaust w/Mid Pipe (Kawasaki)
Labor Day Deal
FMF - Factory 4.1 RCT Titanium Slip-On Exhaust w/Mid Pipe (Kawasaki)
Price range: $314.99 - $809.99
Up to 10% OFF
FMF - KTM Megabomb Headers
Labor Day Deal
FMF - KTM Megabomb Headers
Price range: $337.49 - $427.49
Up to 10% OFF
FMF - KTM Turbinecore 2.1 Silencer
Labor Day Deal
FMF - KTM Turbinecore 2.1 Silencer
. Final price: $242.99 . Original price: $269.99
10% OFF
FMF - KTM Factory 4.1 RCT Silencer
Labor Day Deal
FMF - KTM Factory 4.1 RCT Silencer
Price range: $584.99 - $769.49
Up to 10% OFF
FMF - Factory 4.1 RCT Complete System (Honda)
Labor Day Deal
FMF - Factory 4.1 RCT Complete System (Honda)
Price range: $944.99 - $1,349.99
Up to 10% OFF
FMF - Factory 4.1 RCT Titanium Slip-On Exhaust (Husqvarna)
Labor Day Deal
FMF - Factory 4.1 RCT Titanium Slip-On Exhaust (Husqvarna)
Price range: $584.99 - $769.49
Up to 10% OFF
FMF - Factory 4.1 RCT Aluminum Slip-On Exhaust w/Stainless Mid Pipe (Kawasaki)
Labor Day Deal
FMF - Factory 4.1 RCT Aluminum Slip-On Exhaust w/Stainless Mid Pipe (Kawasaki)
Price range: $413.99 - $607.49
Up to 10% OFF
FMF - Factory 4.1 RCT Complete System (KTM)
Labor Day Deal
FMF - Factory 4.1 RCT Complete System (KTM)
Price range: $1,057.49 - $1,237.49
Up to 10% OFF
FMF - Factory Fatty Pipe (Yamaha)
Labor Day Deal
FMF - Factory Fatty Pipe (Yamaha)
Price range: $269.99 - $296.99
Up to 10% OFF
FMF - Factory 4.1 RCT Slip-On (Honda)
Labor Day Deal
FMF - Factory 4.1 RCT Slip-On (Honda)
Price range: $269.99 - $899.99
Up to 10% OFF
FMF - Factory 4.1 RCT Titanium Slip-On Exhaust w/Mid Pipe (Honda)
Labor Day Deal
FMF - Factory 4.1 RCT Titanium Slip-On Exhaust w/Mid Pipe (Honda)
Price range: $314.99 - $899.99
Up to 10% OFF
FMF - Factory 4.1 RCT Titanium Slip-On Exhaust (KTM)
Labor Day Deal
FMF - Factory 4.1 RCT Titanium Slip-On Exhaust (KTM)
Price range: $584.99 - $769.49
Up to 10% OFF
FMF - Powercore 2.1 Silencer KTM/Husqvarna/GasGas 125/150's
FMF - Powercore 2.1 Silencer KTM/Husqvarna/GasGas 125/150's
. Final price: $239.99 . Original price:
FMF - Factory 4.1 RCT Complete System (Kawasaki)
Labor Day Deal
FMF - Factory 4.1 RCT Complete System (Kawasaki)
Price range: $877.49 - $1,237.49
Up to 10% OFF
FMF - Factory Fatty Pipe (KTM)
Labor Day Deal
FMF - Factory Fatty Pipe (KTM)
Price range: $269.99 - $296.99
Up to 10% OFF
FMF - Fatty Pipe (KTM)
Labor Day Deal
FMF - Fatty Pipe (KTM)
Price range: $260.99 - $296.99
Up to 10% OFF
FMF - Megabomb Titanium Header (Yamaha)
Labor Day Deal
FMF - Megabomb Titanium Header (Yamaha)
. Final price: $472.49 . Original price: $524.99
10% OFF
FMF - Fatty Pipe (Honda)
Labor Day Deal
FMF - Fatty Pipe (Honda)
Price range: $269.99 - $314.99
Up to 10% OFF
FMF - Powercore 4 Hex Slip-on Muffler (Kawasaki)
Labor Day Deal
FMF - Powercore 4 Hex Slip-on Muffler (Kawasaki)
Price range: $359.99 - $404.99
Up to 10% OFF
FMF - KTM Titanium Powercore 2.1 Silencer
Labor Day Deal
FMF - KTM Titanium Powercore 2.1 Silencer
. Final price: $404.99 . Original price: $449.99
10% OFF
FMF - Gnarly Pipe (KTM)
Labor Day Deal
FMF - Gnarly Pipe (KTM)
Price range: $269.99 - $314.99
Up to 10% OFF
FMF - Factory 4.1 RCT Aluminum Slip-On Exhaust w/Stainless Mid Pipe (KTM)
Labor Day Deal
FMF - Factory 4.1 RCT Aluminum Slip-On Exhaust w/Stainless Mid Pipe (KTM)
Price range: $449.99 - $607.49
Up to 10% OFF
FMF - Fatty Pipe (Yamaha)
Labor Day Deal
FMF - Fatty Pipe (Yamaha)
Price range: $260.99 - $305.99
Up to 10% OFF
FMF - Powercore 4 Muffler (Honda)
Labor Day Deal
FMF - Powercore 4 Muffler (Honda)
Price range: $359.99 - $404.99
Up to 10% OFF
FMF - Factory 4.1 RCT Aluminum Slip-On Exhaust w/Stainless Mid Pipe (Honda)
Labor Day Deal
FMF - Factory 4.1 RCT Aluminum Slip-On Exhaust w/Stainless Mid Pipe (Honda)
Price range: $269.99 - $607.49
Up to 10% OFF
FMF - KTM Factory Fatty Expansion Chamber
FMF - KTM Factory Fatty Expansion Chamber
. Final price: $299.99 . Original price:
FMF - Megabomb Stainless Header (Husqvarna)
Labor Day Deal
FMF - Megabomb Stainless Header (Husqvarna)
Price range: $313.19 - $472.49
Up to 10% OFF
FMF - Factory 4.1 RCT Complete System (Yamaha)
Labor Day Deal
FMF - Factory 4.1 RCT Complete System (Yamaha)
. Final price: $967.49 . Original price: $1,074.99
10% OFF
FMF - Factory 4.1 RCT Aluminum Slip-On Exhaust w/Stainless Mid Pipe (Husqvarna)
Labor Day Deal
FMF - Factory 4.1 RCT Aluminum Slip-On Exhaust w/Stainless Mid Pipe (Husqvarna)
Price range: $494.99 - $607.49
Up to 10% OFF
FMF - Powercore 2.1 Silencer (Yamaha)
Labor Day Deal
FMF - Powercore 2.1 Silencer (Yamaha)
Price range: $215.99 - $404.99
Up to 10% OFF
FMF - Factory Fatty Pipe (Husqvarna)
Labor Day Deal
FMF - Factory Fatty Pipe (Husqvarna)
Price range: $269.99 - $296.99
Up to 10% OFF
FMF - Q4 Hex Slip-On Muffler (Honda)
Labor Day Deal
FMF - Q4 Hex Slip-On Muffler (Honda)
Price range: $404.99 - $449.99
Up to 10% OFF
FMF - Powercore 2.1 Silencer (KTM)
Labor Day Deal
FMF - Powercore 2.1 Silencer (KTM)
Price range: $215.99 - $404.99
Up to 10% OFF
FMF - Turbinecore 2 Spark Arrestor (Kawasaki)
Labor Day Deal
FMF - Turbinecore 2 Spark Arrestor (Kawasaki)
. Final price: $197.99 . Original price: $219.99
10% OFF
FMF - Turbinecore 2 Spark Arrestor (KTM)
Labor Day Deal
FMF - Turbinecore 2 Spark Arrestor (KTM)
Price range: $197.99 - $206.99
Up to 10% OFF
GasGas - FMF Fatty Expansion Chamber
GasGas - FMF Fatty Expansion Chamber
. Final price: $299.99 . Original price:
FMF - Fatty Pipe (Husqvarna)
Labor Day Deal
FMF - Fatty Pipe (Husqvarna)
Price range: $269.99 - $296.99
Up to 10% OFF
FMF - Powercore 4 Hex Slip-On Muffler (Honda)
Labor Day Deal
FMF - Powercore 4 Hex Slip-On Muffler (Honda)
Price range: $359.99 - $404.99
Up to 10% OFF
FMF - Powercore 2.1 Shorty Silencer (Husqvarna)
Labor Day Deal
FMF - Powercore 2.1 Shorty Silencer (Husqvarna)
Price range: $179.99 - $404.99
Up to 10% OFF
FMF - Factory 4.1 RCT Complete System (Gas Gas)
Labor Day Deal
FMF - Factory 4.1 RCT Complete System (Gas Gas)
Price range: $944.99 - $1,196.99
Up to 10% OFF
FMF - Megabomb Stainless Header (Gas Gas)
Labor Day Deal
FMF - Megabomb Stainless Header (Gas Gas)
Price range: $337.49 - $472.49
Up to 10% OFF
You’ve viewed 48/170 products

