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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DEI Heat Shield 010451
DEI
$75.95Exhaust heat can degrade nearby components, compromise underhood aesthetics, and create safety hazards in tight engine bays. The DEI Heat Shield 010451 provides reliable thermal protection without the bulk of traditional shields, using aerospace-grade...18611566- SKU:
- 18611566
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- STYLE:
- FLEXIBLE
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 24'
- MATERIAL:
- LAVA ROCK
- WIDTH IMPERIAL:
- 6'
- PRODUCT NAME:
- HEAT SHIELD
- RIDING STYLE:
- STREET
- TYPE:
- TITANIUM
$75.95 -
DEI Heat Shield 902453
DEI
$55.95Exhaust heat management is critical to protecting engine bay components, preventing heat soak, and maintaining consistent performance during extended track sessions or spirited driving. DEI's Heat Shield 902453 combines superior thermal protection with a...18611568- SKU:
- 18611568
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- PRODUCT NAME:
- HEAT SHIELD
- UNITS:
- EACH
- WIDTH IMPERIAL:
- 4'
- LENGTH IMPERIAL:
- 8'
- MATERIAL:
- LAVA ROCK
- RIDING STYLE:
- STREET
- STYLE:
- FLEXIBLE
- TYPE:
- TITANIUM
$55.95 -
FMF Powercore 4 HEX Muffler 044462
FMF
$399.99If you're looking to unlock measurable gains in power and torque without sacrificing reliability, the FMF Powercore 4 HEX delivers. This muffler combines high-flow design with durable construction to keep you performing at your peak, lap after lap...18212010- SKU:
- 18212010
- Availability:
- Ships Same Business Day
- Weight:
- 7.90 LBS
- MUFFLER MATERIAL:
- ALUMINUM
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4 HEX
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- PRODUCT NAME:
- MUFFLER
- MUFFLER COLOR/FINISH:
- RAW
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
$399.99Qty in Cart: 0Quantity:Price:$399.99Subtotal: -
FMF Factory 4.1 RCT Muffler - Aluminum 044464
FMF
$674.99If you're serious about extracting maximum power from your engine while reducing unsprung weight, the FMF Factory 4.1 RCT Muffler delivers measurable gains across the entire RPM range without compromise. By centralizing mass closer to the motor through...18212012- SKU:
- 18212012
- Availability:
- Ships Same Business Day
- Weight:
- 8.40 LBS
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- RAW
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- PRODUCT NAME:
- MUFFLER
- MUFFLER MATERIAL:
- ALUMINUM
- PIPE MATERIAL:
- STAINLESS STEEL
$674.99 -
FMF Factory 4.1 RCT Muffler - Anodized Titanium 044466
FMF
$799.99If you're serious about extracting maximum power from your machine while minimizing unsprung weight, the FMF Factory 4.1 RCT is engineered to deliver across the entire RPM band. Its shorter, centralized design reduces crash vulnerability and lowers your...18212013- SKU:
- 18212013
- Availability:
- Ships Same Business Day
- Weight:
- 8.40 LBS
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- PIPE MATERIAL:
- TITANIUM
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- MUFFLER MATERIAL:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- MUFFLER
$799.99 -
FMF Factory 4.1 Muffler 042394
FMF
$599.99The FMF Factory 4.1 Muffler delivers a tuned exhaust note that doesn't sacrifice performance—optimized flow characteristics reduce backpressure while maintaining street-legal sound levels. Whether you're maximizing horsepower on the dyno or simply want a...18212035- SKU:
- 18212035
- Availability:
- Ships Same Business Day
- Weight:
- 7.68 LBS
- PRODUCT NAME:
- MUFFLER
- END CAP STYLE:
- CONICAL
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- COLOR/FINISH:
- SILVER
- MODEL:
- FACTORY 4.1 RCT
- RIDING STYLE:
- OFF-ROAD
- END CAP COLOR/FINISH:
- BLACK
- END CAP MATERIAL:
- CARBON FIBER
- MATERIAL:
- ALUMINUM
$599.99 -
FMF Factory 4.1 Muffler 042396
FMF
$749.99The FMF Factory 4.1 Muffler delivers the performance exhaust flow your engine demands while maintaining street-legal sound levels. This is the choice of professional racers and serious enthusiasts who refuse to compromise between power gains and...18212036- SKU:
- 18212036
- Availability:
- Ships Same Business Day
- Weight:
- 6.70 LBS
- COLOR/FINISH:
- ANODIZED
- MODEL:
- FACTORY 4.1 RCT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- END CAP MATERIAL:
- CARBON FIBER
- END CAP STYLE:
- CONICAL
- PRODUCT NAME:
- MUFFLER
- UNITS:
- EACH
- COLOR/FINISH:
- BLUE
- END CAP COLOR/FINISH:
- SILVER
- MATERIAL:
- TITANIUM
$749.99 -
FMF Powercore 4 Muffler 042392
FMF
$399.99The FMF Powercore 4 Muffler delivers the performance exhaust solution you need when stock silencers are holding back your engine's potential. This proven design reduces backpressure while maintaining streetable sound levels, giving you measurable...18212038- SKU:
- 18212038
- Availability:
- Ships Same Business Day
- Weight:
- 6.60 LBS
- MUFFLER MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- PIPE MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4
$399.99 -
FMF Powercore 4 Muffler 041600
FMF
$399.99The FMF Powercore 4 delivers the exhaust flow efficiency and sound character that serious riders demand. Whether you're chasing lap times on the track or maximizing mid-range punch on the street, this muffler combines proven silencing technology with...18212041- SKU:
- 18212041
- Availability:
- Ships Same Business Day
- Weight:
- 6.80 LBS
- MUFFLER MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- PIPE MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4
- TYPE:
- SLIP-ON
$399.99 -
FMF Q4 Muffler 041601
FMF
$449.99If you're running a high-performance machine, your exhaust system is either working for you or against you. The FMF Q4 Muffler delivers a significant reduction in backpressure while maintaining sound control, giving you the horsepower gains and throttle...18212042- SKU:
- 18212042
- Availability:
- Ships Same Business Day
- Weight:
- 7.30 LBS
- MODEL:
- Q4 HEX
- TYPE:
- SLIP-ON
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- END CAP MATERIAL:
- STAINLESS STEEL
- END CAP STYLE:
- SLASH-CUT
$449.99 -
FMF Factory 4.1 Muffler 041602
FMF
$674.99The FMF Factory 4.1 Muffler delivers race-proven exhaust flow with minimal back pressure, giving you measurable gains in horsepower and throttle response. Built with premium materials and precision engineering, this bolt-on muffler is designed for riders...18212043- SKU:
- 18212043
- Availability:
- Ships Same Business Day
- Weight:
- 7.50 LBS
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1
- PRODUCT NAME:
- MUFFLER
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
$674.99 -
FMF Factory 4.1 Muffler 041603
FMF
$899.99The FMF Factory 4.1 Muffler is engineered for riders who demand maximum power delivery without sacrificing low-end torque or rideability. This muffler combines a strategically tuned internal chamber design with a compact footprint, making it ideal for...18212044- SKU:
- 18212044
- Availability:
- Ships Same Business Day
- Weight:
- 7.30 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- TITANIUM
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1
- PRODUCT NAME:
- MUFFLER
- UNITS:
- EACH
- TYPE:
- SLIP-ON
$899.99 -
FMF PowerBomb Header 042037
FMF
$249.99If you're looking to unlock measurable performance gains without sacrificing street manners, the FMF PowerBomb Header 042037 delivers both. Its patented expansion chamber design boosts horsepower by up to 10% while actively managing exhaust tone—a rare...18220012- SKU:
- 18220012
- Availability:
- Ships Same Business Day
- Weight:
- 3.10 LBS
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERBOMB
- UNITS:
- EACH
- COLOR/FINISH:
- STAINLESS STEEL
- PRODUCT NAME:
- HEADER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- HEAD PIPE
$249.99 -
FMF Powercore 4 with Spark Arrestor 043376
FMF
$399.99If you're running a high-performance engine, your exhaust system directly impacts how much power and torque you can extract. The FMF Powercore 4 delivers measurable gains through optimized flow dynamics and advanced internal packing, while the included...18212016- SKU:
- 18212016
- Availability:
- Ships Same Business Day
- Weight:
- 7.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- MUFFLER MATERIAL:
- ALUMINUM
- PIPE MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- MUFFLER
- BASE COLOR:
- SILVER
- UNITS:
- EACH
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4
$399.99 -
FMF Q4 Muffler 043377
FMF
$449.99If you're running off-road or track applications where exhaust noise and backpressure directly impact performance, the FMF Q4 delivers championship-proven silencing without sacrificing flow. Engineered through years of competitive racing, this muffler...18212017- SKU:
- 18212017
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
- END CAP STYLE:
- CONICAL
- MODEL:
- Q4
- MUFFLER MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- PIPE MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SLIP-ON
- BASE COLOR:
- SILVER
- END CAP MATERIAL:
- STAINLESS STEEL
- MUFFLER COLOR/FINISH:
- RAW
$449.99 -
FMF Factory 4.1 Muffler 041592
FMF
$299.99If weight and power are your priorities, the FMF Factory 4.1 Muffler delivers both without compromise. The exclusive Chamber Core technology optimizes exhaust flow across the entire RPM range while keeping rotational mass to a minimum—critical for...18212018- SKU:
- 18212018
- Availability:
- Ships Same Business Day
- Weight:
- 2.66 LBS
- MODEL:
- FACTORY 4.1
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- END CAP MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- MUFFLER
$299.99 -
FMF Factory 4.1 Muffler 041593
FMF
$349.99If you're serious about extracting maximum power from your machine while cutting parasitic weight, the FMF Factory 4.1 Muffler delivers measurable gains across the entire RPM band—without compromise. This is titanium exhaust engineering built on real...18212019- SKU:
- 18212019
- Availability:
- Ships Same Business Day
- Weight:
- 2.58 LBS
- END CAP MATERIAL:
- STAINLESS STEEL
- TYPE:
- SLIP-ON
- UNITS:
- EACH
- MATERIAL:
- TITANIUM
- MODEL:
- FACTORY 4.1
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
$349.99 -
FMF Factory 4.1 Muffler 041595
FMF
$349.99If you're serious about extracting maximum power from your bike while shedding unnecessary weight, the FMF Factory 4.1 Muffler delivers measurable gains across the entire RPM band. Factory Forward Engineering's proprietary Chamber Core technology...18212021- SKU:
- 18212021
- Availability:
- Ships Same Business Day
- Weight:
- 3.14 LBS
- COLOR/FINISH:
- TITANIUM
- MUFFLER MATERIAL:
- TITANIUM
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- END CAP MATERIAL:
- STAINLESS STEEL
- COLOR/FINISH:
- ANODIZED
- TYPE:
- SLIP-ON
- MODEL:
- FACTORY 4.1
- UNITS:
- EACH
$349.99 -
FMF Factory 4.1 Muffler 042383
FMF
$349.99If you're serious about extracting maximum power from your bike while shedding unnecessary weight, the FMF Factory 4.1 delivers measurable gains across the entire RPM band. Built from premium American titanium and engineered with exclusive Chamber Core...18212023- SKU:
- 18212023
- Availability:
- Ships Same Business Day
- Weight:
- 3.57 LBS
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- FACTORY 4.1
- MUFFLER MATERIAL:
- TITANIUM
- UNITS:
- EACH
- END CAP MATERIAL:
- STAINLESS STEEL
- TYPE:
- SLIP-ON
$349.99 -
FMF Powercore 4 Muffler 041596
FMF
$399.99The FMF Powercore 4 Muffler delivers measurable gains in power and torque while maintaining durability through punishing riding conditions. Built with premium stainless steel and aluminum construction, this muffler combines lightweight design with...18212026- SKU:
- 18212026
- Availability:
- Ships Same Business Day
- Weight:
- 6.30 LBS
- BASE COLOR:
- SILVER
- PRODUCT NAME:
- MUFFLER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4
- TYPE:
- SLIP-ON
- END CAP STYLE:
- CONICAL
- MUFFLER MATERIAL:
- ALUMINUM
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$399.99
