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 PowerBomb Header 041133
FMF
$249.99The FMF PowerBomb Header 041133 delivers measurable horsepower gains through precision engineering that optimizes exhaust scavenging from the moment combustion gases leave your engine. Its patented "Bomb" module acts as an intelligent expansion chamber,...18220046- SKU:
- 18220046
- Availability:
- Ships Same Business Day
- Weight:
- 3.65 LBS
- COLOR/FINISH:
- STAINLESS STEEL
- PRODUCT NAME:
- HEADER
- TYPE:
- HEAD PIPE
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERBOMB
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$249.99 -
FMF MegaBomb Header 041426
FMF
$374.99The FMF MegaBomb Header 041426 delivers the power characteristics you need without the trade-offs. This titanium construction header produces aggressive low-to-mid-range torque while maintaining peak top-end power—eliminating the need to choose between...18220290- SKU:
- 18220290
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- MEGABOMB
- PRODUCT NAME:
- HEADER
- RIDING STYLE:
- OFF-ROAD
$374.99Qty in Cart: 0Quantity:Price:$374.99Subtotal: -
FMF PowerBomb Header 042274
FMF
$249.99If you're looking to unlock measurable performance gains without sacrificing streetability, the FMF PowerBomb Header 042274 delivers a straightforward solution: up to 10% horsepower increase through precision exhaust tuning. The patented "Bomb" module at...18220360- SKU:
- 18220360
- Availability:
- Ships Same Business Day
- Weight:
- 2.81 LBS
- COLOR/FINISH:
- STAINLESS STEEL
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- HEADER
- TYPE:
- HEAD PIPE
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- POWERBOMB
- UNITS:
- EACH
$249.99Qty in Cart: 0Quantity:Price:$249.99Subtotal: -
FMF Factory Fatty Pipe - KTM 250/300 025072
FMF
$299.99If you're running a KTM 250 or 300, the FMF Factory Fatty Pipe delivers the kind of broad, responsive power curve that separates competitive riders from the rest. Factory Teams have relied on cone pipe designs for decades because they work—and this...18200083- SKU:
- 18200083
- Availability:
- Ships Same Business Day
- Weight:
- 5.35 LBS
- PRODUCT NAME:
- PIPE
- MODEL:
- FACTORY FATTY
- TYPE:
- EXHAUST
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99Qty in Cart: 0Quantity:Price:$299.99Subtotal: -
FMF Gnarly Pipe 025095
FMF
$299.99If you're running a 2-stroke in demanding off-road conditions, you need a pipe engineered for real-world abuse—not just peak RPM power. The FMF Gnarly Pipe delivers the low-to-mid range torque that separates smooth terrain from technical terrain, giving...18200755- SKU:
- 18200755
- Availability:
- Ships Same Business Day
- Weight:
- 8.05 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- NICKEL-PLATED
- PRODUCT NAME:
- PIPE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- MODEL:
- GNARLY
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Factory Fatty Pipe - '09-'15 65SX 025103
FMF
$289.99If you're running a '09-'15 65SX and want measurable power across the entire RPM range, the FMF Factory Fatty Pipe delivers the goods. This hand-crafted exhaust pipe broadens your power curve from low-end grunt through over-rev, giving you the responsive...18201128- SKU:
- 18201128
- Availability:
- Ships Same Business Day
- Weight:
- 4.25 LBS
- MATERIAL:
- STEEL
- TYPE:
- EXHAUST
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- MODEL:
- FACTORY FATTY
- RIDING STYLE:
- OFF-ROAD
$289.99Qty in Cart: 0Quantity:Price:$289.99Subtotal: -
FMF Gnarly Pipe 025148
FMF
$299.99If you're running a 2-stroke in demanding off-road conditions and need the low-end grunt of a 4-stroke, the FMF Gnarly Pipe delivers exactly that—aggressive torque and mid-range power that pulls you through the toughest terrain. Built from 18-gauge...18201284- SKU:
- 18201284
- Availability:
- Ships Same Business Day
- Weight:
- 10.75 LBS
- PRODUCT NAME:
- PIPE
- MODEL:
- GNARLY
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- NICKEL-PLATED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$299.99Qty in Cart: 0Quantity:Price:$299.99Subtotal: -
FMF Powercore 4 Exhaust 044156
FMF
$279.99The FMF Powercore 4 exhaust system delivers measurable horsepower and torque gains through computer-optimized design and dyno-testing, engineered specifically for 4-stroke engines where every cubic centimeter of flow matters. The hi-flo end cap and round...18201321- SKU:
- 18201321
- Availability:
- Ships Same Business Day
- Weight:
- 3.22 LBS
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- FEATURES:
- STANDARD
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
$279.99Qty in Cart: 0Quantity:Price:$279.99Subtotal: -
FMF Powercore 4 Exhaust 041071
FMF
$299.99If you're running a 4-stroke engine and leaving performance on the table with a restrictive stock exhaust, the FMF Powercore 4 is the upgrade that delivers measurable power gains and a refined exhaust note. This system has been computer-designed and...18201342- SKU:
- 18201342
- Availability:
- Ships Same Business Day
- Weight:
- 2.81 LBS
- BASE COLOR:
- SILVER
- MODEL:
- BIG BORE
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- END CAP STYLE:
- EURO
- FEATURES:
- STANDARD
- MATERIAL:
- ALUMINUM
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
$299.99Qty in Cart: 0Quantity:Price:$299.99Subtotal: -
FMF Fatty Pipe 025202
FMF
$299.99The FMF Fatty Pipe 025202 delivers measurable power gains by optimizing exhaust flow where your machine needs it most. Computer design and dyno testing ensure this pipe maximizes performance without compromise, while the proprietary Tru-Flo stamping...18201713- SKU:
- 18201713
- Availability:
- Ships Same Business Day
- Weight:
- 6.80 LBS
- COLOR/FINISH:
- NICKEL-PLATED
- PRODUCT NAME:
- HEAD PIPE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- CHROME
- MODEL:
- GOLD SERIES FATTY
- UNITS:
- KIT
$299.99 -
FMF 4.1 RCT Exhaust with MegaBomb - Aluminum 045634
FMF
$1,049.99If you're serious about extracting maximum power from your machine while cutting unnecessary weight, the FMF 4.1 RCT Exhaust with MegaBomb is engineered to deliver measurable gains across the entire RPM band. By centralizing mass closer to the motor...18201871- SKU:
- 18201871
- Availability:
- Ships Same Business Day
- Weight:
- 10.40 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- RAW
- MUFFLER MATERIAL:
- ALUMINUM
- PIPE MATERIAL:
- STAINLESS STEEL
- TYPE:
- FULL SYSTEM
- PRODUCT NAME:
- EXHAUST SYSTEM
$1,049.99Qty in Cart: 0Quantity:Price:$1,049.99Subtotal: -
FMF 4.1 RCT Exhaust with MegaBomb - Anodized Titanium 045637
FMF
$1,329.99If you're running a high-performance off-road machine, exhaust flow is where real gains happen—and the FMF 4.1 RCT delivers measurable power across the entire RPM range while cutting significant weight. The Factory 4.1 RCT's centralized design reduces...18201874- SKU:
- 18201874
- Availability:
- Ships Same Business Day
- Weight:
- 9.00 LBS
- PIPE MATERIAL:
- TITANIUM
- PRODUCT NAME:
- EXHAUST SYSTEM
- MUFFLER MATERIAL:
- TITANIUM
- END CAP MATERIAL:
- CARBON FIBER
- UNITS:
- EACH
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
$1,329.99Qty in Cart: 0Quantity:Price:$1,329.99Subtotal: -
FMF 4.1 RCT Exhaust with MegaBomb - Aluminum 045638
FMF
$1,049.99If you're serious about maximizing your bike's power delivery across the entire RPM range while shedding unnecessary weight, the FMF 4.1 RCT Exhaust with MegaBomb is engineered to deliver measurable gains without compromise. The Factory Forward...18201875- SKU:
- 18201875
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- PIPE MATERIAL:
- STAINLESS STEEL
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- RAW
- RIDING STYLE:
- OFF-ROAD
- END CAP MATERIAL:
- CARBON FIBER
- MUFFLER MATERIAL:
- ALUMINUM
- UNITS:
- EACH
$1,049.99 -
FMF 4.1 RCT Exhaust with MegaBomb - Anodized Titanium 045639
FMF
