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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Pro Circuit Ti-6 Pro Exhaust System KTM 450 SX-F 2022-2025 0352245FP
PRO CIRCUIT
$1,396.95The Pro Circuit Ti-6 Pro Exhaust System is engineered to unlock measurable gains in horsepower and torque across the full RPM range of your KTM 450 SX-F, delivering the responsiveness competitive riders demand. By reducing backpressure and optimizing...18202028- SKU:
- 18202028
- Availability:
- Ships Same Business Day
- Weight:
- 11.40 LBS
$1,396.95 -
Pro Circuit Ti-6 Exhaust System KTM 250 SX-F 2023-2025 0352225F
PRO CIRCUIT
$1,396.95If you're running a 250 SX-F in competitive closed-course or off-road racing, every gram and every decibel counts. The Pro Circuit Ti-6 Exhaust System delivers measurable power gains through optimized flow dynamics while keeping your bike compliant with...18202021- SKU:
- 18202021
- Availability:
- Ships Same Business Day
- Weight:
- 11.50 LBS
$1,396.95 -
Pro Circuit Ti-6 Pro Exhaust System KTM 250 SX-F 2022-2024 0352225FP
PRO CIRCUIT
$1,396.95If you're running a 250 SX-F and serious about maximizing power delivery on the track or trail, a properly engineered exhaust system isn't optional—it's essential. The Pro Circuit Ti-6 Pro unlocks measurable gains in mid-range torque and top-end...18202026- SKU:
- 18202026
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$1,396.95 -
On Sale
FMF Gold Series Fatty* Pipe 025297
FMF
MSRP: $299.99Now: $255.00Was: $299.99If you're looking to unlock more usable power across the RPM range while gaining finer throttle control, the FMF Gold Series Fatty Pipe delivers the reliability that serious riders demand. This exhaust component is engineered to optimize flow...18202036- SKU:
- 18202036
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
MSRP: $299.99Now: $255.00Was: $299.99 -
Pro Circuit Ti-6 Exhaust System for Honda CRF450R 2019-2026 0322445F
PRO CIRCUIT
$1,536.95The Pro Circuit Ti-6 Exhaust System delivers measurable gains in power and torque across the entire RPM band while trimming rotational mass—critical for both track performance and handling responsiveness. Constructed from premium titanium, this system...18202043- SKU:
- 18202043
- Availability:
- Ships Same Business Day
- Weight:
- 12.00 LBS
$1,536.95 -
Pro Circuit T-6 Exhaust System Stainless Steel 2024 Kawasaki KX 450 0122445G
PRO CIRCUIT
$1,198.95The Pro Circuit T-6 exhaust system unlocks measurable gains in horsepower and torque while shedding unnecessary weight—critical improvements for both track performance and trail responsiveness on your 2024 Kawasaki KX 450. A stainless steel construction...18202042- SKU:
- 18202042
- Availability:
- Ships Same Business Day
- Weight:
- 13.65 LBS
$1,198.95 -
Pro Circuit Ti-6 Pro Titanium Exhaust System for 2024 Kawasaki KX450 0322445FP
PRO CIRCUIT
$1,536.95The Pro Circuit Ti-6 Pro Titanium Exhaust System delivers measurable gains in horsepower and throttle response while trimming unsprung weight that directly improves handling and acceleration. If you're serious about maximizing your 2024 Kawasaki KX450's...18202044- SKU:
- 18202044
- Availability:
- Ships Same Business Day
- Weight:
- 11.60 LBS
$1,536.95 -
On Sale
FMF Factory 4.1 RCT Exhaust System - Titanium - Carbon End Cap 042406
FMF
MSRP: $1,374.99Now: $1,169.00Was: $1,374.99The FMF Factory 4.1 RCT exhaust system delivers measurable horsepower and torque gains while shedding unnecessary weight—critical advantages whether you're chasing lap times or pushing peak performance on a closed course. Titanium construction paired...18202046- SKU:
- 18202046
- Availability:
- Ships Same Business Day
- Weight:
- 11.70 LBS
MSRP: $1,374.99Now: $1,169.00Was: $1,374.99 -
On Sale
FMF Factory 4.1 RCT Exhaust System - Aluminum - Stainless Steel Header - Carbon Fiber End Cap 044477
FMF
MSRP: $1,074.99Now: $914.00Was: $1,074.99The FMF Factory 4.1 RCT exhaust system delivers measurable power gains through advanced resonance chamber technology while reducing unsprung weight and improving chassis balance. Its compact design and aerospace-grade construction make it the choice for...18202047- SKU:
- 18202047
- Availability:
- Ships Same Business Day
- Weight:
- 9.50 LBS
MSRP: $1,074.99Now: $914.00Was: $1,074.99 -
On Sale
FMF Factory 4.1 RCT Exhaust System - Titanium - Carbon Fiber End Cap 044478
FMF
MSRP: $1,374.99Now: $1,169.00Was: $1,374.99If you're chasing lap times on a closed course, rotating mass matters—and the FMF Factory 4.1 RCT moves the muffler closer to your motor to centralize weight where it counts. The titanium construction combined with aerospace-grade materials delivers...18202048- SKU:
- 18202048
- Availability:
- Ships Same Business Day
- Weight:
- 10.45 LBS
MSRP: $1,374.99Now: $1,169.00Was: $1,374.99 -
Pro Circuit Works Pipe Exhaust System KTM 65 SX 2024-2025 0752465
PRO CIRCUIT
$322.95The Pro Circuit Works Pipe exhaust system is engineered to maximize exhaust scavenging and engine breathing on your KTM 65 SX, directly translating to sharper throttle response and improved power delivery in the powerband. Hand-welded construction and...18220552- SKU:
- 18220552
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
$322.95 -
Pro Circuit Platinum Pipe Exhaust System KTM 65 SX 2024-2025 0852465
PRO CIRCUIT
$337.95The Pro Circuit Platinum Pipe Exhaust System delivers measurable gains in exhaust scavenging and engine efficiency for your KTM 65 SX, translating to sharper throttle response and improved power delivery across the rev range. Hand-welded AKDQ carbon...18220553- SKU:
- 18220553
- Availability:
- Ships Same Business Day
- Weight:
- 2.81 LBS
$337.95 -
AKRAPOVIC Racing Line Exhaust System - Stainless Steel/Titanium - KX 250 S-K2MR9-BNTA
AKRAPOVIC
$1,188.00Track-focused performance demands an exhaust system engineered for both maximum power delivery and minimal weight penalty. The Akrapović Racing Line combines handcrafted precision with premium materials to unlock measurable horsepower gains while...18202071- SKU:
- 18202071
- Availability:
- Ships Same Business Day
- Weight:
- 10.30 LBS
$1,188.00 -
AKRAPOVIC Evolution Line Exhaust System - Titanium/Titanium - KX 250 S-K2MET9-BNTA
AKRAPOVIC
$1,714.95If you're running a KX 250 on the track, weight savings and peak power delivery are non-negotiable. The Akrapović Evolution Line exhausts system delivers both—shedding unnecessary mass while unlocking additional horsepower through optimized scavenging...18202072- SKU:
- 18202072
- Availability:
- Ships Same Business Day
- Weight:
- 10.30 LBS
$1,714.95 -
FMF Factory 4.1 RCT Exhaust System with Carbon Cap - MegaBomb Header - Stainless Steel - KX 250 042413
FMF
$1,049.99The FMF Factory 4.1 RCT exhaust system delivers measurable power gains while reducing unsprung weight through a compact, centralized design that minimizes crash damage risk. By incorporating Resonance Chamber Technology both internally and externally,...18202083- SKU:
- 18202083
- Availability:
- Ships Same Business Day
- Weight:
- 13.10 LBS
$1,049.99 -
FMF Factory 4.1 RCT Exhaust System with Carbon Cap - MegaBomb Header - Titanium - KX 250 042414
FMF
$1,374.99The Factory 4.1 RCT delivers measurable power gains and weight savings through FMF's proprietary Resonance Chamber Technology, engineered specifically for the KX 250 to optimize exhaust scavenging and midrange response. By centralizing mass closer to the...18202084- SKU:
- 18202084
- Availability:
- Ships Same Business Day
- Weight:
- 11.80 LBS
$1,374.99Qty in Cart: 0Quantity:Price:$1,374.99Subtotal: -
AKRAPOVIC Evolution Line Exhaust System - Titanium - CRF450R/CRF450RX S-H4E1-FDHLT
AKRAPOVIC
$1,973.35If you're running a CRF450R or CRF450RX on the circuit, exhaust flow directly impacts throttle response, power delivery, and race-day consistency. The AKRAPOVIC Evolution Line titanium system cuts through the compromises of stock engineering—delivering...18202089- SKU:
- 18202089
- Availability:
- Ships Same Business Day
- Weight:
- 10.30 LBS
$1,973.35Qty in Cart: 0Quantity:Price:$1,973.35Subtotal: -
Pro Circuit T-4 Exhaust Kawasaki KLX125 2003-2016 4S03125
PRO CIRCUIT
$349.95The PRO CIRCUIT T-4 Exhaust delivers measurable gains in throttle response and power output, backed by extensive dyno and track testing. If you're running a KLX125 and want to unlock its full potential without compromising reliability, this is the system...4S03125- SKU:
- 4S03125
- Availability:
- Ships Same Business Day
- Weight:
- 3.88 LBS
- DESIGN/CONFIGURATION:
- 1-INTO-1 SYSTEM
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- T4
- END CAP MATERIAL:
- STAINLESS STEEL
- MUFFLER MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- EXHAUST SYSTEM
- TYPE:
- FULL SYSTEM
- RIDING STYLE:
- OFF-ROAD
- END CAP STYLE:
- CONICAL
- MATERIAL:
- ALUMINUM
- MUFFLER COLOR/FINISH:
- BRUSHED
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$349.95 -
Pro Circuit T-4 Exhaust Honda CRF70F 2004-2012 4H00070
PRO CIRCUIT
$370.95The Pro Circuit T-4 Exhaust delivers measurable gains in throttle response and power delivery for your Honda CRF70F, engineered through extensive dyno and track testing to ensure real-world performance. Whether you're competing on closed courses or...4H00070- SKU:
- 4H00070
- Availability:
- Ships Same Business Day
- Weight:
- 3.69 LBS
$370.95 -
Pro Circuit T-4 Exhaust System for Honda XR100R 1985-2000 4H85080
PRO CIRCUIT
$370.95The Pro Circuit T-4 Exhaust System delivers measurable improvements in throttle response and acceleration for the Honda XR100R, making it the choice for racers who demand repeatability across track and dyno environments. This system combines proven...4H00080- SKU:
- 4H00080
- Availability:
- Ships Same Business Day
- Weight:
- 3.28 LBS
$370.95
