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 Muffler Sleeve - Aluminum 040650
FMF
$19.99Exhaust system performance depends on a properly functioning mid-pipe, and worn sleeves compromise both flow efficiency and structural integrity. The FMF Muffler Sleeve (040650) restores your exhaust system to factory specifications, eliminating leaks...18600580- SKU:
- 18600580
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- ALUMINUM
- STYLE:
- ROUND
- LENGTH IMPERIAL:
- 4'
- PRODUCT NAME:
- INSERT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- TYPE:
- MID PIPE INLET SLEEVE INSERT
$19.99 -
FMF Muffler Sleeve - Aluminum 040654
FMF
$19.99Worn exhaust sleeves compromise flow efficiency and can lead to costly mid-pipe replacements. The FMF Muffler Sleeve restores your exhaust system's structural integrity and thermal protection without requiring a full mid-pipe swap. If you're running an...18600584- SKU:
- 18600584
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- INSERT
- RIDING STYLE:
- OFF-ROAD
- LENGTH IMPERIAL:
- 4'
- RIDING STYLE:
- ATV
- TYPE:
- MID PIPE INLET SLEEVE INSERT
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- UTV
- STYLE:
- ROUND
$19.99 -
FMF Slip Flange - CRF250R '04-'09 040656
FMF
$29.99A degraded exhaust flange is a silent performance killer—it causes air leaks, reduces scavenging efficiency, and can allow unburned fuel to escape before combustion completes. The FMF Slip Flange restores the critical seal between your header and...18600586- SKU:
- 18600586
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- ATV
- TYPE:
- FLANGE KIT
- PRODUCT NAME:
- KIT
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- UNITS:
- KIT
$29.99Qty in Cart: 0Quantity:Price:$29.99Subtotal: -
FMF Exhaust O-Ring Kit 014815
FMF
$11.99Exhaust seals deteriorate with heat cycling and vibration, causing leaks that compromise performance and create unwanted noise. The FMF Exhaust O-Ring Kit 014815 provides OEM-quality replacement seals and springs to restore a tight, leak-free connection...18600818- SKU:
- 18600818
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- O-RING
- TYPE:
- EXHAUST
$11.99 -
FMF Exhaust O-Ring Kit 014814
FMF
$12.99Exhaust leaks compromise performance and create unwanted noise—this FMF O-ring and spring kit delivers a factory-fresh seal for your exhaust system. A properly sealed exhaust ensures optimal back-pressure management and prevents horsepower loss from air...18600700- SKU:
- 18600700
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- MATERIAL:
- RUBBER
- TYPE:
- EXHAUST
- PRODUCT NAME:
- O-RING
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$12.99Qty in Cart: 0Quantity:Price:$12.99Subtotal: -
FMF End Cap - Titanium 020522
FMF
$74.99If your Powercore 2:1 silencer's end cap is damaged, cracked, or worn, you're losing acoustic tuning and risking internal component exposure. This OEM FMF titanium replacement restores your exhaust system to factory specifications and maintains the...18601954- SKU:
- 18601954
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- END CAP
- UNITS:
- EACH
- TYPE:
- EXHAUST
$74.99Qty in Cart: 0Quantity:Price:$74.99Subtotal: -
FMF End Cap - Stainless Steel 020521
FMF
$59.99Your Powercore 2:1 silencer's end cap takes the brunt of heat cycling and exhaust scavenging—a worn or damaged cone compromises flow efficiency and allows heat to escape where it shouldn't. This genuine FMF stainless steel replacement restores optimal...18601957- SKU:
- 18601957
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- EXHAUST
- UNITS:
- EACH
- PRODUCT NAME:
- END CAP
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
$59.99 -
FMF Colorways Logo Kit - Blue 014849
FMF
$17.99Whether you're building a custom bike, refreshing your pit setup, or personalizing your gear collection, the FMF Colorways Logo Kit in Blue gives you authentic factory branding that matches your commitment to quality. FMF's reputation for engineering...18602112- SKU:
- 18602112
