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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FMF Spring and O-Ring Kit 011314
FMF
$12.99Exhaust system performance depends on sealed, reliable connections—and worn springs and O-rings compromise flow and durability. The FMF Spring and O-Ring Kit 011314 restores critical sealing integrity in your exhaust piping, preventing leaks that rob...FMF011314- SKU:
- FMF011314
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- TYPE:
- EXHAUST
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- O-RING
$12.99 -
FMF Spring and O-Ring Kit 011313
FMF
$12.99Exhaust system sealing is critical to maintaining peak performance and preventing leaks that compromise horsepower and efficiency. The FMF Spring and O-Ring Kit 011313 provides OEM-quality replacement components for your exhaust pipe connections,...FMF011313- SKU:
- FMF011313
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- STEEL
- TYPE:
- EXHAUST
- PRODUCT NAME:
- O-RING
$12.99 -
FMF Spring and O-Ring Kit 011312
FMF
$12.99Exhaust sealing integrity directly impacts engine performance and longevity. Over time, factory spring and o-ring assemblies degrade under extreme heat cycles, leading to exhaust leaks that compromise power output and increase emissions. The FMF Spring...FMF011312- SKU:
- FMF011312
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- PRODUCT NAME:
- O-RING
- TYPE:
- EXHAUST
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$12.99 -
FMF Spring and O-Ring Kit 011311
FMF
$12.99Exhaust sealing degradation compromises both performance and durability—worn springs and o-rings allow exhaust leaks that reduce scavenging efficiency and increase noise levels. The FMF Spring and O-Ring Kit 011311 restores proper joint compression and...FMF011311- SKU:
- FMF011311
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- EXHAUST
- UNITS:
- KIT
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- O-RING
$12.99 -
FMF Spring and O-Ring Kit 011310
FMF
$12.99Exhaust sealing integrity directly impacts performance, efficiency, and longevity of your system. The FMF Spring and O-Ring Kit 011310 replaces worn or damaged sealing components that deteriorate under thermal cycling and exhaust pressure, restoring a...FMF011310- SKU:
- FMF011310
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- EXHAUST
- MATERIAL:
- RUBBER
- UNITS:
- KIT
$12.99 -
FMF Spring and O-Ring Kit 011309
FMF
$12.99Exhaust system performance depends on reliable sealing and proper spring tension—wear and degradation in these components directly impacts flow efficiency and system integrity. The FMF Spring and O-Ring Kit 011309 provides OEM-quality replacement parts...FMF011309- SKU:
- FMF011309
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- O-RING
- TYPE:
- EXHAUST
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$12.99 -
FMF Spring and O-Ring Kit 011308
FMF
$12.99Exhaust sealing integrity directly impacts your engine's performance and longevity. This FMF Spring and O-Ring Kit restores critical seals in your exhaust system, preventing unwanted leaks that compromise horsepower and increase emissions. Whether you're...FMF011308- SKU:
- FMF011308
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- O-RING
- TYPE:
- EXHAUST
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$12.99 -
FMF Spring and O-Ring Kit 011307
FMF
$12.99Exhaust sealing integrity directly impacts performance and longevity. Over time, spring tension weakens and O-rings degrade, allowing exhaust leaks that compromise power delivery and create unwanted noise. The FMF Spring and O-Ring Kit 011307 restores...FMF011307- SKU:
- FMF011307
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- EXHAUST
- UNITS:
- KIT
$12.99 -
FMF Colorways Logo Kit - Orange 014850
FMF
$17.99Make your bike instantly recognizable on the track or street with FMF's Colorways Logo Kit in bold orange. This direct-fit graphic package gives your machine that factory-fresh aesthetic without the hefty price tag of a complete respray. Whether you're...43202455- SKU:
- 43202455
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- BLUE
- PRODUCT NAME:
- DECAL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- COLORWAYS 4.1
- UNITS:
- EACH
- BASE COLOR:
- YELLOW
- GRAPHIC:
- FMF LOGO
- TYPE:
- EXHAUST
- BASE COLOR:
- BLUE
- COLOR/FINISH:
- RED
- COLOR/FINISH:
- WHITE
- COLOR/FINISH:
- YELLOW
$17.99Qty in Cart: 0Quantity:Price:$17.99Subtotal: -
AKRAPOVIC Universal Heat Shield Fit Kit P-HF95/1
AKRAPOVIC
$11.95Exhaust heat shields are non-negotiable for protecting undercarriage components, wiring, and fuel lines from extreme temperatures generated by high-performance exhausts. The AKRAPOVIC Universal Heat Shield Fit Kit delivers reliable thermal management...18600886- SKU:
- 18600886
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- HEAT SHIELD
- PRODUCT NAME:
- FITTING KIT
$11.95 -
DG PERFORMANCE Repack Kit - MX Silencer 98-1000
DG PERFORMANCE
$23.99If your MX silencer's exhaust note has become too aggressive or you're looking to fine-tune performance characteristics, a repack kit is essential maintenance. Over time, packing material degrades, causing increased noise levels and potential performance...D981000- SKU:
- D981000
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- MODEL:
- MX
- MATERIAL:
- FIBERGLASS
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- LENGTH IMPERIAL:
- 15'
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$23.99 -
WSM Sea-Doo Exhaust Hose 011-430
WSM
$16.46A deteriorating exhaust hose compromises engine performance and creates safety hazards on the water. The WSM Sea-Doo Exhaust Hose 011-430 is a direct OEM replacement designed to restore proper exhaust flow and maintain your engine's thermal efficiency...18600540- SKU:
- 18600540
- Availability:
- Ships Same Business Day
- Weight:
- 0.39 LBS
- LENGTH IMPERIAL:
- 3-1/2'
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- EXHAUST
- UNITS:
- EACH
- PRODUCT NAME:
- HOSE
$16.46 -
WSM Sea-Doo Exhaust Hose 011-420
WSM
$24.76A compromised exhaust hose restricts backpressure flow and degrades engine performance on your Sea-Doo watercraft. The WSM 011-420 is an OEM-equivalent replacement that restores proper exhaust evacuation, preventing heat buildup in the engine bay and...18600659- SKU:
- 18600659
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- HOSE
- TYPE:
- EXHAUST
- RIDING STYLE:
- WATERCRAFT
- LENGTH IMPERIAL:
- 3.1'
- UNITS:
- EACH
$24.76 -
WSM Exhaust Bushings 011-515
WSM
$5.34Exhaust vibration and movement can compromise manifold alignment, damage surrounding components, and introduce unwanted noise into your cabin. The WSM Exhaust Bushings 011-515 isolate your exhaust system with precision-engineered support, maintaining...18600660- SKU:
- 18600660
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- BUSHING
- UNITS:
- PAIR
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- EXHAUST
$5.34 -
FMF 4-Stroke Pillow Packing 015302
FMF
$31.99Exhaust heat can degrade performance components and create safety hazards in your bike's engine bay. FMF's 4-Stroke Pillow Packing provides proven thermal insulation that keeps your exhaust can operating at optimal temperatures while protecting...18600828- SKU:
- 18600828
- Availability:
- Ships Same Business Day
- Weight:
- 1.31 LBS
- MATERIAL:
- FIBERGLASS
- STYLE:
- 4-STROKE
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- MUFFLER PACKING
$31.99 -
FMF Premier 2-Stroke Packing 015301
FMF
$27.99If you're running a 2-stroke MX bike that demands durability over silence, the FMF Premier 2-Stroke Packing delivers the heat resistance your exhaust system needs to survive intense riding conditions. This is genuine OEM-equivalent packing that maintains...18600827- SKU:
- 18600827
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- 2-STROKE
- RIDING STYLE:
- UTV
- MATERIAL:
- FIBERGLASS
- PRODUCT NAME:
- MUFFLER PACKING
- COLOR/FINISH:
- WHITE
- MODEL:
- PREMIER
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$27.99 -
FMF 4-Stroke Packing 010590
FMF
$14.99Exhaust silencer performance degrades over time as internal packing material breaks down, leading to increased noise and potential backpressure issues. The FMF 4-Stroke Packing 010590 restores your silencer to OEM specifications with genuine...FMF12004- SKU:
- FMF12004
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- RIDING STYLE:
- ATV
- STYLE:
- 4-STROKE
- UNITS:
- EACH
- MATERIAL:
- FIBERGLASS
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- WHITE
- PRODUCT NAME:
- MUFFLER PACKING
- RIDING STYLE:
- UTV
$14.99 -
HELIX Exhaust Springs - Zinc - 90 mm 495-9002
HELIX
$7.95Exhaust systems experience constant thermal expansion and vibration—without proper support, your exhaust components will shift, crack, and ultimately fail prematurely. HELIX Exhaust Springs provide reliable, maintenance-free suspension that absorbs...18602388- SKU:
- 18602388
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
$7.95Qty in Cart: 0Quantity:Price:$7.95Subtotal: -
FMF Exhaust O-Rings 014887
FMF
$9.99Exhaust leaks compromise both performance and reliability, robbing your engine of power while creating unnecessary heat and noise. FMF O-rings (MPN 014887) provide the precise seal your exhaust system demands, preventing pressurized gases from escaping...18602403- SKU:
- 18602403
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
$9.99Qty in Cart: 0Quantity:Price:$9.99Subtotal: -
FMF Exhaust O-Rings 014888
FMF
$9.99A proper exhaust seal is foundational to maintaining peak performance and preventing exhaust leaks that compromise power delivery and fuel efficiency. FMF Exhaust O-Rings are engineered to maintain a consistent, reliable seal across thermal cycles,...18602404- SKU:
- 18602404
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
$9.99Qty in Cart: 0Quantity:Price:$9.99Subtotal:
