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
-
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 Powercore 4 Exhaust 041534
FMF
$299.99The FMF Powercore 4 is engineered for 4-stroke engines where measurable power gains and reliable durability matter. Its computer-optimized design and dyno-tested performance ensure you're not guessing—you're upgrading with data-backed results. Whether...18201543- SKU:
- 18201543
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
- BASE COLOR:
- SILVER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- FEATURES:
- WITH SPARK ARRESTOR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
$299.99Qty in Cart: 0Quantity:Price:$299.99Subtotal: -
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 -
FMF Gnarly Pipe 025218
FMF
$299.99If you're running a 2-stroke in serious terrain, you know the power delivery can feel peaky and unpredictable when you need raw pulling power to claw out of ruts and rocky sections. The FMF Gnarly Pipe delivers the low-end torque and mid-range grunt that...18201790- SKU:
- 18201790
- Availability:
- Ships Same Business Day
- Weight:
- 9.30 LBS
- COLOR/FINISH:
- NICKEL-PLATED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- MODEL:
- GNARLY
$299.99 -
FMF Factory Fatty Pipe 025219
FMF
$299.99The FMF Factory Fatty Pipe delivers a broader, smoother power curve across the entire rev range—giving you more usable low-end torque, stronger mid-range response, and extended over-rev capability. Hand-crafted with the same precision as factory racing...18201791- SKU:
- 18201791
- Availability:
- Ships Same Business Day
- Weight:
- 5.25 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MODEL:
- FACTORY FATTY
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99 -
FMF Fatty Pipe 025221
FMF
$299.99The FMF Fatty Pipe 025221 is computer-designed and dyno-tested to extract power exactly where your machine needs it most. Built with 19-gauge steel and finished in durable nickel plating, this pipe combines structural integrity with proven performance...18201792- SKU:
- 18201792
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- COLOR/FINISH:
- NICKEL-PLATED
- MODEL:
- GOLD SERIES FATTY
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- PRODUCT NAME:
- PIPE
- UNITS:
- EACH
$299.99 -
FMF Factory Fatty Big Bore Exhaust 025224
FMF
$299.99The FMF Factory Fatty Big Bore Exhaust is engineered for riders who demand measurable gains in power delivery and throttle response without sacrificing durability. Built using the same construction methods trusted by professional racers, this exhaust...18201794- SKU:
- 18201794
- Availability:
- Ships Same Business Day
- Weight:
- 4.01 LBS
- PRODUCT NAME:
- PIPE
- MODEL:
- BIG BORE
- MODEL:
- FACTORY FATTY
- TYPE:
- EXHAUST
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Factory Fatty Pipe - 65SX/TC65 025198
FMF
$289.99If you're riding a 65SX or TC65, the Factory Fatty Pipe delivers the kind of power curve refinement that separates competitive riders from the rest. This hand-crafted exhaust broadens your power delivery across the entire band—more low-end grunt, more...18201693- SKU:
- 18201693
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
- MODEL:
- FACTORY FATTY
- TYPE:
- EXHAUST
- PRODUCT NAME:
- PIPE
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$289.99 -
FMF Fatty Pipe 025197
FMF
$289.99The FMF Fatty Pipe 025197 delivers measurable horsepower gains by targeting the RPM range where your machine needs it most. Computer-designed and dyno-tested, this exhaust component removes restrictive back-pressure while maintaining optimal scavenging...18201694- SKU:
- 18201694
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 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 Gnarly Pipe 025203
FMF
$299.99If you're running a 2-stroke off-road machine and tired of sacrificing low-end torque for top-end screams, the FMF Gnarly Pipe delivers the tractor-like grunt you need to power through technical terrain. Built from heavy-duty 18-gauge steel, this pipe is...18201711- SKU:
- 18201711
- Availability:
- Ships Same Business Day
- Weight:
- 7.20 LBS
- MODEL:
- GNARLY
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- COLOR/FINISH:
- NICKEL-PLATED
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Factory Fatty Pipe 025204
FMF
$299.99The FMF Factory Fatty Pipe delivers measurable power gains across the entire RPM range—from low-end grunt to high-RPM over-rev—without sacrificing the smooth, linear power delivery that professional and recreational riders demand. Built using the same...18201714- SKU:
- 18201714
- Availability:
- Ships Same Business Day
- Weight:
- 6.90 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
- MODEL:
- FACTORY FATTY
$299.99Qty in Cart: 0Quantity:Price:$299.99Subtotal: -
FMF Factory Fatty Rev Pipe 022064
FMF
$299.99If you're hunting for mid-to-top-end power delivery, the FMF Factory Fatty Rev Pipe is engineered to extend your power band and reduce shift frequency—critical advantages in deep berms and sand riding where sustained acceleration matters. Built with FMF...18201715- SKU:
- 18201715
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- MODEL:
- FACTORY FATTY REV
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99