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BASE COLOR:
- BLUE
- BASE COLOR:
- YELLOW
- COLOR/FINISH:
- WHITE
- PRODUCT NAME:
- DECAL
- COLOR/FINISH:
- RED
- GRAPHIC:
- FMF LOGO
- STYLE:
- COLORWAYS 4.1
- TYPE:
- EXHAUST
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
- COLOR/FINISH:
- YELLOW
- RIDING STYLE:
- OFF-ROAD
$17.99 -
FMF End Cap - Stainless Steel - Powercore 4/Q4 040676
FMF
$49.99A worn or damaged end cap compromises your exhaust system's structural integrity and aerodynamic efficiency. This FMF stainless steel replacement restores full performance and durability to your Powercore 4 or Q4 silencer. Direct bolt-on installation...18601049- SKU:
- 18601049
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- CAP
- END CAP STYLE:
- SLASH-CUT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- TI POWERCORE 4
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- STYLE:
- ROUND
- TYPE:
- END CAP
$49.99 -
FMF 4.1 RCT Spark Arrestor Insert 040681
FMF
$39.99The FMF 4.1 RCT Spark Arrestor Insert keeps your exhaust system compliant with track and trail regulations while maintaining the performance characteristics of your Factory 4.1 silencer. This direct-fit insert eliminates spark ejection without...18601372- SKU:
- 18601372
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MODEL:
- FACTORY 4.1 RCT
- TYPE:
- SPARK ARRESTOR
- UNITS:
- EACH
- PRODUCT NAME:
- INSERT
- RIDING STYLE:
- OFF-ROAD
$39.99Qty in Cart: 0Quantity:Price:$39.99Subtotal: -
FMF PowerCore 4 HEX Muffler 043362
FMF
$399.99The FMF PowerCore 4 HEX Muffler delivers measurable gains in power and torque while maintaining the durability required for serious riding. Its Hi-Flo internal core geometry maximizes exhaust scavenging, reducing backpressure and unlocking performance...18211855- SKU:
- 18211855
- Availability:
- Ships Same Business Day
- Weight:
- 6.70 LBS
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- MUFFLER COLOR/FINISH:
- RAW
- MUFFLER MATERIAL:
- ALUMINUM
- PIPE MATERIAL:
- STAINLESS STEEL
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4 HEX
$399.99Qty in Cart: 0Quantity:Price:$399.99Subtotal: -
FMF Factory 4.1 RCT Muffler - Anodized Titanium 043365
FMF
$749.99If you're serious about extracting maximum power from your machine while minimizing rotational mass, the FMF Factory 4.1 RCT delivers measurable gains across the entire RPM band without compromise. The Resonance Chamber Technology™ design reduces...18211858- SKU:
- 18211858
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- PRODUCT NAME:
- MUFFLER
- TYPE:
- SLIP-ON
- END CAP MATERIAL:
- CARBON FIBER
- MUFFLER MATERIAL:
- TITANIUM
- UNITS:
- EACH
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- PIPE MATERIAL:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
$749.99 -
FMF Turbinecore 2.1 Muffler 025233
FMF
$269.99If you're running a high-revving off-road machine, exhaust flow directly impacts power delivery and throttle response. The FMF Turbinecore 2.1 Muffler delivers track-proven performance while maintaining U.S. Forest Service legal compliance—a rare...18211866- SKU:
- 18211866
- Availability:
- Ships Same Business Day
- Weight:
- 4.27 LBS
- MODEL:
- TURBINECORE 2.1
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- SILENCER
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- END CAP MATERIAL:
- STAINLESS STEEL
- END CAP STYLE:
- SLASH-CUT
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ROUND
$269.99Qty in Cart: 0Quantity:Price:$269.99Subtotal: -
FMF Powercore 2.1 Muffler - Titanium 025248
FMF
$449.99If you're running a 4-stroke on modern track setups, exhaust scavenging and power delivery across the RPM band directly impact your lap times and engine longevity. The FMF Powercore 2.1 Titanium delivers a smooth, predictable power curve while its...18211910- SKU:
- 18211910
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- END CAP MATERIAL:
- TITANIUM
- MODEL:
- POWERCORE 2.1
- MUFFLER MATERIAL:
- TITANIUM
- PRODUCT NAME:
- SILENCER
- UNITS:
- EACH
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- PIPE MATERIAL:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
$449.99 -
FMF Powercore 2 Silencer 025186
FMF
$199.99If you're running a 2-stroke engine, exhaust flow directly impacts power delivery and throttle response. The FMF Powercore 2 Silencer delivers a tuned expansion chamber design that maximizes mid-range torque while maintaining efficient scavenging across...18211745- SKU:
- 18211745
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- SILVER
- END CAP COLOR/FINISH:
- STAINLESS STEEL
- COLOR/FINISH:
- SILVER
- END CAP STYLE:
- CONICAL
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 2
- STYLE:
- ELLIPTICAL
- TYPE:
- SLIP-ON SILENCER
$199.99Qty in Cart: 0Quantity:Price:$199.99Subtotal: -
FMF Factory 4.1 RCT Muffler - Anodized Titanium 045596
FMF
$599.99If you're serious about maximizing power output while minimizing rotational mass, the FMF Factory 4.1 RCT delivers measurable gains across the entire RPM band without the bulk of conventional muffler designs. Its aerospace-grade titanium construction and...18211721- SKU:
- 18211721
- Availability:
- Ships Same Business Day
- Weight:
- 7.05 LBS
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- END CAP MATERIAL:
- TITANIUM
- MUFFLER MATERIAL:
- TITANIUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$599.99Qty in Cart: 0Quantity:Price:$599.99Subtotal: -
FMF Factory 4.1 RCT Muffler - Aluminum 042330
FMF
$599.99If you're serious about extracting maximum performance from your machine while reducing unsprung weight, the FMF Factory 4.1 RCT delivers across the entire RPM range without compromise. By repositioning the muffler closer to the engine, this system...18211726- SKU:
- 18211726
- Availability:
- Ships Same Business Day
- Weight:
- 7.70 LBS
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- RAW
- UNITS:
- EACH
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- MUFFLER
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
$599.99Qty in Cart: 0Quantity:Price:$599.99Subtotal: -
FMF Powercore 2 Silencer 025053
FMF
$199.99If you're running a 2-stroke and leaving performance on the table with a subpar silencer, the FMF Powercore 2 is the proven solution that thousands of racers and riders have trusted for decades. This silencer delivers the optimal balance of power gains...18211358- SKU:
- 18211358
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- SILVER
- END CAP COLOR/FINISH:
- STAINLESS STEEL
- TYPE:
- SLIP-ON SILENCER
- COLOR/FINISH:
- SILVER
- END CAP STYLE:
- CONICAL
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 2
- STYLE:
- ELLIPTICAL
$199.99Qty in Cart: 0Quantity:Price:$199.99Subtotal: -
FMF Powercore 2 Silencer 025102
FMF
$199.99The FMF Powercore 2 Silencer is the go-to choice for 2-stroke racers and trail riders who demand consistent performance across varied conditions. Its proven elliptical design and perforated core deliver optimal sound suppression without sacrificing power...18211452- SKU:
- 18211452
- Availability:
- Ships Same Business Day
- Weight:
- 2.14 LBS
- BASE COLOR:
- SILVER
- END CAP COLOR/FINISH:
- STAINLESS STEEL
- END CAP STYLE:
- CONICAL
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 2
- STYLE:
- ELLIPTICAL
- TYPE:
- SLIP-ON SILENCER
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
$199.99Qty in Cart: 0Quantity:Price:$199.99Subtotal: -
FMF PowerCore 4 HEX Muffler 042309
FMF
$399.99The FMF PowerCore 4 HEX Muffler delivers measurable gains in power and torque while maintaining the durability you need for consistent track or trail performance. Its advanced internal geometry and premium construction eliminate restrictive exhaust...18211521- SKU:
- 18211521
- Availability:
- Ships Same Business Day
- Weight:
- 6.57 LBS
- MUFFLER COLOR/FINISH:
- RAW
- MUFFLER MATERIAL:
- ALUMINUM
- MODEL:
- POWERCORE 4 HEX
- PIPE MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- END CAP MATERIAL:
- STAINLESS STEEL
$399.99
