Dirt Bike Exhaust
Dirt Bike Exhaust Systems at JJ Motorsports
Unlock your dirt bike's potential with high-performance exhaust systems from JJ Motorsports. From slip-on mufflers to full exhaust kits, these components boost horsepower, reduce weight, and deliver aggressive sound for the track or trail. Designed for durability and easy installation, our exhausts ensure better throttle response and emissions compliance while enhancing your ride's style.
Shop trusted brands like Pro Circuit for competition pipes and FMF for titanium systems. Explore related categories such as Dirt Bike Air and Fuel for intake pairing or Dirt Bike Engine for power upgrades.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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FMF Factory Fatty Pipe 025133
FMF
$299.99If you're looking to unlock genuine power gains across your entire power band without compromise, the FMF Factory Fatty Pipe delivers the low-end response, mid-range punch, and top-end over-rev that serious riders demand. Built using the same handcrafted...18201114- SKU:
- 18201114
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
- PRODUCT NAME:
- PIPE
- MODEL:
- FACTORY FATTY
- TYPE:
- EXHAUST
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Gnarly Pipe 025143
FMF
$299.99If you're running a 2-stroke in demanding off-road terrain, you need a pipe engineered for real-world punishment—not just peak RPM numbers. The FMF Gnarly Pipe delivers 4-stroke-level torque and bottom-end grunt across your entire powerband, giving you...18201115- SKU:
- 18201115
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
- PRODUCT NAME:
- PIPE
- MODEL:
- GNARLY
- UNITS:
- EACH
- COLOR/FINISH:
- NICKEL-PLATED
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Fatty Pipe 025088
FMF
$299.99The FMF Fatty Pipe 025088 is engineered to unlock power exactly where your engine delivers it most—through dyno-validated design that eliminates guesswork. Built tough with precision construction, this exhaust component combines durability with...18200494- SKU:
- 18200494
- Availability:
- Ships Same Business Day
- Weight:
- 3.05 LBS
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- HEAD PIPE
- COLOR/FINISH:
- NICKEL-PLATED
- MODEL:
- GOLD SERIES FATTY
- UNITS:
- KIT
$299.99 -
FMF Factory Fatty Pipe 025090
FMF
$299.99If you're looking to unlock measurable power gains across your entire powerband without compromise, the FMF Factory Fatty Pipe delivers the performance characteristics once reserved for factory racing teams. Hand-crafted with the same attention to detail...18200496- SKU:
- 18200496
- Availability:
- Ships Same Business Day
- Weight:
- 3.06 LBS
- TYPE:
- EXHAUST
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- MATERIAL:
- STEEL
- MODEL:
- FACTORY FATTY
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Powercore 4 Exhaust 040011
FMF
$299.99The FMF Powercore 4 Exhaust is engineered to maximize exhaust scavenging on 4-stroke engines, translating directly into measurable horsepower and torque gains across the entire RPM band. By reducing backpressure through high-flow design and computer...18201317- SKU:
- 18201317
- Availability:
- Ships Same Business Day
- Weight:
- 3.56 LBS
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
- BASE COLOR:
- SILVER
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- FEATURES:
- WITH SPARK ARRESTOR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
$299.99 -
FMF Fatty Pipe 024023
FMF
$289.99The FMF Fatty Pipe 024023 is computer-designed and dyno-tested to extract maximum power exactly where your machine needs it most. By optimizing exhaust flow through precision engineering, this pipe delivers measurable performance gains without...18201320- SKU:
- 18201320
- Availability:
- Ships Same Business Day
- Weight:
- 2.63 LBS
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MODEL:
- GOLD SERIES FATTY
- COLOR/FINISH:
- NICKEL-PLATED
- MATERIAL:
- STEEL
- PRODUCT NAME:
- HEAD PIPE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$289.99 -
FMF Powercore 4 Exhaust 040072
FMF
$279.99The FMF Powercore 4 exhaust system is engineered to extract measurable performance gains from your 4-stroke engine by optimizing exhaust gas flow and reducing backpressure. Computer-designed and dyno-tested across multiple platforms, this system delivers...18201341- SKU:
- 18201341
- Availability:
- Ships Same Business Day
- Weight:
- 4.10 LBS
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- FEATURES:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
$279.99 -
FMF Gnarly Pipe 025152
FMF
$299.99If you're running a 2-stroke in brutal terrain and need the torque response of a 4-stroke, the FMF Gnarly Pipe delivers the bottom-end grunt that separates finishers from quitters. Built from 18-gauge steel, this pipe is engineered to survive the...18201376- SKU:
- 18201376
- Availability:
- Ships Same Business Day
- Weight:
- 7.52 LBS
- MODEL:
- GNARLY
- PRODUCT NAME:
- PIPE
- UNITS:
- EACH
- COLOR/FINISH:
- NICKEL-PLATED
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Factory Fatty Pipe 025101
FMF
$289.99The FMF Factory Fatty Pipe delivers a broader, smoother power curve across your entire RPM range—exactly what factory racing teams engineered decades ago. By reducing restriction and optimizing flow transitions, you'll gain measurable low-end torque,...18201385- SKU:
- 18201385
- Availability:
- Ships Same Business Day
- Weight:
- 2.34 LBS
- TYPE:
- EXHAUST
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- MATERIAL:
- STEEL
- MODEL:
- FACTORY FATTY
- RIDING STYLE:
- OFF-ROAD
$289.99 -
FMF Fatty Pipe 025150
FMF
$289.99The FMF Fatty Pipe 025150 delivers measurable horsepower gains by optimizing exhaust scavenging at the RPM ranges where your machine operates hardest. Computer-designed and dyno-tested, this pipe eliminates guesswork and puts power exactly where you need...18201386- SKU:
- 18201386
- Availability:
- Ships Same Business Day
- Weight:
- 2.09 LBS
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STEEL
- COLOR/FINISH:
- NICKEL-PLATED
- MODEL:
- GOLD SERIES FATTY
- PRODUCT NAME:
- HEAD PIPE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$289.99 -
FMF Fatty Pipe 025151
FMF
$289.99The FMF Fatty Pipe 025151 is computer-designed and dyno-tested to deliver measurable power gains exactly where your machine needs them most. Built with 19-gauge steel and a nickel-plated finish, this pipe combines durability with reliable performance...18201387- SKU:
- 18201387
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STEEL
- COLOR/FINISH:
- NICKEL-PLATED
- MODEL:
- GOLD SERIES FATTY
- PRODUCT NAME:
- HEAD PIPE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$289.99 -
FMF Powercore 4 Exhaust 041501
FMF
$279.99If you're running a 4-stroke engine and leaving performance on the table, your exhaust system is likely the culprit. The FMF Powercore 4 delivers measurable gains in power and throttle response through optimized gas scavenging and reduced...18201402- SKU:
- 18201402
- Availability:
- Ships Same Business Day
- Weight:
- 3.37 LBS
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- FEATURES:
- STANDARD
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- ELLIPTICAL
- BASE COLOR:
- SILVER
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
$279.99 -
FMF Powercore 4 Exhaust 041502
FMF
$299.99The FMF Powercore 4 Exhaust is engineered for 4-stroke engines that demand measurable gains in airflow and horsepower. Its computer-designed architecture and dyno-tested construction deliver real performance improvements—not marketing promises—while the...18201403- SKU:
- 18201403
- Availability:
- Ships Same Business Day
- Weight:
- 3.99 LBS
- BASE COLOR:
- SILVER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- FEATURES:
- WITH SPARK ARRESTOR
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
$299.99 -
FMF Gnarly Pipe 025168
FMF
$299.99If you're running a 2-stroke in gnarly terrain, you know the difference between a pipe that merely works and one that delivers real torque when you need it most. The FMF Gnarly Pipe (025168) is engineered specifically to unlock lower-RPM power and...18201531- SKU:
- 18201531
- Availability:
- Ships Same Business Day
- Weight:
- 6.99 LBS
- MODEL:
- GNARLY
- PRODUCT NAME:
- PIPE
- COLOR/FINISH:
- NICKEL-PLATED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- MATERIAL:
- STEEL
$299.99 -
FMF Fatty Pipe 022060
FMF
$299.99The FMF Fatty Pipe 022060 delivers measurable power gains by optimizing exhaust flow characteristics specific to your machine's needs. Computer-designed and dyno-tested engineering eliminates guesswork, while the precision Tru-Flo stamping process...18201537- SKU:
- 18201537
- Availability:
- Ships Same Business Day
- Weight:
- 4.63 LBS
- COLOR/FINISH:
- NICKEL-PLATED
- PRODUCT NAME:
- HEAD PIPE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- GOLD SERIES FATTY
- UNITS:
- KIT
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
$299.99 -
FMF Factory Fatty Pipe - KX85/100 022062
FMF
$299.99If you're running a KX85 or KX100, the FMF Factory Fatty Pipe delivers the kind of power band refinement that separates competitive riders from the rest. By smoothing out the entire power curve—not just chasing peak numbers—you'll gain usable low-end...18201538- SKU:
- 18201538
- Availability:
- Ships Same Business Day
- Weight:
- 4.75 LBS
- MATERIAL:
- STEEL
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
- MODEL:
- FACTORY FATTY
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Powercore 4 Exhaust 041533
FMF
$279.99If you're running a 4-stroke and leaving power on the table with a restrictive exhaust, the FMF Powercore 4 is engineered to unlock measurable gains through optimized gas scavenging and flow dynamics. Every component—from the hi-flo end cap to the...18201539- SKU:
- 18201539
- Availability:
- Ships Same Business Day
- Weight:
- 3.42 LBS
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- FEATURES:
- STANDARD
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
$279.99 -
FMF Fatty Pipe 021058
FMF
$379.99The FMF Fatty Pipe 021058 delivers measurable power gains by optimizing exhaust scavenging at the rpm ranges where your engine needs it most. Computer-designed and dyno-tested engineering ensures this pipe performs consistently across varying conditions,...18201485- SKU:
- 18201485
- Availability:
- Ships Same Business Day
- Weight:
- 8.01 LBS
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MODEL:
- GOLD SERIES FATTY
- MATERIAL:
- STEEL
- PRODUCT NAME:
- HEAD PIPE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COLOR/FINISH:
- NICKEL-PLATED
$379.99 -
FMF Gnarly Pipe 025156
FMF
$299.99If you're running a 2-stroke in terrain that demands serious low-end grunt, the FMF Gnarly Pipe delivers the torque response you need without compromising durability. Built from heavy-gauge steel, this pipe is engineered to handle the punishment of...18201486- SKU:
- 18201486
- Availability:
- Ships Same Business Day
- Weight:
- 7.09 LBS
- MODEL:
- GNARLY
- PRODUCT NAME:
- PIPE
- COLOR/FINISH:
- NICKEL-PLATED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- MATERIAL:
- STEEL
$299.99 -
FMF Factory Fatty Pipe - '13-'19 RR250/300 025157
FMF
$299.99If you're running a '13-'19 RR250/300 and want measurable power gains across the entire rev range, the FMF Factory Fatty Pipe delivers the low-end grunt, mid-range response, and top-end extension you need without compromising rideability. This isn't a...18201487- SKU:
- 18201487
- Availability:
- Ships Same Business Day
- Weight:
- 6.68 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MODEL:
- FACTORY FATTY
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99
