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
-
On Sale
FMF Factory 4.1 RCT Muffler - Anodized Titanium 042267
FMF
MSRP: $749.99Now: $637.00Was: $749.99The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally, In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...18211227- SKU:
- 18211227
- Availability:
- Ships Same Business Day
- Weight:
- 7.89 LBS
- PIPE MATERIAL:
- TITANIUM
- UNITS:
- EACH
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- MUFFLER MATERIAL:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- PRODUCT NAME:
- MUFFLER
MSRP: $749.99Now: $637.00Was: $749.99Qty in Cart: 0Quantity:Price:MSRP: $749.99Now: $637.00Was: $749.99Subtotal: -
On Sale
FMF Factory 4.1 RCT Muffler - Anodized Titanium 045570
FMF
MSRP: $649.99Now: $552.00Was: $649.99The Factory 4.1 RCT incorporates FMF's Resonance Chamber Technology™ both internally and externally, In addition, FMF achieves a shorter overall length that is less susceptible to crash damage and complementary to their Factory Forward Engineering -...18211644- SKU:
- 18211644
- Availability:
- Ships Same Business Day
- Weight:
- 6.70 LBS
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- PIPE MATERIAL:
- TITANIUM
- END CAP MATERIAL:
- CARBON FIBER
- MUFFLER MATERIAL:
- TITANIUM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
MSRP: $649.99Now: $552.00Was: $649.99Qty in Cart: 0Quantity:Price:MSRP: $649.99Now: $552.00Was: $649.99Subtotal: -
On Sale
FMF Powercore 4 Muffler 044312
FMF
MSRP: $359.99Now: $306.00Was: $359.99Developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding, Aluminum construction and stainless steel Hi-Flo end caps make for the...18211027- SKU:
- 18211027
- Availability:
- Ships Same Business Day
- Weight:
- 5.15 LBS
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- STYLE:
- OVAL
- END CAP MATERIAL:
- STAINLESS STEEL
- END CAP STYLE:
- CONICAL
- MODEL:
- POWERCORE 4
- BASE COLOR:
- SILVER
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- MUFFLER
- UNITS:
- EACH
- TYPE:
- SLIP-ON
MSRP: $359.99Now: $306.00Was: $359.99 -
On Sale
FMF Powercore 4 Muffler 044141
FMF
MSRP: $359.99Now: $306.00Was: $359.99Developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding, Aluminum construction and stainless steel Hi-Flo end caps make for the...18210363- SKU:
- 18210363
- Availability:
- Ships Same Business Day
- Weight:
- 6.05 LBS
- BASE COLOR:
- SILVER
- END CAP MATERIAL:
- STAINLESS STEEL
- END CAP STYLE:
- CONICAL
- UNITS:
- EACH
- MODEL:
- POWERCORE 4
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- OVAL
- TYPE:
- SLIP-ON
MSRP: $359.99Now: $306.00Was: $359.99 -
On Sale
FMF Factory 4.1 Muffler - Anodized Titanium 041291
FMF
MSRP: $499.99Now: $425.00Was: $499.99Superior power and performance - horsepower improved throughout the rpm range, Factory Forward Engineering centralizes mass, improves handling, Customize with performance tuning inserts and spark arrestor module18210547- SKU:
- 18210547
- Availability:
- Ships Same Business Day
- Weight:
- 5.69 LBS
- STYLE:
- OVAL
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- END CAP STYLE:
- EURO
- MODEL:
- FACTORY 4.1
- MUFFLER MATERIAL:
- TITANIUM
- UNITS:
- EACH
- END CAP MATERIAL:
- STAINLESS STEEL
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- PIPE MATERIAL:
- TITANIUM
MSRP: $499.99Now: $425.00Was: $499.99Qty in Cart: 0Quantity:Price:MSRP: $499.99Now: $425.00Was: $499.99Subtotal: -
On Sale
FMF Factory 4.1 Muffler - Anodized Titanium 044235
FMF
MSRP: $499.99Now: $425.00Was: $499.99Superior power and performance - horsepower improved throughout the rpm range, Factory Forward Engineering centralizes mass, improves handling, Customize with performance tuning inserts and spark arrestor module18210584- SKU:
- 18210584
- Availability:
- Ships Same Business Day
- Weight:
- 6.25 LBS
- END CAP STYLE:
- EURO
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- MUFFLER MATERIAL:
- TITANIUM
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- FACTORY 4.1
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- STYLE:
- OVAL
MSRP: $499.99Now: $425.00Was: $499.99Qty in Cart: 0Quantity:Price:MSRP: $499.99Now: $425.00Was: $499.99Subtotal: -
On Sale
FMF Q4 Muffler 041249
FMF
MSRP: $449.99Now: $382.00Was: $449.99The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound, Less mass to enhance power-to-weight ratio, Quiet power with minimal sacrifice for performance, Developed over years of championship off-road racing,...18210653- SKU:
- 18210653
- Availability:
- Ships Same Business Day
- Weight:
- 7.15 LBS
- END CAP STYLE:
- EURO
- MUFFLER COLOR/FINISH:
- RAW
- MUFFLER MATERIAL:
- ALUMINUM
- PIPE MATERIAL:
- STAINLESS STEEL
- BASE COLOR:
- SILVER
- END CAP MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- STYLE:
- OVAL
- TYPE:
- SLIP-ON
- MODEL:
- Q4
- PRODUCT NAME:
- MUFFLER
MSRP: $449.99Now: $382.00Was: $449.99Qty in Cart: 0Quantity:Price:MSRP: $449.99Now: $382.00Was: $449.99Subtotal: -
On Sale
FMF Powercore 4 Muffler 041275
FMF
MSRP: $399.99Now: $340.00Was: $399.99Developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding, Aluminum construction and stainless steel Hi-Flo end caps make for the...18210664- SKU:
- 18210664
- Availability:
- Ships Same Business Day
- Weight:
- 6.31 LBS
- BASE COLOR:
- SILVER
- END CAP MATERIAL:
- STAINLESS STEEL
- END CAP STYLE:
- CONICAL
- UNITS:
- EACH
- MODEL:
- POWERCORE 4
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- OVAL
- TYPE:
- SLIP-ON
MSRP: $399.99Now: $340.00Was: $399.99 -
On Sale
FMF Powercore 4 Muffler 041276
FMF
MSRP: $399.99Now: $340.00Was: $399.99Developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding, Aluminum construction and stainless steel Hi-Flo end caps make for the...18210665- SKU:
- 18210665
- Availability:
- Ships Same Business Day
- Weight:
- 14.00 LBS
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- MODEL:
- POWERCORE 4
- MUFFLER MATERIAL:
- ALUMINUM
- STYLE:
- OVAL
- END CAP STYLE:
- CONICAL
- UNITS:
- EACH
- BASE COLOR:
- SILVER
- END CAP MATERIAL:
- STAINLESS STEEL
MSRP: $399.99Now: $340.00Was: $399.99 -
On Sale
FMF Powercore 4 Muffler 042122
FMF
MSRP: $399.99Now: $340.00Was: $399.99Developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding, Aluminum construction and stainless steel Hi-Flo end caps make for the...18210671- SKU:
- 18210671
- Availability:
- Ships Same Business Day
- Weight:
- 6.55 LBS
- MODEL:
- POWERCORE 4
- MUFFLER MATERIAL:
- ALUMINUM
- STYLE:
- OVAL
- PRODUCT NAME:
- MUFFLER
- TYPE:
- SLIP-ON
- BASE COLOR:
- SILVER
- END CAP MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- END CAP STYLE:
- CONICAL
- UNITS:
- EACH
MSRP: $399.99Now: $340.00Was: $399.99 -
On Sale
FMF Powercore 4 Muffler 045135
FMF
MSRP: $399.99Now: $340.00Was: $399.99Developed to increase the horsepower and torque throughout the entire power curve producing a noticeable power increase that is usable and compatible with every style of riding, Aluminum construction and stainless steel Hi-Flo end caps make for the...18210689- SKU:
- 18210689
- Availability:
- Ships Same Business Day
- Weight:
- 5.87 LBS
- MODEL:
- POWERCORE 4
- MUFFLER MATERIAL:
- ALUMINUM
- STYLE:
- OVAL
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- END CAP STYLE:
- CONICAL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- BASE COLOR:
- SILVER
- END CAP MATERIAL:
- STAINLESS STEEL
MSRP: $399.99Now: $340.00Was: $399.99 -
On Sale
FMF Q4 Muffler 041332
FMF
MSRP: $379.99Now: $323.00Was: $379.99The Q series features advanced engineering to precisely locate baffles and chambers to absorb sound, Less mass to enhance power-to-weight ratio, Quiet power with minimal sacrifice for performance, Developed over years of championship off-road racing,...18210887- SKU:
- 18210887
- Availability:
- Ships Same Business Day
- Weight:
- 5.30 LBS
- BASE COLOR:
- SILVER
- END CAP MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- END CAP STYLE:
- CONICAL
- MODEL:
- Q4
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- MUFFLER
- MUFFLER COLOR/FINISH:
- RAW
- STYLE:
- OVAL
- TYPE:
- SLIP-ON
MSRP: $379.99Now: $323.00Was: $379.99Qty in Cart: 0Quantity:Price:MSRP: $379.99Now: $323.00Was: $379.99Subtotal: -
On Sale
FMF PowerBomb Header 041483
FMF
MSRP: $199.99Now: $170.00Was: $199.99Utilize FMF's patented module precisely located at the initial stage of the header, Position "Bomb" increases performance; horsepower is increased as much as 10%, Act as "pre-muffler" helping to lower the decibel output, The expansion and contraction of...18220395- SKU:
- 18220395
- Availability:
- Ships Same Business Day
- Weight:
- 3.16 LBS
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERBOMB
- UNITS:
- EACH
- COLOR/FINISH:
- STAINLESS STEEL
- PRODUCT NAME:
- HEADER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- HEAD PIPE