FMF | High-Performance Exhaust Systems & Parts for 2-Stroke & 4-Stroke

FMF Racing is one of the most respected names in dirt bike and motocross exhaust performance, trusted by professional racers and weekend riders alike. Known for race-proven engineering, FMF exhaust systems are designed to improve power delivery, throttle response, and overall ride character across motocross, off-road, and trail applications. Whether you ride a 2-stroke or 4-stroke, FMF offers tuned solutions that balance performance gains with durability and sound control.

At BTO Sports, you can shop all FMF products, browse dedicated FMF exhaust systems, or find discounted options in the FMF exhaust sale. FMF exhausts are engineered to match specific riding styles, terrain types, and engine platforms so riders can dial in performance without guesswork.

FMF Exhaust Categories | Built for How You Ride

FMF offers a full lineup of performance exhaust components designed around engine type and riding demands. Popular performance categories include high-flow 2-stroke pipes that enhance powerband response, durable 2-stroke silencers for tuned sound and throttle feel, and race-inspired 4-stroke exhausts that improve torque, horsepower, and weight savings.

For riders chasing top-tier race performance, the FMF Factory 4.1 exhausts represent FMF’s flagship systems, combining advanced materials, precision tuning, and competition-level performance for motocross and off-road racing.

Accessories, ATV Systems & Lifestyle Gear

In addition to full exhaust systems, FMF offers a wide range of supporting components and gear. Riders can find replacement parts and tuning components in FMF exhaust accessories, performance-focused ATV exhaust systems for quad riders, and off-bike style options in FMF casual wear.

OEM-Specific FMF Exhaust Options

FMF designs exhaust systems specifically for popular OEM platforms to ensure proper fitment and optimized performance. Riders can shop bike-specific options such as GasGas FMF pipes, GasGas 2-stroke silencers, Husqvarna FMF pipes, and KTM PowerParts FMF 2-stroke silencers. These OEM-matched systems help riders unlock performance without compromising reliability or fit.

From motocross tracks to off-road trails, FMF exhaust systems deliver proven performance gains backed by decades of racing experience. Explore the categories above to find the right FMF setup for your dirt bike, riding style, and performance goals.