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 Factory Fatty Pipe 024069
FMF
$299.99The FMF Factory Fatty Pipe delivers the proven performance characteristics of factory racing systems, with a broadened and smoothed power curve that generates gains across your entire power band...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
$299.99 -
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...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 Factory Fatty Pipe - '01-'07 RM125 023058
FMF
$319.99If 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...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
$319.99 -
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...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...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...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
$319.99If you're running a stock exhaust system, you're leaving measurable power on the table across your entire RPM range. The FMF Factory Fatty Pipe delivers the kind of broad, linear power gains that...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
$319.99 -
FMF Factory 4.1 RCT Exhaust - Titanium 042398
FMF
$1,224.99The FMF Factory 4.1 RCT Exhaust delivers measurable power gains through optimized scavenging and reduced backpressure, making it the choice for riders demanding real performance improvements...18201984- 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
$974.99The FMF Factory 4.1 RCT Exhaust delivers measurable gains in horsepower and torque while maintaining street-legal sound levels—a rare combination for serious riders who refuse to compromise on...18201985- 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
$509.99If you're running stock exhaust on a performance machine, you're leaving power on the table and adding unnecessary weight to your chassis. The FMF Factory 4.1 delivers measurable horsepower gains...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
$509.99 -
On Sale
FMF 4.1 RCT Exhaust with MegaBomb - Aluminum 044460
FMF
MSRP: $1,074.99Now: $688.00Was: $1,074.99If you're serious about extracting maximum performance from your machine while reducing unsprung weight, the FMF 4.1 RCT is engineered to deliver measurable gains across the entire RPM band. 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
MSRP: $1,074.99Now: $688.00Was: $1,074.99 -
FMF Gnarly Exhaust - Sherco 025265
FMF
$329.99If you're running a 2-stroke in demanding off-road conditions, the FMF Gnarly Exhaust delivers the low-end torque and mid-range pull you need to power through technical terrain. This pipe is...18201944- SKU:
- 18201944
- Availability:
- Ships Same Business Day
- Weight:
- 5.20 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- STEEL
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
$329.99 -
FMF Factory Fatty Pipe 025268
FMF
$299.99If you're chasing consistent power delivery across your entire power band, the FMF Factory Fatty Pipe delivers where it matters most—low-end responsiveness, mid-range punch, and extended over-rev...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
$329.99If you're running a 2-stroke in demanding off-road conditions, you need an exhaust system engineered for low-end grunt rather than peak RPM numbers. The FMF Gnarly delivers the kind of tractor-like...18201946- SKU:
- 18201946
- Availability:
- Ships Same Business Day
- Weight:
- 5.21 LBS
- TYPE:
- EXHAUST
- PRODUCT NAME:
- PIPE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$329.99 -
FMF Gnarly Exhaust - Beta 025270
FMF
$329.99If you're running a 2-stroke in demanding off-road conditions, you need an exhaust built to deliver low-end torque without sacrificing durability. The FMF Gnarly Exhaust is engineered to maximize...18201947- SKU:
- 18201947
- Availability:
- Ships Same Business Day
- Weight:
- 5.65 LBS
- TYPE:
- EXHAUST
- PRODUCT NAME:
- PIPE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$329.99 -
FMF Factory 4.1 RCT Exhaust - Aluminum 045650
FMF
$1,074.99If you're running a high-revving machine that demands both peak performance and compliance with sound regulations, the FMF Factory 4.1 RCT strikes the rare balance between unrestricted power and...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
$1,074.99Qty in Cart: 0Quantity:Price:$1,074.99Subtotal: -
FMF Fatty Pipe 025263
FMF
$329.99The FMF Fatty Gold Series pipe is engineered to deliver consistent power gains across your entire power band—from low-end torque to over-rev performance. If you're looking for a bolt-on solution that...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
$329.99 -
FMF Gnarly Pipe 020083
FMF
$329.99If you're running a 2-stroke in serious off-road terrain, you know the performance ceiling hits fast. The FMF Gnarly Pipe delivers the low-end torque and mid-range pull you'd expect from a larger...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
$329.99 -
FMF Powercore 4 Exhaust 042005
FMF
$279.99If you're running a 4-stroke and leaving performance on the table with a stock exhaust, the FMF Powercore 4 is engineered to deliver measurable gains in power and throttle response. Computer-designed...FMF042005- SKU:
- FMF042005
- Availability:
- Ships Same Business Day
- Weight:
- 3.30 LBS
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- END CAP STYLE:
- EURO
- FEATURES:
- STANDARD
- MATERIAL:
- ALUMINUM
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- ELLIPTICAL
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
$279.99 -
FMF Powercore 4 Exhaust 042002
FMF
$299.99The FMF Powercore 4 exhaust delivers measurable gains in power and throttle response by optimizing exhaust gas flow through computer-designed engineering and dyno-tested tuning. If you're serious...FMF042002- SKU:
- FMF042002
- Availability:
- Ships Same Business Day
- Weight:
- 3.92 LBS
- END CAP STYLE:
- EURO
- FEATURES:
- WITH SPARK ARRESTOR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- MATERIAL:
- ALUMINUM
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- STYLE:
- ELLIPTICAL
$299.99