MSRP: $199.99Now: $170.00Was: $199.99Qty in Cart: 0Quantity:Price:MSRP: $199.99Now: $170.00Was: $199.99Subtotal: -
On Sale
FMF MegaBomb Header 045592
FMF
MSRP: $599.99Now: $510.00Was: $599.99The ultimate power booster features exclusive Ti-Metal construction, Improved bottom to mid-range power, Produce the low end of a longer header and the top end of a short header, Less susceptible to damage than a long header, Run well with...18220431- SKU:
- 18220431
- Availability:
- Ships Same Business Day
- Weight:
- 2.99 LBS
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- HEADER
- MODEL:
- MEGABOMB
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $599.99Now: $510.00Was: $599.99Qty in Cart: 0Quantity:Price:MSRP: $599.99Now: $510.00Was: $599.99Subtotal: -
On Sale
FMF MegaBomb Header - Stainless Steel - '16-'18 KX450F 042338
FMF
MSRP: $374.99Now: $319.00Was: $374.99The ultimate power booster, Improved bottom to mid-range power, Less susceptible to damage than a longer header, Effectively reduces sound output by as much as 1.5 dB, Runs well with sound restricting mufflers18220445- SKU:
- 18220445
- Availability:
- Ships Same Business Day
- Weight:
- 3.05 LBS
- COLOR/FINISH:
- STAINLESS STEEL
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- MEGABOMB
- PRODUCT NAME:
- HEADER
- TYPE:
- HEAD PIPE
- WEIGHT IMPERIAL:
- 2 LB
MSRP: $374.99Now: $319.00Was: $374.99Qty in Cart: 0Quantity:Price:MSRP: $374.99Now: $319.00Was: $374.99Subtotal: -
On Sale
FMF MegaBomb Header/Mid Pipe - Stainless Steel 045612
FMF
MSRP: $474.99Now: $404.00Was: $474.99Produces long header torque and short header over-rev, Reduces sound output as much as 1.5dB, Increases output from stock motor as much as 3hp, Made from premium American materials18220448- SKU:
- 18220448
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- HEADER
- RIDING STYLE:
- OFF-ROAD
- WEIGHT IMPERIAL:
- 2.6 LB
- MODEL:
- MEGABOMB
- UNITS:
- EACH
MSRP: $474.99Now: $404.00Was: $474.99 -
On Sale
FMF MegaBomb Header 045622
FMF
MSRP: $374.99Now: $319.00Was: $374.99The ultimate power booster features exclusive Ti-Metal construction, Improved bottom to mid-range power, Produce the low end of a longer header and the top end of a short header, Less susceptible to damage than a long header, Run well with...18220482- SKU:
- 18220482
- Availability:
- Ships Same Business Day
- Weight:
- 2.25 LBS
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- MEGABOMB
- PRODUCT NAME:
- HEADER
- RIDING STYLE:
- OFF-ROAD
MSRP: $374.99Now: $319.00Was: $374.99Qty in Cart: 0Quantity:Price:MSRP: $374.99Now: $319.00Was: $374.99Subtotal: -
On Sale
FMF MegaBomb Header 045623
FMF
MSRP: $474.99Now: $404.00Was: $474.99The ultimate power booster features exclusive Ti-Metal construction, Improved bottom to mid-range power, Produce the low end of a longer header and the top end of a short header, Less susceptible to damage than a long header, Run well with...18220483- SKU:
- 18220483
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- MODEL:
- MEGABOMB
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- HEADER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $474.99Now: $404.00Was: $474.99Qty in Cart: 0Quantity:Price:MSRP: $474.99Now: $404.00Was: $474.99Subtotal: -
On Sale
FMF MegaBomb Header 045624
FMF
MSRP: $374.99Now: $319.00Was: $374.99The ultimate power booster features exclusive Ti-Metal construction, Improved bottom to mid-range power, Produce the low end of a longer header and the top end of a short header, Less susceptible to damage than a long header, Run well with...18220484- SKU:
- 18220484
- Availability:
- Ships Same Business Day
- Weight:
- 3.40 LBS
- MATERIAL:
- STAINLESS STEEL
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- MEGABOMB
- PRODUCT NAME:
- HEADER
MSRP: $374.99Now: $319.00Was: $374.99 -
On Sale
FMF MegaBomb Header 045625
FMF
MSRP: $474.99Now: $404.00Was: $474.99The ultimate power booster features exclusive Ti-Metal construction, Improved bottom to mid-range power, Produce the low end of a longer header and the top end of a short header, Less susceptible to damage than a long header, Run well with...18220485- SKU:
- 18220485
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- TITANIUM
- MODEL:
- MEGABOMB
- PRODUCT NAME:
- HEADER
MSRP: $474.99Now: $404.00Was: $474.99Qty in Cart: 0Quantity:Price:MSRP: $474.99Now: $404.00Was: $474.99Subtotal:
