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 025263
FMF
$299.99The 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 improves throttle control and overall rideability...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
$299.99If 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 displacement engine, transforming your 200cc–500cc machine...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 -
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 about maximizing your 4-stroke's performance while...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 -
FMF Powercore 4 Exhaust 041014
FMF
$279.99The FMF Powercore 4 Exhaust is engineered for 4-stroke engines where maximum flow efficiency directly translates to measurable power gains. Its computer-optimized design and dyno-tested performance across multiple applications mean you're not...FMF041014- SKU:
- FMF041014
- Availability:
- Ships Same Business Day
- Weight:
- 3.49 LBS
- END CAP STYLE:
- EURO
- FEATURES:
- STANDARD
- BASE COLOR:
- SILVER
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$279.99 -
FMF Powercore 4 Exhaust 040084
FMF
$299.99The FMF Powercore 4 is engineered for riders who demand measurable power gains without compromise. Computer-designed and dyno-tested across all 4-stroke platforms, this exhaust system delivers increased flow and responsiveness through optimized gas...FMF040084- SKU:
- FMF040084
- Availability:
- Ships Same Business Day
- Weight:
- 3.43 LBS
- END CAP STYLE:
- EURO
- FEATURES:
- WITH SPARK ARRESTOR
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- BASE COLOR:
- SILVER
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- ELLIPTICAL
$299.99 -
FMF Powercore 4 Exhaust 040083
FMF
$279.99The FMF Powercore 4 exhaust delivers measurable horsepower and torque gains through computer-optimized flow dynamics, proven on the dyno across 4-stroke platforms. Its stainless steel mid-pipe and elliptical aluminum can reduce weight while withstanding...FMF040083- SKU:
- FMF040083
- Availability:
- Ships Same Business Day
- Weight:
- 3.17 LBS
- BASE COLOR:
- SILVER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
- UNITS:
- KIT
- END CAP STYLE:
- EURO
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- FEATURES:
- STANDARD
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
$279.99 -
FMF Powercore 4 Exhaust 040080
FMF
$279.99The FMF Powercore 4 exhaust system is engineered to maximize exhaust gas evacuation on your 4-stroke, directly translating to measurable power gains and improved throttle response. Computer-designed and dyno-tested across every 4-stroke application, this...FMF040080- SKU:
- FMF040080
- Availability:
- Ships Same Business Day
- Weight:
- 3.24 LBS
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- ELLIPTICAL
- BASE COLOR:
- SILVER
- END CAP STYLE:
- EURO
- MATERIAL:
- ALUMINUM
- FEATURES:
- WITH SPARK ARRESTOR
- UNITS:
- KIT
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
$279.99 -
FMF Powercore 4 Exhaust 040071
FMF
$299.99If you're running a 4-stroke engine, exhaust scavenging directly impacts your power band and overall performance. The FMF Powercore 4 is computer-designed and dyno-tested to maximize exhaust gas evacuation, giving you measurable gains in horsepower and...FMF040071- SKU:
- FMF040071
- Availability:
- Ships Same Business Day
- Weight:
- 4.45 LBS
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STAINLESS STEEL
- STYLE:
- ELLIPTICAL
- END CAP STYLE:
- EURO
- BASE COLOR:
- SILVER
- MODEL:
- POWERCORE 4
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- FEATURES:
- WITH SPARK ARRESTOR
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$299.99 -
FMF Factory Fatty Pipe - '02-'18 YZ85 024039
FMF
$299.99If you're running a YZ85 and want a measurable boost across the entire power band without sacrificing rideability, the FMF Factory Fatty Pipe delivers the kind of refined power curve that factory race teams have relied on for years. This isn't just about...FMF024039- SKU:
- FMF024039
- Availability:
- Ships Same Business Day
- Weight:
- 4.85 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- PIPE
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- FACTORY FATTY
- TYPE:
- EXHAUST
- UNITS:
- EACH
$299.99 -
FMF Factory Fatty Pipe 023043
FMF
$299.99The FMF Factory Fatty Pipe delivers a broader, more responsive power curve across the entire RPM range—exactly what you need whether you're chasing lap times or tackling varied terrain. By combining lighter-gauge steel construction with hand-pounded...FMF023043- SKU:
- FMF023043
- Availability:
- Ships Same Business Day
- Weight:
- 5.30 LBS
- PRODUCT NAME:
- PIPE
- MODEL:
- FACTORY FATTY
- UNITS:
- EACH
- TYPE:
- EXHAUST
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$299.99 -
FMF Factory 4.1 Exhaust - Aluminum/Stainless Steel 042380
FMF
$409.99Stock exhaust systems sacrifice performance and durability for cost-cutting compromises. The FMF Factory 4.1 delivers measurable power gains while its centralized mass design resists crash damage—critical for both track days and aggressive riding. With...18201966- SKU:
- 18201966
- Availability:
- Ships Same Business Day
- Weight:
- 3.94 LBS
- MUFFLER MATERIAL:
- ALUMINUM
- MODEL:
- FACTORY 4.1
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- END CAP MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- EXHAUST SYSTEM
- PIPE MATERIAL:
- STAINLESS STEEL
- TYPE:
- FULL SYSTEM
$409.99 -
FMF 4.1 RCT Exhaust with MegaBomb - Anodized Titanium 045663
FMF
$1,174.99If you're serious about maximizing power delivery across your entire RPM band while trimming unnecessary weight, the FMF 4.1 RCT with MegaBomb is engineered for measurable gains. By positioning the muffler closer to the engine, you centralize mass for...18201960- SKU:
- 18201960
- Availability:
- Ships Same Business Day
- Weight:
- 11.10 LBS
- END CAP MATERIAL:
- CARBON FIBER
- MUFFLER MATERIAL:
- TITANIUM
- UNITS:
- EACH
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- PIPE MATERIAL:
- TITANIUM
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
$1,174.99 -
FMF 4.1 RCT Exhaust with MegaBomb - Anodized Titanium 045654
FMF
$1,174.99If you're serious about extracting maximum power from your bike while cutting unnecessary weight, the FMF 4.1 RCT delivers measurable gains across the entire RPM range without compromise. The shorter, centralized design reduces rotational mass and crash...18201958- SKU:
- 18201958
- Availability:
- Ships Same Business Day
- Weight:
- 9.95 LBS
- END CAP MATERIAL:
- CARBON FIBER
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- PIPE MATERIAL:
- TITANIUM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- EXHAUST SYSTEM
- MUFFLER MATERIAL:
- TITANIUM
- PIPE MATERIAL:
- STAINLESS STEEL
- TYPE:
- FULL SYSTEM
$1,174.99 -
FMF 4.1 RCT Exhaust with MegaBomb - Anodized Titanium 045652
FMF
$1,174.99If you're serious about extracting maximum performance from your machine while reducing unsprung weight, the FMF 4.1 RCT Exhaust is engineered to deliver. By relocating the muffler closer to the engine, this system optimizes mass centralization and...18201956- SKU:
- 18201956
- Availability:
- Ships Same Business Day
- Weight:
- 10.80 LBS
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- FACTORY 4.1 RCT
- MUFFLER COLOR/FINISH:
- ANODIZED BLUE
- PIPE MATERIAL:
- TITANIUM
- END CAP MATERIAL:
- CARBON FIBER
- MUFFLER MATERIAL:
- TITANIUM
- UNITS:
- EACH
$1,174.99 -
Pro Circuit Ti-6 Pro Exhaust System Suzuki RM-Z 250 2019-2025 0341925FP
PRO CIRCUIT
$1,396.95The Pro Circuit Ti-6 Pro Exhaust System delivers measurable power gains and compliance with AMA/FIM noise regulations—essential for competitive racers who can't afford to sacrifice either performance or track eligibility. Built from titanium and...18201906- SKU:
- 18201906
- Availability:
- Ships Same Business Day
- Weight:
- 10.80 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- FULL SYSTEM
- END CAP COLOR/FINISH:
- CARBON FIBER
- MATERIAL:
- TITANIUM
- MODEL:
- TI-6 PRO
- MUFFLER MATERIAL:
- TITANIUM
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- END CAP MATERIAL:
- CARBON FIBER
- MATERIAL:
- CARBON FIBER
- UNITS:
- EACH
- FEATURES:
- WITHOUT SPARK ARRESTOR
- PIPE MATERIAL:
- TITANIUM
- PRODUCT NAME:
- EXHAUST SYSTEM
$1,396.95 -
Pro Circuit T-6 Exhaust System for Suzuki RM-Z250 2019-2025 0141925G
PRO CIRCUIT
$1,089.95The Pro Circuit T-6 Exhaust System delivers measurable gains in power and throttle response while maintaining reliable performance across competitive and recreational riding. By pairing premium stainless steel construction with a refined resonance...18201908- SKU:
- 18201908
- Availability:
- Ships Same Business Day
- Weight:
- 12.20 LBS
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- T-6
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- UNITS:
- EACH
$1,089.95 -
Pro Circuit Ti-6 Exhaust System for Suzuki RM-Z250 2019-2025 0341925F
PRO CIRCUIT
$1,396.95If you're serious about extracting every bit of performance from your RM-Z250, weight savings and flow optimization are non-negotiable. The Pro Circuit Ti-6 delivers both through a full titanium construction and precision resonance chamber tuning, while...18201909- SKU:
- 18201909
- Availability:
- Ships Same Business Day
- Weight:
- 11.00 LBS
- MATERIAL:
- CARBON FIBER
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- RIDING STYLE:
- OFF-ROAD
- PIPE MATERIAL:
- TITANIUM
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- END CAP MATERIAL:
- CARBON FIBER
- MATERIAL:
- TITANIUM
- MODEL:
- TI-6
- MUFFLER MATERIAL:
- TITANIUM
- UNITS:
- EACH
$1,396.95 -
Pro Circuit T-6 Titanium Exhaust System Honda CRF450X 2019-2025 0111945GX
PRO CIRCUIT
$1,275.95The Pro Circuit T-6 Titanium Exhaust System delivers measurable gains in horsepower and throttle response while shedding unnecessary weight from your CRF450X. Built with stainless steel durability and a titanium canister, this bolt-on system handles...18201910- SKU:
- 18201910
- Availability:
- Ships Same Business Day
- Weight:
- 12.40 LBS
- END CAP MATERIAL:
- STAINLESS STEEL
- MODEL:
- T-6
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- FEATURES:
- WITH SPARK ARRESTOR
- MUFFLER MATERIAL:
- TITANIUM
- PIPE MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- DESIGN/CONFIGURATION:
- SINGLE CANISTER
- STYLE:
- ASYMMETRICAL
- UNITS:
- EACH
$1,275.95 -
Pro Circuit Works Pipe KTM 250 SX 2019 0751925-O
PRO CIRCUIT
$349.95The Pro Circuit Works Pipe is engineered to unlock measurable gains in horsepower and throttle response on your KTM 250 SX. A hand-welded carbon steel construction combined with CNC precision machining ensures consistent exhaust scavenging and durability...18201911- SKU:
- 18201911
- Availability:
- Ships Same Business Day
- Weight:
- 7.10 LBS
- TYPE:
- EXHAUST
- PRODUCT NAME:
- PIPE
- COLOR/FINISH:
- RAW
- MATERIAL:
- CARBON STEEL
- UNITS:
- EACH
- MODEL:
- WORKS
- RIDING STYLE:
- OFF-ROAD
$349.95 -
Pro Circuit Platinum Pipe KTM 250 SX 2019 0851925-O
PRO CIRCUIT
$365.95The Pro Circuit Platinum Pipe delivers measurable gains in mid-range power and throttle response for your KTM 250 SX, while the nickel-coated carbon steel construction resists the corrosion and fatigue that claim lesser exhaust systems. If you're pushing...18201912- SKU:
- 18201912
- Availability:
- Ships Same Business Day
- Weight:
- 7.30 LBS
- COLOR/FINISH:
- NICKEL-PLATED
- MATERIAL:
- CARBON STEEL
- MODEL:
- OFF-ROAD
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- PLATINUM
- PRODUCT NAME:
- PIPE
- TYPE:
- EXHAUST
- UNITS:
- EACH
$365.95
