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 025073
FMF
$299.99The FMF Fatty Pipe 025073 is engineered to extract maximum horsepower by optimizing exhaust scavenging at the RPM ranges where your machine operates hardest. Computer-designed and dyno-validated, this pipe delivers measurable performance gains without...18200084- SKU:
- 18200084
- Availability:
- Ships Same Business Day
- Weight:
- 5.40 LBS
- COLOR/FINISH:
- NICKEL-PLATED
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MODEL:
- GOLD SERIES FATTY
- PRODUCT NAME:
- HEAD PIPE
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STEEL
$299.99 -
FMF Fatty Pipe 021040
FMF
$299.99The FMF Fatty Pipe 021040 is engineered to extract measurable power gains by optimizing exhaust flow where your specific machine needs it most. Computer modeling and dyno testing ensure this pipe delivers real performance improvements, not theoretical...18200006- SKU:
- 18200006
- Availability:
- Ships Same Business Day
- Weight:
- 7.70 LBS
- COLOR/FINISH:
- NICKEL-PLATED
- UNITS:
- KIT
- MODEL:
- GOLD SERIES FATTY
- PRODUCT NAME:
- HEAD PIPE
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99Qty in Cart: 0Quantity:Price:$299.99Subtotal: -
FMF Factory Fatty Pipe - '03-'04 CR250R 021043
FMF
$299.99If you're running a CR250R, this is the pipe that separates competitive advantage from the pack. The Factory Fatty delivers a broader, more usable power curve across the entire rev range—more low-end response, stronger mid-range punch, and extended...18200009- SKU:
- 18200009
- Availability:
- Ships Same Business Day
- Weight:
- 6.70 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MODEL:
- FACTORY FATTY
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99Qty in Cart: 0Quantity:Price:$299.99Subtotal: -
FMF Fatty Pipe 022040
FMF
$299.99The FMF Fatty Pipe 022040 delivers measurable power gains by optimizing exhaust scavenging at the RPM ranges where your engine operates hardest. Dyno-tested tuning ensures this isn't a one-size-fits-all solution—it's engineered to extract performance...18200010- SKU:
- 18200010
- Availability:
- Ships Same Business Day
- Weight:
- 7.82 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
$299.99 -
FMF Fatty Pipe 024049
FMF
$299.99The FMF Fatty Pipe 024049 is engineered to extract measurable power gains by optimizing exhaust flow where your machine needs it most. Computer-designed and dyno-tested for proven performance improvements, this pipe delivers the kind of real-world...18200132- SKU:
- 18200132
- Availability:
- Ships Same Business Day
- Weight:
- 5.50 LBS
- COLOR/FINISH:
- NICKEL-PLATED
- UNITS:
- KIT
- MODEL:
- GOLD SERIES FATTY
- PRODUCT NAME:
- HEAD PIPE
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99Qty in Cart: 0Quantity:Price:$299.99Subtotal: -
FMF Fatty Pipe 021044
FMF
$299.99The FMF Fatty Pipe 021044 is engineered to extract measurable power gains by targeting the specific flow characteristics your machine needs. Computer design and dyno testing ensure this exhaust component delivers real performance improvements, not...18200160- SKU:
- 18200160
- Availability:
- Ships Same Business Day
- Weight:
- 5.10 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- HEAD PIPE
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- COLOR/FINISH:
- NICKEL-PLATED
- MODEL:
- GOLD SERIES FATTY
- UNITS:
- KIT
$299.99Qty in Cart: 0Quantity:Price:$299.99Subtotal: -
FMF Gnarly Pipe 024054
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 the torque you're after. This pipe is engineered to maximize horsepower and torque in the lower RPM range—exactly where...18200173- SKU:
- 18200173
- Availability:
- Ships Same Business Day
- Weight:
- 7.85 LBS
- MODEL:
- GNARLY
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- NICKEL-PLATED
- PRODUCT NAME:
- PIPE
$299.99 -
FMF Gnarly Pipe 025085
FMF
$299.99If you're running a 2-stroke off-road machine and tired of feeling underpowered in the low end, the FMF Gnarly Pipe delivers the bottom-to-midrange torque you need to attack technical terrain with confidence. This pipe is engineered specifically for...18200176- SKU:
- 18200176
- Availability:
- Ships Same Business Day
- Weight:
- 6.90 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 - '01-'07 RM125 023058
FMF
$299.99If you're running a 2-stroke dirt bike, your exhaust pipe is where raw engine potential either gets realized or wasted. The FMF Factory Fatty delivers the kind of power curve optimization that separates competitive riders from the rest—smoothing out...18200225- SKU:
- 18200225
- Availability:
- Ships Same Business Day
- Weight:
- 5.50 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MODEL:
- FACTORY FATTY
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99 -
FMF Powercore 4 Exhaust 044136
FMF
$279.99The FMF Powercore 4 is engineered for 4-stroke engines where every fraction of a second matters. Its computer-designed geometry and dyno-tested architecture deliver measurable gains in power and throttle response by optimizing exhaust scavenging. Built...18200248- SKU:
- 18200248
- Availability:
- Ships Same Business Day
- Weight:
- 3.85 LBS
- FEATURES:
- STANDARD
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- SILVER
- MATERIAL:
- ALUMINUM
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- END CAP STYLE:
- EURO
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- STYLE:
- ELLIPTICAL
$279.99 -
FMF Powercore 4 Exhaust 041178
FMF
$279.99The FMF Powercore 4 is engineered for 4-stroke engines that demand reliable, measurable performance gains. Computer-designed and dyno-tested across multiple applications, this exhaust delivers increased horsepower and torque through optimized gas...18200252- SKU:
- 18200252
- Availability:
- Ships Same Business Day
- Weight:
- 3.33 LBS
- BASE COLOR:
- SILVER
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- STYLE:
- ELLIPTICAL
- TYPE:
- FULL SYSTEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- END CAP STYLE:
- EURO
- FEATURES:
- STANDARD
- MATERIAL:
- ALUMINUM
- MATERIAL:
- STAINLESS STEEL
$279.99 -
FMF Powercore 4 Exhaust 041179
FMF
$299.99If you're running a 4-stroke machine that demands maximum power delivery and responsiveness, exhaust flow is non-negotiable. The FMF Powercore 4 eliminates restrictive backpressure through computer-optimized design and dyno-validated tuning, translating...18200253- SKU:
- 18200253
- Availability:
- Ships Same Business Day
- Weight:
- 3.86 LBS
- BASE COLOR:
- SILVER
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- STYLE:
- ELLIPTICAL
- TYPE:
- FULL SYSTEM
- FEATURES:
- WITH SPARK ARRESTOR
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
$299.99 -
FMF Fatty Pipe 025119
FMF
$299.99The FMF Fatty Pipe 025119 delivers measurable horsepower gains by optimizing exhaust flow precisely where your engine needs it most. Computer-designed and dyno-tested engineering means you're not guessing at performance—every curve and diameter is...18201108- SKU:
- 18201108
- Availability:
- Ships Same Business Day
- Weight:
- 4.90 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MODEL:
- GOLD SERIES FATTY
- PRODUCT NAME:
- HEAD PIPE
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STEEL
- COLOR/FINISH:
- NICKEL-PLATED
$299.99 -
FMF Fatty Pipe 025130
FMF
$299.99The FMF Fatty Pipe 025130 delivers measurable power gains by optimizing exhaust flow characteristics specific to your machine's performance curve. Engineered through computer modeling and validated on the dyno, this pipe puts power where it matters most...18201111- SKU:
- 18201111
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COLOR/FINISH:
- NICKEL-PLATED
- MODEL:
- GOLD SERIES FATTY
- PRODUCT NAME:
- HEAD PIPE
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$299.99 -
FMF End Cap - Stainless Steel - Straight Cut - PC4/Q4 040634
FMF
$34.99A worn or damaged exhaust end cap compromises both aesthetics and performance—it can disrupt exhaust flow, allow unwanted debris into your system, and detract from a professional setup. This FMF stainless steel end cap delivers a clean, finished look...18600500- SKU:
- 18600500
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- MODEL:
- Q4
- RIDING STYLE:
- UTV
- END CAP STYLE:
- STRAIGHT-CUT
- PRODUCT NAME:
- END CAP
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4
- STYLE:
- REPLACEMENT
$34.99 -
FMF RCT End Cap - Stainless Steel 040641
FMF
$49.99A damaged or corroded end cap compromises your exhaust system's structural integrity and aerodynamic efficiency. The FMF RCT End Cap delivers a precision-engineered replacement in stainless steel, engineered to withstand extreme thermal cycles and...18600561- SKU:
- 18600561
- Availability:
- Ships Same Business Day
- Weight:
- 0.72 LBS
- MATERIAL:
- STAINLESS STEEL
- OUTSIDE DIAMETER IMPERIAL:
- 4'
- TYPE:
- EXHAUST
- END CAP STYLE:
- EURO
- PRODUCT NAME:
- END CAP
- UNITS:
- KIT
- MODEL:
- FACTORY 4.1 RCT
- RIDING STYLE:
- OFF-ROAD
$49.99 -
FMF RCT End Cap - Carbon Fiber 040643
FMF
$129.99A quality end cap is essential for protecting your exhaust system's internals from debris, moisture, and corrosion while maintaining optimal backpressure and performance. The FMF RCT Carbon Fiber End Cap delivers lightweight construction without...18600563- SKU:
- 18600563
- Availability:
- Ships Same Business Day
- Weight:
- 0.54 LBS
- END CAP STYLE:
- EURO
- PRODUCT NAME:
- END CAP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- CARBON FIBER
- OUTSIDE DIAMETER IMPERIAL:
- 4'
- MODEL:
- FACTORY 4.1 RCT
- TYPE:
- EXHAUST
$129.99 -
FMF Muffler Sleeve - Aluminum 040652
FMF
$19.99A worn muffler sleeve compromises both exhaust flow and system integrity, leading to increased backpressure and potential exhaust leaks that rob your engine of power. The FMF Muffler Sleeve 040652 is a direct replacement that restores optimal exhaust...18600582- SKU:
- 18600582
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- LENGTH IMPERIAL:
- 4'
- RIDING STYLE:
- UTV
- TYPE:
- MID PIPE INLET SLEEVE INSERT
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- INSERT
- RIDING STYLE:
- ATV
- STYLE:
- ROUND
$19.99 -
FMF Exhaust O-Ring Kit - KTM 014803
FMF
$12.99Exhaust O-ring deterioration leads to air leaks, power loss, and failed emissions tests—problems that compound quickly under racing conditions. FMF's OEM-spec replacement kit restores the critical seal between exhaust components, ensuring optimal...18600607- SKU:
- 18600607
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- O-RING
- TYPE:
- EXHAUST
- UNITS:
- PAIR
$12.99 -
FMF Quiet Core Spark Arrestor Insert - Q4 Hex 040671
FMF
$39.99If you're running a 4-stroke off-road bike in areas with strict spark arrestor regulations, a clogged or damaged insert tanks your performance and invites fines. The FMF Quiet Core Spark Arrestor Insert keeps your exhaust flowing freely while staying...18600701- SKU:
- 18600701
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- SCREEN INSERT
- TYPE:
- SPARK ARRESTOR
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- Q4 HEX
$39.99
