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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On Sale
FMF Exhaust O-Rings 014891
FMF
MSRP: $9.99Now: $8.00Was: $9.99FMF exhaust O-rings are critical wear items that maintain proper sealing between exhaust components, preventing exhaust leaks that compromise performance and allow unburned gases to escape. Over time, heat cycling and vibration degrade factory O-rings,...18602407- SKU:
- 18602407
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
MSRP: $9.99Now: $8.00Was: $9.99Qty in Cart: 0Quantity:Price:MSRP: $9.99Now: $8.00Was: $9.99Subtotal: -
On Sale
FMF Exhaust O-Rings 014892
FMF
MSRP: $9.99Now: $8.00Was: $9.99FMF exhaust systems demand precision sealing to maintain peak performance and prevent costly exhaust leaks that compromise efficiency and sound quality. These OEM replacement O-rings restore the critical seal integrity between exhaust components,...18602408- SKU:
- 18602408
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
MSRP: $9.99Now: $8.00Was: $9.99Qty in Cart: 0Quantity:Price:MSRP: $9.99Now: $8.00Was: $9.99Subtotal: -
On Sale
FMF Exhaust O-Rings 014896
FMF
MSRP: $9.99Now: $8.00Was: $9.99FMF exhaust O-rings are critical sealing components that prevent exhaust leaks at connection points, maintaining system integrity and peak performance. A compromised seal allows unmetered air into your exhaust stream, throwing off tune and reducing...18602412- SKU:
- 18602412
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
MSRP: $9.99Now: $8.00Was: $9.99Qty in Cart: 0Quantity:Price:MSRP: $9.99Now: $8.00Was: $9.99Subtotal: -
BOLT Exhaust Pipe Spring - 62 mm - 4-Pack 023-20260
BOLT
$15.00Exhaust pipe springs secure your exhaust components during vibration and thermal cycling, preventing movement that can damage gaskets, flanges, and adjacent components. A properly retained exhaust system maintains optimal flow characteristics and extends...18602453- SKU:
- 18602453
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
$15.00 -
BOLT Pipe Mount Kit BET.EX.MNTS
BOLT
$24.99Secure exhaust pipe routing is critical for maintaining system integrity under high-performance conditions. This mount kit eliminates pipe vibration and movement that can lead to premature wear, cracking, or misalignment—issues that compromise both...18602458- SKU:
- 18602458
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
$24.99 -
MOOSE RACING Spec 19 Competition Packing - 500g 14583
MOOSE RACING
$32.95Factory mufflers rarely deliver the acoustic precision needed for track performance, and standard packing materials break down under sustained heat and exhaust pressure. The MOOSE RACING Spec 19 Competition Packing is engineered to maintain structural...18601716- SKU:
- 18601716
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- MODEL:
- COMPETITION SERIES
- RIDING STYLE:
- OFF-ROAD
- WEIGHT METRIC:
- 500 G
- UNITS:
- EACH
- TYPE:
- BULK
- PRODUCT NAME:
- MUFFLER PACKING
$32.95Qty in Cart: 0Quantity:Price:$32.95Subtotal: -
MOOSE RACING Spec 19 Competition Packing - 1000g 14585
MOOSE RACING
$44.95If you're running a competition muffler and dealing with unwanted noise or inconsistent packing material breakdown, the MOOSE RACING Spec 19 Competition Packing delivers the thermal stability and structural integrity your build demands. This bulk...18601718- SKU:
- 18601718
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- COMPETITION SERIES
- PRODUCT NAME:
- MUFFLER PACKING
- TYPE:
- BULK
- WEIGHT METRIC:
- 1000 G
$44.95Qty in Cart: 0Quantity:Price:$44.95Subtotal: -
MOOSE RACING Pillow Packing 16" 2T 14826
MOOSE RACING
$21.95Proper wheel packing is critical for maintaining bearing preload and axle alignment during high-stress racing conditions. The MOOSE RACING Pillow Packing eliminates play in your wheel assembly while protecting bearings from contamination, ensuring...18602223- SKU:
- 18602223
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- LENGTH IMPERIAL:
- 13'
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- 2-STROKE
- TYPE:
- MUFFLER
- PRODUCT NAME:
- PILLOW PACK
- UNITS:
- KIT
$21.95Qty in Cart: 0Quantity:Price:$21.95Subtotal: -
MOOSE RACING Competition Pillow Packing - 15" 14412
MOOSE RACING
$29.95Over time, muffler packing deteriorates from heat cycling and vibration, causing your exhaust to lose sound deadening properties and performance efficiency. The MOOSE RACING Competition Pillow Packing restores your muffler's original acoustic and thermal...18600573- SKU:
- 18600573
- Availability:
- Ships Same Business Day
- Weight:
- 1.51 LBS
- LENGTH IMPERIAL:
- 15'
- RIDING STYLE:
- ATV
- TYPE:
- COMPETITION
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- PILLOW
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
$29.95Qty in Cart: 0Quantity:Price:$29.95Subtotal: -
MOOSE RACING Competition Pillow Packing - 19" 14413
MOOSE RACING
$31.95Exhaust packing degrades over time, causing power loss, increased noise, and poor throttle response. This 19" MOOSE Racing Competition Pillow Packing restores your muffler's acoustic and performance characteristics without requiring a full replacement. A...18600574- SKU:
- 18600574
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- LENGTH IMPERIAL:
- 19'
- PRODUCT NAME:
- PILLOW
- RIDING STYLE:
- ATV
- TYPE:
- COMPETITION
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$31.95Qty in Cart: 0Quantity:Price:$31.95Subtotal: -
MOOSE RACING Muffler Sleeve Core - 15" 14289
MOOSE RACING
$33.95If you're rebuilding or maintaining a performance muffler, packing material degradation is inevitable—but the repack intervals don't have to be. This MOOSE RACING muffler sleeve core replaces conventional fiber packing with a dual-layer stainless...18600473- SKU:
- 18600473
- Availability:
- Ships Same Business Day
- Weight:
- 0.48 LBS
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- LENGTH IMPERIAL:
- 15'
- PRODUCT NAME:
- SLEEVE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- STAINLESS WOOL
- TYPE:
- BAFFLE CORE
$33.95Qty in Cart: 0Quantity:Price:$33.95Subtotal: -
AKRAPOVIC Spark Arrestor - SA002 P-SA002
AKRAPOVIC
$69.25The AKRAPOVIĆ Spark Arrestor (SA002) is a direct replacement element designed to maintain optimal exhaust flow and emissions compliance in your AKRAPOVIĆ muffler system. This OEM-equivalent component ensures your performance exhaust continues to meet...18600977- SKU:
- 18600977
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- ARRESTOR
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SPARK ARRESTOR SCREEN INSERT
- UNITS:
- EACH
$69.25Qty in Cart: 0Quantity:Price:$69.25Subtotal: -
AKRAPOVIC End Cap - EC186 V-EC186
AKRAPOVIC
$156.95If your Akrapović exhaust system has suffered damage or wear to the end cap, replacing it is essential to maintain both aesthetic appeal and proper exhaust flow characteristics. The OEM EC186 end cap restores your system to factory specifications without...18600979- SKU:
- 18600979
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- END CAP
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CARBON FIBER
$156.95Qty in Cart: 0Quantity:Price:$156.95Subtotal: -
AKRAPOVIC Noise Damper - TUV062/1 V-TUV062/1
AKRAPOVIC
$60.95If you're running an Akrapovic slip-on muffler but need to dial back the decibel levels for street legality or track noise restrictions, this noise damper insert is the direct solution. It reduces exhaust noise without sacrificing the performance gains...18600983- SKU:
- 18600983
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- INSERT
- TYPE:
- NOISE DAMPER INSERT
$60.95Qty in Cart: 0Quantity:Price:$60.95Subtotal: -
AKRAPOVIC Noise Damper - TUV062/TI/1 V-TUV062/TI/1
AKRAPOVIC
$83.95If you're running an Akrapovic slip-on muffler but want to dial back the aggression, this noise damper insert delivers measurable sound reduction without sacrificing flow characteristics. The internal absorption technology lets you keep your premium...18600984- SKU:
- 18600984
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- INSERT
- UNITS:
- EACH
- TYPE:
- NOISE DAMPER INSERT
- RIDING STYLE:
- OFF-ROAD
$83.95 -
AKRAPOVIC End Cap - EC206 V-EC206
AKRAPOVIC
$156.95If your Akrapović exhaust system has suffered impact damage or normal wear, a compromised end cap undermines both aesthetic appeal and exhaust flow efficiency. The EC206 V-EC206 end cap restores your system to factory specifications, ensuring optimal...18600981- SKU:
- 18600981
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MATERIAL:
- CARBON FIBER
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- END CAP
- UNITS:
- EACH
$156.95Qty in Cart: 0Quantity:Price:$156.95Subtotal: -
AKRAPOVIC End Cap - EC207 V-EC207
AKRAPOVIC
$156.95If your Akrapovic exhaust system has sustained damage or wear to the end cap, replacement is essential to maintain both aesthetic appeal and exhaust flow integrity. The EC207 V-EC207 end cap restores your system to factory performance specifications...18600982- SKU:
- 18600982
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MATERIAL:
- CARBON FIBER
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- END CAP
$156.95 -
AKRAPOVIC Noise Damper - TUV132 V-TUV132
AKRAPOVIC
$60.95If you've upgraded to an Akrapovic slip-on muffler but find the aggressive exhaust note too loud for street driving or local noise restrictions, this noise damper is a practical solution that preserves performance while bringing sound levels down to...18600985- SKU:
- 18600985
- Availability:
- Ships Same Business Day
- Weight:
- 0.34 LBS
- PRODUCT NAME:
- INSERT
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- NOISE DAMPER INSERT
$60.95Qty in Cart: 0Quantity:Price:$60.95Subtotal: -
BOLT Exhaust Hardware Kit EU.EX.50CC
BOLT
$20.99A quality exhaust hardware kit is essential for maintaining a secure, leak-free connection between your exhaust components—poor sealing leads to performance loss and unwanted noise. This BOLT EU.EX.50CC kit provides model-specific components engineered...18601273- SKU:
- 18601273
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- HARDWARE KIT
- TYPE:
- EXHAUST
$20.99 -
FMF End Cap - Stainless Steel - Slash Cut - PC4/Q4 040635
FMF
$34.99If your 4-stroke exhaust system is showing signs of wear or you've damaged your end cap during aggressive riding, a quality replacement is essential to maintain backpressure and exhaust flow dynamics. The FMF stainless steel end cap restores your...18600501- SKU:
- 18600501
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- END CAP
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- REPLACEMENT
- MATERIAL:
- STAINLESS STEEL
- MODEL:
- POWERCORE 4
- UNITS:
- EACH
- RIDING STYLE:
- UTV
- END CAP STYLE:
- SLASH-CUT
- MODEL:
- Q4
- RIDING STYLE:
- ATV
$34.99