$1,329.99If you're serious about extracting maximum power from your machine while cutting unnecessary weight, the FMF 4.1 RCT with MegaBomb is engineered to deliver. By centralizing mass closer to the engine and utilizing aerospace-grade materials, this exhaust...18201876- SKU:
- 18201876
- Availability:
- Ships Same Business Day
- Weight:
- 9.00 LBS
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- MUFFLER MATERIAL:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- END CAP MATERIAL:
- CARBON FIBER
- UNITS:
- EACH
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- PIPE MATERIAL:
- TITANIUM
$1,329.99Qty in Cart: 0Quantity:Price:$1,329.99Subtotal: -
FMF Fatty Pipe 024068
FMF
$289.99The FMF Fatty Pipe 024068 is engineered to deliver measurable power gains by optimizing exhaust flow at the RPM range where your machine operates hardest. Computer-designed and dyno-tested, this pipe ensures you're extracting every available horsepower...18201827- SKU:
- 18201827
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 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
$289.99 -
FMF Gnarly Pipe 021053
FMF
$299.99If you're running a 2-stroke and want the low-end grunt of a 4-stroke, the FMF Gnarly Pipe delivers exactly that—substantial torque and bottom-to-mid-range pull where it matters most in off-road terrain. Built from heavy-duty 18-gauge steel, this pipe is...18200215- SKU:
- 18200215
- Availability:
- Ships Same Business Day
- Weight:
- 7.80 LBS
- MODEL:
- GNARLY
- COLOR/FINISH:
- NICKEL-PLATED
- PRODUCT NAME:
- PIPE
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Fatty Pipe 025092
FMF
$299.99The FMF Fatty Pipe 025092 delivers measurable power gains by optimizing exhaust flow at the rpm ranges where your engine needs it most. Computer modeling and dyno testing ensure this isn't guesswork—every curve and diameter is engineered for real...18200591- SKU:
- 18200591
- Availability:
- Ships Same Business Day
- Weight:
- 5.75 LBS
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- COLOR/FINISH:
- NICKEL-PLATED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- MODEL:
- GOLD SERIES FATTY
- PRODUCT NAME:
- HEAD PIPE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$299.99Qty in Cart: 0Quantity:Price:$299.99Subtotal: -
FMF End Cap - Stainless Steel - Slash Cut - PC4/Q4 040635
FMF
$34.99If your 4-stroke exhaust system is showing signs of wear or you've damaged your end cap during aggressive riding, a quality replacement is essential to maintain backpressure and exhaust flow dynamics. The FMF stainless steel end cap restores your...18600501- SKU:
- 18600501
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- END CAP
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- REPLACEMENT
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4
- UNITS:
- EACH
- RIDING STYLE:
- UTV
- END CAP STYLE:
- SLASH-CUT
- MODEL:
- Q4
- RIDING STYLE:
- ATV
$34.99 -
FMF End Cap - Titanium - Factory 4.1 040637
FMF
$49.99If you're running an FMF Factory 4.1 exhaust system, the end cap is your first line of defense against heat loss and exhaust gas escape. A damaged or worn end cap compromises backpressure tuning and reduces system efficiency—this titanium replacement...18600503- SKU:
- 18600503
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- END CAP
- STYLE:
- REPLACEMENT
- MODEL:
- FACTORY 4.1
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- END CAP STYLE:
- CONICAL
- MATERIAL:
- TITANIUM
$49.99Qty in Cart: 0Quantity:Price:$49.99Subtotal: -
FMF RCT End Cap - Titanium 040642
FMF
$59.99A quality exhaust end cap protects your muffler canister from corrosion, road debris, and premature deterioration while maintaining the clean aesthetic of your system. The FMF RCT titanium construction delivers superior heat resistance and durability...18600562- SKU:
- 18600562
- Availability:
- Ships Same Business Day
- Weight:
- 0.64 LBS
- OUTSIDE DIAMETER IMPERIAL:
- 4'
- TYPE:
- EXHAUST
- END CAP STYLE:
- EURO
- PRODUCT NAME:
- END CAP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MODEL:
- FACTORY 4.1 RCT
- MATERIAL:
- TITANIUM
$59.99
