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
-
MOOSE RACING Exhaust Springs 495-9000
MOOSE RACING
$18.95Exhaust springs are a critical fastening component that's often overlooked until failure occurs—and when they break, you're looking at loose exhaust components, vibration, and potential damage to your exhaust system. The MOOSE RACING 495-9000 replaces...M7718- SKU:
- M7718
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- TYPE:
- EXHAUST
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- OFF-ROAD
- SPRING LENGTH - STATIC METRIC:
- 90 MM
- UNITS:
- PAIR
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
$18.95 -
MOOSE RACING Exhaust Springs - 95mm 495-9500
MOOSE RACING
$18.95Exhaust springs are a critical fastening component that endure extreme thermal cycling and vibration—standard springs fail prematurely under these conditions, leading to loose hardware and potential exhaust system damage. The MOOSE RACING 495-9500...M7719- SKU:
- M7719
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- UNITS:
- 2 PACK
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- EXHAUST SPRING
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- SPRING LENGTH - STATIC METRIC:
- 95 MM
$18.95 -
MOOSE RACING Exhaust Springs - 100mm 495-9900
MOOSE RACING
$18.95Exhaust springs endure extreme thermal cycling and constant vibration—standard hardware fails prematurely, leading to rattling systems and unwanted exhaust leaks. The MOOSE RACING 100mm exhaust springs deliver precision engineering with a swivel hook...M7720- SKU:
- M7720
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- SPRING LENGTH - STATIC METRIC:
- 100 MM
- UNITS:
- 2 PACK
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- EXHAUST SPRING
- RIDING STYLE:
- UTV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
$18.95 -
MOOSE RACING Heat Shield - 18"x18" 401-1302
MOOSE RACING
$36.95Engine and exhaust heat can warp, crack, or discolor plastic and fiberglass body panels, leading to costly repairs and compromised aesthetics. The MOOSE RACING Heat Shield provides a proven barrier that reflects radiant heat away from vulnerable...M30051- SKU:
- M30051
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- HEAT SHIELD
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ALUMINUM
- LENGTH IMPERIAL:
- 18'
- MATERIAL:
- FOIL-COATED CERAMIC CLOTH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- WIDTH IMPERIAL:
- 18'
- COLOR/FINISH:
- SILVER
- STYLE:
- SHEET
$36.95 -
MOOSE RACING Exhaust Springs 495-5700
MOOSE RACING
$18.95Exhaust springs are a critical component that most racers and mechanics overlook until failure causes costly downtime. The MOOSE RACING 495-5700 exhaust springs deliver reliable support and vibration isolation for your exhaust system while eliminating...M7714- SKU:
- M7714
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- SPRING LENGTH - STATIC METRIC:
- 57 MM
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- ATV
- TYPE:
- EXHAUST
- UNITS:
- PAIR
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- MATERIAL:
- STAINLESS STEEL
$18.95 -
MOOSE RACING Exhaust Springs 495-6700
MOOSE RACING
$18.95Exhaust springs are critical fastening components that experience constant thermal cycling and vibration—without proper engineering, they fail prematurely and create dangerous rattling or misalignment. The MOOSE RACING 495-6700 eliminates these issues...M7710- SKU:
- M7710
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- SPRING LENGTH - STATIC METRIC:
- 67 MM
- TYPE:
- EXHAUST
$18.95 -
MOOSE RACING Exhaust Springs 495-7500
MOOSE RACING
$18.95Exhaust springs are critical fastening components that experience constant thermal cycling and vibration—standard springs fail prematurely, leading to loose heat shields, rattling, and potential exhaust system damage. MOOSE RACING's stainless steel...M7711- SKU:
- M7711
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- SNOW
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- UTV
- SPRING LENGTH - STATIC METRIC:
- 75 MM
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
$18.95 -
MOOSE RACING Exhaust Springs 495-3800
MOOSE RACING
$18.95Exhaust springs take a beating from constant thermal cycling and vibration, and a worn-out spring will allow your exhaust system to sag, rattle, and eventually fail. MOOSE Racing exhaust springs are built from stainless steel with a swivel hook design...M7713- SKU:
- M7713
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- ATV
- SPRING LENGTH - STATIC METRIC:
- 38 MM
- TYPE:
- EXHAUST
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- PAIR
$18.95 -
MOOSE RACING Exhaust Springs 495-7000
MOOSE RACING
$18.95Exhaust springs are critical fasteners that absorb vibration and movement in your exhaust system, preventing cracks, leaks, and premature component failure. The MOOSE RACING 495-7000 combines corrosion-resistant stainless steel with a purpose-engineered...M7716- SKU:
- M7716
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- STAINLESS STEEL
- SPRING LENGTH - STATIC METRIC:
- 70 MM
- TYPE:
- EXHAUST
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- RIDING STYLE:
- ATV
$18.95 -
MOOSE RACING Exhaust Springs 495-8000
MOOSE RACING
$18.95Exhaust springs are critical fastening components that secure your exhaust system and absorb vibration during engine operation. A worn or undersized spring compromises both performance and durability, leading to rattling, misalignment, and potential heat...M7717- SKU:
- M7717
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- STREET
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- SPRING
- SPRING LENGTH - STATIC METRIC:
- 80 MM
- TYPE:
- EXHAUST
- UNITS:
- PAIR
- MATERIAL:
- STAINLESS STEEL
$18.95 -
MOOSE RACING 52 mm Exhaust Spring 495-5200
MOOSE RACING
$19.95Exhaust springs endure constant thermal cycling and vibration—standard springs fail prematurely, leading to costly downtime and potential exhaust system damage. The MOOSE RACING 52 mm Exhaust Spring eliminates binding issues with its swivel hook design,...18601962- SKU:
- 18601962
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- SPRING LENGTH - STATIC METRIC:
- 52 MM
- PRODUCT NAME:
- SPRING
- TYPE:
- EXHAUST
- UNITS:
- 2 PACK
$19.95 -
MOOSE RACING Muffler Packing - 10.5"x16" 1860-0852
MOOSE RACING
$7.95A blown-out muffler packing doesn't just kill your power—it kills your sound control and efficiency. This MOOSE RACING repack kit restores your 2-stroke silencer to factory performance levels while giving you the material to maintain it for years to come...18600852- SKU:
- 18600852
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- MUFFLER PACKING
- UNITS:
- EACH
- LENGTH IMPERIAL:
- 16'
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- FIBERGLASS
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- WIDTH IMPERIAL:
- 10-1/2'
$7.95Qty in Cart: 0Quantity:Price:$7.95Subtotal: -
MOOSE RACING Exhaust Springs 495-8300
MOOSE RACING
$18.95Exhaust springs endure constant thermal cycling and vibration—inadequate ones lead to premature failure, rattling, and potential exhaust system damage. The MOOSE RACING 495-8300 delivers the durability and reliability you need with stainless steel...M7712- SKU:
- M7712
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- UNITS:
- PAIR
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- ATV
- TYPE:
- EXHAUST
- RIDING STYLE:
- STREET
- SPRING LENGTH - STATIC METRIC:
- 83 MM
$18.95 -
MOOSE RACING Spec 19 Competition Packing - 750g 14584
MOOSE RACING
$40.95Muffler performance depends on proper core packing—substandard materials break down under heat and pressure, killing your sound deadening and forcing costly rebuilds. MOOSE Racing Spec 19 Competition Packing delivers the thermal stability and fiber...18601717- SKU:
- 18601717
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- COMPETITION SERIES
- PRODUCT NAME:
- MUFFLER PACKING
- TYPE:
- BULK
- WEIGHT METRIC:
- 750 G
- UNITS:
- EACH
$40.95Qty in Cart: 0Quantity:Price:$40.95Subtotal: -
MOOSE RACING Bristol Spec 19 Muffler Packing Pillow - 2 Stroke - 16" 14567
MOOSE RACING
$24.95If you're running a 2-stroke off-road machine, muffler packing degradation is a constant maintenance headache that directly impacts performance and noise control. The MOOSE RACING Bristol Spec 19 addresses this with packing material engineered to last...18601719- SKU:
- 18601719
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- PILLOW PACK
- LENGTH IMPERIAL:
- 20'
- STYLE:
- 2-STROKE
- TYPE:
- MUFFLER
- UNITS:
- EACH
$24.95Qty in Cart: 0Quantity:Price:$24.95Subtotal: -
MOOSE RACING Bristol Spec 19 Muffler Packing Pillow - 4 Stroke - 15" 14677
MOOSE RACING
$34.95Muffler packing deteriorates quickly under extreme heat and vibration, forcing frequent replacements and costly downtime. The MOOSE RACING Bristol Spec 19 Muffler Packing Pillow extends service intervals to 30-40 engine hours while outlasting traditional...18601720- SKU:
- 18601720
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- RIDING STYLE:
- OFF-ROAD
- LENGTH IMPERIAL:
- 15'
- PRODUCT NAME:
- PILLOW PACK
- STYLE:
- 4-STROKE
- TYPE:
- MUFFLER
- UNITS:
- EACH
$34.95 -
MOOSE RACING Bristol Spec 19 Muffler Packing Pillow - 4 Stroke - 19" 14552
MOOSE RACING
$40.95If you're running an off-road four-stroke on a regular schedule, muffler packing degradation is a maintenance reality that cuts into your ride time and forces frequent rebuilds. The MOOSE Racing Bristol Spec 19 Packing Pillow solves this with a...18601721- SKU:
- 18601721
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- LENGTH IMPERIAL:
- 19'
- STYLE:
- 4-STROKE
- TYPE:
- MUFFLER
- UNITS:
- EACH
- PRODUCT NAME:
- PILLOW PACK
- RIDING STYLE:
- OFF-ROAD
$40.95 -
MOOSE RACING Muffler Packing -11X16X1 160-1112M
MOOSE RACING
$20.95Muffler packing degrades under sustained heat and exhaust flow, compromising your system's acoustic performance and structural integrity. This MOOSE RACING replacement packing restores proper sound dampening and thermal stability, keeping your exhaust...18602211- SKU:
- 18602211
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- PRODUCT NAME:
- MUFFLER PACKING
- WIDTH IMPERIAL:
- 11'
- LENGTH IMPERIAL:
- 16'
- RIDING STYLE:
- STREET
- STYLE:
- 4-STROKE
- UNITS:
- EACH
$20.95 -
MOOSE RACING Pillow Packing 13" 2T 14709
MOOSE RACING
$25.95Proper suspension geometry depends on precise wheel alignment and setup—and pillow pack spacers are essential for dialing in your ride height and geometry without compromising structural integrity. MOOSE RACING's pillow packing delivers the consistent,...18602222- SKU:
- 18602222
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- LENGTH IMPERIAL:
- 16'
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- 2-STROKE
- TYPE:
- MUFFLER
- UNITS:
- KIT
- PRODUCT NAME:
- PILLOW PACK
$25.95Qty in Cart: 0Quantity:Price:$25.95Subtotal: -
MOOSE RACING Competition Muffler Packing - 750g 14414
MOOSE RACING
$28.95A quality muffler repack is essential maintenance for any serious racer or high-performance enthusiast. Stock fiberglass packing degrades quickly under sustained heat and exhaust velocity, leaving you with deteriorating sound control and reduced...18600575- SKU:
- 18600575
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- PRODUCT NAME:
- MUFFLER PACKING
- RIDING STYLE:
- ATV
- TYPE:
- COMPETITION
- UNITS:
- EACH
- WEIGHT METRIC:
- 750 G
- MATERIAL:
- HIGH-TEMPERATURE FABRIC
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- SNOW
- RIDING STYLE:
- UTV
- RIDING STYLE:
- STREET
$28.95Qty in Cart: 0Quantity:Price:$28.95Subtotal:
