Dirt Bike Exhaust Kits
Dirt Bike Exhaust Kits for Honda CRF & Yamaha YZ at JJ Motorsports
Unlock more power and lighter weight with premium dirt bike exhaust kits from JJ Motorsports, featuring full systems with headers, mid-pipes, and mufflers for superior flow, reduced weight, and aggressive sound in motocross and enduro riding. Compatible with Honda CRF and Yamaha YZ models, these Pro Circuit kits deliver bolt-on gains in horsepower, torque, and throttle response with stainless steel or titanium construction for durability.
Shop Pro Circuit exhaust systems at JJ Motorsports for race-proven performance. Explore related categories such as dirt bike silencers and mufflers for slip-ons or dirt bike air and fuel for tuning essentials.
Top Dirt Bike Exhaust Kits
- Pro Circuit T-6 Exhaust Yamaha YZ125 2014-2023 0111311G – Complete T-6 system with stainless header and aluminum muffler for 2-stroke power gains.
- Pro Circuit Ti-6 Exhaust System Honda CRF250R 2022 0312225F – Titanium full system with hex muffler for lightweight performance and crisp sound.
- Pro Circuit T-6 Exhaust System with Carbon Fiber End Cap Honda CRF450R 2022 0352245F – T-6 system with carbon end cap for reduced weight and premium styling.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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FMF Fatty Pipe 024072
FMF
$299.99With well over 35 years of racing experience behind it, the Fatty Gold Series pipe delivers race proven performance, The Fatty broadens and smooths out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and...18201850- SKU:
- 18201850
- Availability:
- Ships Same Business Day
- Weight:
- 5.90 LBS
- TYPE:
- EXHAUST
- MODEL:
- FATTY
- PRODUCT NAME:
- PIPE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CARBON STEEL
- UNITS:
- EACH
$299.99 -
FMF Factory Fatty Pipe 024073
FMF
$299.99The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its’ craftsmanship and material quality, Broadens and smooths out the power curve while boosting gains throughout...18201851- SKU:
- 18201851
- Availability:
- Ships Same Business Day
- Weight:
- 5.95 LBS
- MATERIAL:
- STEEL
- TYPE:
- EXHAUST
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- MODEL:
- FACTORY FATTY
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Factory Fatty Pipe 024069
FMF
$289.99The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its’ craftsmanship and material quality, Broadens and smooths out the power curve while boosting gains throughout...18201828- SKU:
- 18201828
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- MODEL:
- FACTORY FATTY
- PRODUCT NAME:
- PIPE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- STEEL
- TYPE:
- EXHAUST
$289.99 -
FMF Factory Fatty Pipe - '03-'04 CR250R 021043
FMF
$299.99The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its’ craftsmanship and material quality, Broadens and smooths out the power curve while boosting gains throughout...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
$299.99 -
FMF Factory Fatty Pipe - '01-'07 RM125 023058
FMF
$299.99The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its’ craftsmanship and material quality, Broadens and smooths out the power curve while boosting gains throughout...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
$279.99Hi-Flo end cap boosts all-around performance, Computer designed and dyno-tested for every 4-stroke application, Enhanced sonic evacuation delivers a higher flow of exhaust gases, which increases power, A stainless steel mid-pipe mates to the...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
$279.99Hi-Flo end cap boosts all-around performance, Computer designed and dyno-tested for every 4-stroke application, Enhanced sonic evacuation delivers a higher flow of exhaust gases, which increases power, A stainless steel mid-pipe mates to the...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
$299.99Hi-Flo end cap boosts all-around performance, Computer designed and dyno-tested for every 4-stroke application, Enhanced sonic evacuation delivers a higher flow of exhaust gases, which increases power, A stainless steel mid-pipe mates to the...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 Factory Fatty Pipe 025183
FMF
$299.99The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its’ craftsmanship and material quality, Broadens and smooths out the power curve while boosting gains throughout...18201683- SKU:
- 18201683
- Availability:
- Ships Same Business Day
- Weight:
- 3.55 LBS
- MODEL:
- FACTORY FATTY
- TYPE:
- EXHAUST
- PRODUCT NAME:
- PIPE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- STEEL
$299.99 -
FMF Factory 4.1 RCT Exhaust - Titanium 042398
FMF
$1,224.99FMF Factory 4.1 RCT Exhaust - Titanium18201984- SKU:
- 18201984
- Availability:
- Ships Same Business Day
- Weight:
- 8.00 LBS
- END CAP COLOR/FINISH:
- CARBON FIBER
- MATERIAL:
- TITANIUM
- MUFFLER MATERIAL:
- TITANIUM
- UNITS:
- EACH
- MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- TYPE:
- FULL SYSTEM
- PIPE MATERIAL:
- TITANIUM
- PRODUCT NAME:
- EXHAUST SYSTEM
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- MUFFLER COLOR/FINISH:
- BLUE ANODIZED
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- MEGABOMB
$1,224.99 -
FMF Factory 4.1 RCT Exhaust - Aluminum 042397
FMF
$974.99FMF Factory 4.1 RCT Exhaust - Aluminum18201985- SKU:
- 18201985
- Availability:
- Ships Same Business Day
- Weight:
- 12.20 LBS
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- EXHAUST SYSTEM
- END CAP COLOR/FINISH:
- CARBON FIBER
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER MATERIAL:
- ALUMINUM
- MUFFLER COLOR/FINISH:
- NATURAL
- PIPE MATERIAL:
- STAINLESS STEEL
- TYPE:
- FULL SYSTEM
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- MEGABOMB
- UNITS:
- EACH
$974.99 -
FMF Factory 4.1 Exhaust - Anodized Titanium/Stainless Steel 042381
FMF
$459.99Superior power than stock systems, Available with titanium and stainless steel headers, FMF's Factory Forward Engineering centralizes mass and is less prone to crash damage, Innovative rear end cap features simple installation of tuning tip inserts or...18201967- SKU:
- 18201967
- Availability:
- Ships Same Business Day
- Weight:
- 3.84 LBS
- MODEL:
- FACTORY 4.1
- UNITS:
- EACH
- MUFFLER MATERIAL:
- TITANIUM
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
- END CAP MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- EXHAUST SYSTEM
$459.99 -
FMF 4.1 RCT Exhaust with MegaBomb - Aluminum 044460
FMF
$1,074.99The Factory 4.1 RCT incorporates FMF Resonance Chamber Technology™ both internally and externally, Shorter overall length that is less susceptible to crash damage and complementary to FMF's Factory Forward Engineering - moving the muffler closer to the...18201931- SKU:
- 18201931
- Availability:
- Ships Same Business Day
- Weight:
- 11.30 LBS
- END CAP MATERIAL:
- CARBON FIBER
- MUFFLER MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- PIPE MATERIAL:
- STAINLESS STEEL
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- RAW
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
$1,074.99 -
FMF Gnarly Exhaust - Sherco 025265
FMF
$299.99The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain, When looking to add 4-stroke tractor like torque to your 2-stroke and you need a pipe to withstand the harsh elements, this is the pipe...18201944- SKU:
- 18201944
- Availability:
- Ships Same Business Day
- Weight:
- 5.20 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STEEL
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99 -
FMF Factory Fatty Pipe 025268
FMF
$299.99The Factory Fatty is reminiscent of the “works” or cone pipe once used by Factory Teams and it shares many of the same characteristics with its’ craftsmanship and material quality, Broadens and smooths out the power curve while boosting gains throughout...18201945- SKU:
- 18201945
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- MATERIAL:
- STEEL
- TYPE:
- EXHAUST
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- MODEL:
- FACTORY FATTY
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Gnarly Exhaust - Beta 025269
FMF
$299.99The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain, When looking to add 4-stroke tractor like torque to your 2-stroke and you need a pipe to withstand the harsh elements, this is the pipe...18201946- SKU:
- 18201946
- Availability:
- Ships Same Business Day
- Weight:
- 5.21 LBS
- TYPE:
- EXHAUST
- PRODUCT NAME:
- PIPE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Gnarly Exhaust - Beta 025270
FMF
$299.99The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain, When looking to add 4-stroke tractor like torque to your 2-stroke and you need a pipe to withstand the harsh elements, this is the pipe...18201947- SKU:
- 18201947
- Availability:
- Ships Same Business Day
- Weight:
- 5.65 LBS
- TYPE:
- EXHAUST
- PRODUCT NAME:
- PIPE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Factory 4.1 RCT Exhaust - Aluminum 045650
FMF
$1,074.99RCT (Resonance Chamber Technology) features a patented core shape that lowers decibels while maintaining maximum power output, Internal ducts in the chambers of the RCT system increase internal volume for improved exhaust flow, resulting in power gains...18201954- SKU:
- 18201954
- Availability:
- Ships Same Business Day
- Weight:
- 9.80 LBS
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- MEGABOMB
- MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- RAW
- MUFFLER MATERIAL:
- ALUMINUM
- TYPE:
- FULL SYSTEM
- END CAP MATERIAL:
- CARBON FIBER
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- EXHAUST SYSTEM
$1,074.99 -
FMF Fatty Pipe 025263
FMF
$299.99With well over 35 years of racing experience behind it, the Fatty Gold Series pipe delivers race proven performance, The Fatty broadens and smooths out the power curve while boosting gains throughout the entire power band, more low-end, more mid, and...18220489- SKU:
- 18220489
- Availability:
- Ships Same Business Day
- Weight:
- 5.30 LBS
- TYPE:
- EXHAUST
- MATERIAL:
- CARBON STEEL
- MODEL:
- FATTY
- PRODUCT NAME:
- PIPE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$299.99 -
FMF Gnarly Pipe 020083
FMF
$299.99The FMF Gnarly pipe focuses on increasing the lower RPM horsepower and torque to get you out of the toughest terrain, When looking to add 4-stroke tractor like torque to your 2-stroke and you need a pipe to withstand the harsh elements, this is the pipe...FMFMG32- SKU:
- FMFMG32
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- NICKEL-PLATED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
- MODEL:
- GNARLY
- PRODUCT NAME:
- PIPE
$299.99
