Dirt Bike Exhaust Replacement Parts
Dirt Bike Exhaust Replacement Parts: O-Rings, Springs & Packing for FMF & Moose at JJ Motorsports
Keep your dirt bike's exhaust system in top shape with premium replacement parts from JJ Motorsports, designed for easy maintenance and peak performance in motocross, enduro, and trail riding. Our selection includes durable O-rings, heavy-duty springs, and high-performance packing materials for secure seals, vibration resistance, and heat insulation. Compatible with FMF and Moose Racing mufflers on Honda CRF, Yamaha YZ/WR, KTM SX/EXC, and more, these OEM-quality components ensure leak-free operation, reduced noise, and long-lasting durability in dusty, high-heat conditions. From FMF's silicone O-rings for end cap seals to Moose's 95mm springs and Spec 19 packing for quick re-packs, refresh your exhaust without the hassle of full replacements.
Shop trusted brands like FMF and Moose Racing for race-proven quality. Explore related categories such as dirt bike silencers and mufflers for full systems or dirt bike exhaust for headers and tips.
Top Dirt Bike Exhaust Replacement Parts
- FMF Exhaust O-Rings 014893 – Silicone O-ring set for FMF muffler end caps; ensures airtight seals and vibration resistance for reliable performance.
- Moose Racing Exhaust Springs 95mm 495-9500 – Heavy-duty 95mm springs for secure muffler mounting; zinc-plated for corrosion resistance and easy installation.
- Moose Racing Spec 19 Competition Packing 750g 14584 – High-temp fiberglass packing for 2-stroke mufflers; 750g jar provides multiple re-packs for sustained sound and flow.
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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MOOSE RACING Competition Muffler Packing - 500g 14647
MOOSE RACING
$25.95Stock muffler packing deteriorates under sustained heat and high RPMs, leading to performance loss and unwanted noise. MOOSE Racing Competition Muffler Packing delivers the same premium material trusted in professional repack cartridges—engineered to...18600060- SKU:
- 18600060
- Availability:
- Ships Same Business Day
- Weight:
- 1.14 LBS
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ATV
- TYPE:
- COMPETITION
- UNITS:
- EACH
- WEIGHT METRIC:
- 500 G
- PRODUCT NAME:
- MUFFLER PACKING
- MATERIAL:
- HIGH-TEMPERATURE FABRIC
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
$25.95Qty in Cart: 0Quantity:Price:$25.95Subtotal: -
MOOSE RACING Universal Exhaust Re-Pack Kit 14234
MOOSE RACING
$49.95Exhaust packing deteriorates over time, causing unwanted back pressure that kills horsepower—not the other way around. A blown-out silencer forces exhaust gases to turbulate, robbing your engine of the performance gains you've already paid for. This...18600037- SKU:
- 18600037
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- PRODUCT NAME:
- MUFFLER PACKING
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
$49.95 -
MOOSE RACING Rivet Kit with Bit - 12-3/16" 14218
MOOSE RACING
$9.95Whether you're fabricating a custom chassis, repairing bodywork, or assembling aluminum components, having the right rivets and tools on hand keeps your build moving without delays. This MOOSE RACING kit gives you everything needed for clean,...18600176- SKU:
- 18600176
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- COLOR/FINISH:
- CORROSION-RESISTANT COATING
- MATERIAL:
- STEEL
- PRODUCT NAME:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- RIVET
- UNITS:
- KIT
- RIDING STYLE:
- ATV
- RIDING STYLE:
- UTV
$9.95Qty in Cart: 0Quantity:Price:$9.95Subtotal: -
Pro Circuit Carbon Fiber End Cap for Ti-5/Ti-6 4.5" 1.5" Hole PC4022-0003
PRO CIRCUIT
$132.95If you're running a Ti-5 or Ti-6 exhaust system, the Pro Circuit Carbon Fiber End Cap delivers a measurable upgrade in both weight reduction and acoustic refinement. The integrated Quiet Core and Quiet Tips technology let you dial in a more controlled...18600811- SKU:
- 18600811
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- END CAP STYLE:
- CONICAL
- MODEL:
- TI-6
- OUTSIDE DIAMETER IMPERIAL:
- 4-1/2'
- STYLE:
- ROUND
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- END CAP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- CARBON FIBER
- MODEL:
- TI-5
$132.95 -
MOOSE RACING Competition Muffler Packing - 250g 14646
MOOSE RACING
$18.95A quality muffler repack is one of the quickest ways to restore performance exhaust flow and reduce unwanted backpressure in your system. MOOSE Racing's competition-grade packing material outlasts standard fiberglass alternatives by a significant margin,...M702- SKU:
- M702
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- MUFFLER PACKING
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- WEIGHT METRIC:
- 250 G
- MATERIAL:
- HIGH-TEMPERATURE FABRIC
- TYPE:
- COMPETITION
$18.95 -
MOOSE RACING Exhaust Springs - 63mm 495-6300
MOOSE RACING
$18.95Exhaust spring failure can compromise your header seal and allow exhaust gases to escape before your scavenging system can work efficiently. The MOOSE RACING 495-6300 eliminates binding issues that prematurely wear standard springs, keeping your exhaust...M7709- SKU:
- M7709
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- EXHAUST SPRING
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- UNITS:
- 2 PACK
- RIDING STYLE:
- STREET
- SPRING LENGTH - STATIC METRIC:
- 63 MM
- MATERIAL:
- STAINLESS STEEL
$18.95 -
MOOSE RACING Exhaust Springs 495-6000
MOOSE RACING
$18.95Exhaust springs are a critical wear item that directly impacts exhaust system stability and longevity. A worn or broken spring forces your exhaust to sag, creating stress on hangers, gaskets, and welds—leading to leaks, rattles, and potential component...M7715- SKU:
- M7715
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- ATV
- SPRING LENGTH - STATIC METRIC:
- 60 MM
- TYPE:
- EXHAUST
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
- UNITS:
- PAIR
$18.95 -
MOOSE RACING Muffler Sleeve Core - 19" 14290
MOOSE RACING
$42.95Stock muffler packing breaks down quickly, forcing frequent and costly repacks that compromise your exhaust sound and engine performance. The MOOSE RACING Muffler Sleeve Core replaces traditional packing fiber with a dual-layer stainless steel...18600474- SKU:
- 18600474
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 19'
- MATERIAL:
- STAINLESS WOOL
- PRODUCT NAME:
- SLEEVE
- TYPE:
- BAFFLE CORE
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- UTV
$42.95Qty in Cart: 0Quantity:Price:$42.95Subtotal: -
CYCLE PERFORMANCE PROD. 1x11x16 Muffler Packing CPP/9092
CYCLE PERFORMANCE PROD.
$49.951” X 11” X16”, Made from crushed volcanic fiber, Temperature resistance: 1800°F, Made in the U.S.A.18601822- SKU:
- 18601822
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- MUFFLER PACKING
- TYPE:
- COMPETITION
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$49.95Qty in Cart: 0Quantity:Price:$49.95Subtotal: -
AKRAPOVIC End Cap - EC52 V-EC52
AKRAPOVIC
$155.95If your Akrapović exhaust system has sustained damage or wear to the end cap, replacement is essential to maintain both aesthetic appearance and exhaust flow integrity. The EC52 V-EC52 end cap restores your system to factory specifications, ensuring...18600396- SKU:
- 18600396
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- END CAP
- UNITS:
- EACH
- MATERIAL:
- CARBON FIBER
$155.95 -
BOLT Mounting Hardware Kit - KTM EU.EX.MNTS
BOLT
$24.99A quality exhaust mounting system is fundamental to any KTM 2-stroke build—poor mounts lead to vibration, noise, and potential pipe damage. The BOLT Mounting Hardware Kit delivers OEM-spec reliability with all necessary components in one package,...18601272- SKU:
- 18601272
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- FASTENER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$24.99 -
BOLT Exhaust Hardware Kit EU.EX.65-85CC
BOLT
$26.99A quality exhaust system is only as reliable as its fastening components. This hardware kit ensures leak-free connections and vibration-resistant mounting throughout your exhaust system, eliminating performance loss from loose joints and exhaust leaks...18601274- SKU:
- 18601274
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- HARDWARE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- EXHAUST
$26.99 -
BOLT Exhaust Hardware Kit EU.EX.105-150CC
BOLT
$26.99A quality exhaust system is only as reliable as its components—and weak hardware leads to leaks, vibration, and performance loss. This BOLT Exhaust Hardware Kit ensures your exhaust maintains a proper seal and stays secured under high-temperature...18601275- SKU:
- 18601275
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- HARDWARE KIT
$26.99 -
BOLT Exhaust Hardware Kit YZ.EX.125CC
BOLT
$26.99A quality exhaust system depends on reliable hardware to maintain proper sealing, vibration dampening, and longevity. This BOLT Exhaust Hardware Kit supplies the OEM-equivalent components you need for model-specific fitment and performance, eliminating...18601277- SKU:
- 18601277
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- EXHAUST
- PRODUCT NAME:
- HARDWARE KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$26.99 -
BOLT Exhaust Hardware Kit YZ.EX.250CC
BOLT
$26.99A quality exhaust system is only as reliable as its fastening components. This hardware kit ensures your exhaust maintains a secure, vibration-resistant seal throughout aggressive riding sessions, preventing leaks that compromise performance and...18601278- SKU:
- 18601278
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- HARDWARE KIT
- TYPE:
- EXHAUST
$26.99 -
BOLT Exhaust Hardware Kit EU.EX.200-300CC
BOLT
$26.99A quality exhaust system is only as reliable as its connection points. This hardware kit eliminates leaks, vibration, and premature component failure by providing OEM-spec fasteners and seals engineered specifically for your machine. Whether you're...18601276- SKU:
- 18601276
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- HARDWARE KIT
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- EXHAUST
$26.99 -
LEOVINCE Clamp - Scooter 304051501R
LEOVINCE
$37.95A quality muffler clamp is essential for maintaining a secure exhaust connection and preventing vibration-induced rattles or exhaust leaks. The LEOVINCE Clamp ensures reliable fastening of your scooter's muffler to the exhaust system, protecting your...18600850- SKU:
- 18600850
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- CLAMP
- TYPE:
- EXHAUST CLAMP
- MATERIAL:
- ALUMINUM
- MODEL:
- SCOOTER
- RIDING STYLE:
- STREET
$37.95 -
On Sale
LA CHOPPERS 24" Baffle with Packing - 1.625" LA-1216-24P
LA CHOPPERS
MSRP: $52.95Now: $34.00Was: $52.95If your exhaust system is louder than intended or your baffle is degraded, this replacement baffle with packing restores both acoustics and exhaust flow efficiency. The LA CHOPPERS 24" baffle delivers precise noise reduction while maintaining the...18600615- SKU:
- 18600615
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- LENGTH IMPERIAL:
- 24'
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- BAFFLE
- SHAPE:
- ROUND
- TYPE:
- EXHAUST
- UNITS:
- EACH
- OUTSIDE DIAMETER IMPERIAL:
- 1-5/8'
- STYLE:
- UNIVERSAL
- RIDING STYLE:
- STREET
MSRP: $52.95Now: $34.00Was: $52.95Qty in Cart: 0Quantity:Price:MSRP: $52.95Now: $34.00Was: $52.95Subtotal: -
FMF End Cap - Stainless Steel - Straight Cut - PC4/Q4 040634
FMF
$34.99A worn or damaged exhaust end cap compromises both aesthetics and performance—it can disrupt exhaust flow, allow unwanted debris into your system, and detract from a professional setup. This FMF stainless steel end cap delivers a clean, finished look...18600500- SKU:
- 18600500
- Availability:
- Ships Same Business Day
- Weight:
- 0.29 LBS
- MODEL:
- Q4
- RIDING STYLE:
- UTV
- END CAP STYLE:
- STRAIGHT-CUT
- PRODUCT NAME:
- END CAP
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4
- STYLE:
- REPLACEMENT
$34.99 -
FMF RCT End Cap - Stainless Steel 040641
FMF
$49.99A damaged or corroded end cap compromises your exhaust system's structural integrity and aerodynamic efficiency. The FMF RCT End Cap delivers a precision-engineered replacement in stainless steel, engineered to withstand extreme thermal cycles and...18600561- SKU:
- 18600561
- Availability:
- Ships Same Business Day
- Weight:
- 0.72 LBS
- MATERIAL:
- STAINLESS STEEL
- OUTSIDE DIAMETER IMPERIAL:
- 4'
- TYPE:
- EXHAUST
- END CAP STYLE:
- EURO
- PRODUCT NAME:
- END CAP
- UNITS:
- KIT
- MODEL:
- FACTORY 4.1 RCT
- RIDING STYLE:
- OFF-ROAD
$49.99
