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
-
FMF Powercore 4 Exhaust 041533
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...18201539- SKU:
- 18201539
- Availability:
- Ships Same Business Day
- Weight:
- 3.42 LBS
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- FEATURES:
- STANDARD
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
$279.99Qty in Cart: 0Quantity:Price:$279.99Subtotal: -
FMF Powercore 4 Exhaust 041534
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...18201543- SKU:
- 18201543
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
- BASE COLOR:
- SILVER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- FEATURES:
- WITH SPARK ARRESTOR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
$299.99 -
FMF Factory Fatty Pipe - '13-'19 RR250/300 025157
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...18201487- SKU:
- 18201487
- Availability:
- Ships Same Business Day
- Weight:
- 6.68 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MODEL:
- FACTORY FATTY
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99 -
FMF Gnarly Pipe 025218
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...18201790- SKU:
- 18201790
- Availability:
- Ships Same Business Day
- Weight:
- 9.30 LBS
- COLOR/FINISH:
- NICKEL-PLATED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- MODEL:
- GNARLY
$299.99 -
FMF Factory Fatty Pipe 025219
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...18201791- SKU:
- 18201791
- Availability:
- Ships Same Business Day
- Weight:
- 5.25 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MODEL:
- FACTORY FATTY
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99 -
FMF Fatty Pipe 025221
FMF
$299.99Computer designed and dyno tested to make power gains where each machine needs them the most, Tru-Flo stamping process ensures a perfect fit and optimum performance, Constructed of strong 19-gauge steel with a nickel-plated finish18201792- SKU:
- 18201792
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- COLOR/FINISH:
- NICKEL-PLATED
- MODEL:
- GOLD SERIES FATTY
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- PRODUCT NAME:
- PIPE
- UNITS:
- EACH
$299.99 -
FMF Factory Fatty Big Bore Exhaust 025224
FMF
$299.99Based on the successful exhaust pipe used by pro riders, 19-gauge steel used on the header portion for optimum strength and durability; 20-gauge steel on body and rear section for increased weight savings, Seams are hand pounded after stamping process...18201794- SKU:
- 18201794
- Availability:
- Ships Same Business Day
- Weight:
- 4.01 LBS
- PRODUCT NAME:
- PIPE
- MODEL:
- BIG BORE
- MODEL:
- FACTORY FATTY
- TYPE:
- EXHAUST
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Factory Fatty Pipe - 65SX/TC65 025198
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...18201693- SKU:
- 18201693
- Availability:
- Ships Same Business Day
- Weight:
- 4.00 LBS
- MODEL:
- FACTORY FATTY
- TYPE:
- EXHAUST
- PRODUCT NAME:
- PIPE
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$289.99 -
FMF Factory Fatty Pipe 025204
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...18201714- SKU:
- 18201714
- Availability:
- Ships Same Business Day
- Weight:
- 6.90 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
- MODEL:
- FACTORY FATTY
$299.99 -
FMF Factory Fatty Rev Pipe 022064
FMF
$299.99Pipe focuses its power delivery in the middle and upper RPM of the power band, If you're running out of power up top, want more time between shifts and do a lot of deep berm or sand riding, the FMF Rev is your pipe of choice, FMF Racing's Tru-Flo...18201715- SKU:
- 18201715
- Availability:
- Ships Same Business Day
- Weight:
- 5.00 LBS
- MODEL:
- FACTORY FATTY REV
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99 -
FMF Factory 4.1 RCT Exhaust - Titanium 042378
FMF
$1,199.99RCT (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...18201901- SKU:
- 18201901
- Availability:
- Ships Same Business Day
- Weight:
- 8.15 LBS
- MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- TYPE:
- FULL SYSTEM
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- RIDING STYLE:
- OFF-ROAD
- PIPE MATERIAL:
- TITANIUM
- PRODUCT NAME:
- EXHAUST SYSTEM
- END CAP MATERIAL:
- CARBON FIBER
- MATERIAL:
- TITANIUM
- MUFFLER MATERIAL:
- TITANIUM
- STYLE:
- MEGABOMB
- UNITS:
- EACH
$1,199.99 -
FMF Fatty Pipe 025238
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...18201865- SKU:
- 18201865
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
- MODEL:
- FATTY
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CARBON STEEL
- UNITS:
- EACH
$299.99 -
FMF Factory Fatty Pipe 025239
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...18201866- SKU:
- 18201866
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- FACTORY FATTY
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99 -
FMF Factory Fatty Rev Pipe 025240
FMF
$299.99Pipe focuses its power delivery in the middle and upper RPM of the power band, If you're running out of power up top, want more time between shifts and do a lot of deep berm or sand riding, the FMF Rev is your pipe of choice, FMF Racing's Tru-Flo...18201867- SKU:
- 18201867
- Availability:
- Ships Same Business Day
- Weight:
- 2.94 LBS
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- FACTORY FATTY REV
- MATERIAL:
- STEEL
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
- UNITS:
- EACH
$299.99 -
FMF Fatty Pipe 025241
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...18201868- SKU:
- 18201868
- Availability:
- Ships Same Business Day
- Weight:
- 5.05 LBS
- MATERIAL:
- CARBON STEEL
- UNITS:
- EACH
- MODEL:
- FATTY
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$299.99 -
FMF Gnarly Pipe 025242
FMF
$299.99Power gains are focused toward bottom and mid, with a goal of increased tractability, An excellent off-road pipe, and a winner for tighter tracks, Built with tough 18-gauge steel18201869- SKU:
- 18201869
- Availability:
- Ships Same Business Day
- Weight:
- 5.60 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- NICKEL-PLATED
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
- MODEL:
- GNARLY
$299.99 -
FMF Factory Fatty Pipe 025243
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...18201870- SKU:
- 18201870
- Availability:
- Ships Same Business Day
- Weight:
- 5.15 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
- MODEL:
- FACTORY FATTY
$299.99 -
FMF 4.1 RCT Exhaust with MegaBomb - Aluminum 044456
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...18201840- SKU:
- 18201840
- Availability:
- Ships Same Business Day
- Weight:
- 7.90 LBS
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- RAW
- MUFFLER MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PIPE MATERIAL:
- STAINLESS STEEL
- TYPE:
- FULL SYSTEM
- PRODUCT NAME:
- EXHAUST SYSTEM
$1,074.99 -
FMF 4.1 RCT Exhaust with MegaBomb - Anodized Titanium 044457
FMF
$1,374.99The 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...18201841- SKU:
- 18201841
- Availability:
- Ships Same Business Day
- Weight:
- 7.80 LBS
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- TYPE:
- FULL SYSTEM
- RIDING STYLE:
- OFF-ROAD
- PIPE MATERIAL:
- TITANIUM
- PRODUCT NAME:
- EXHAUST SYSTEM
- END CAP MATERIAL:
- CARBON FIBER
- MUFFLER MATERIAL:
- TITANIUM
- UNITS:
- EACH
$1,374.99Qty in Cart: 0Quantity:Price:$1,374.99Subtotal: -
FMF 4.1 RCT Exhaust with MegaBomb - Anodized Titanium 042373
FMF
$1,224.99The 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...18201844- SKU:
- 18201844
- Availability:
- Ships Same Business Day
- Weight:
- 8.95 LBS
- PIPE MATERIAL:
- TITANIUM
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- MUFFLER MATERIAL:
- TITANIUM
- END CAP MATERIAL:
- CARBON FIBER
- UNITS:
- EACH
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- RIDING STYLE:
- OFF-ROAD
$1,224.99Qty in Cart: 0Quantity:Price:$1,224.99Subtotal:
