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
-
FMF RCT End Cap - Carbon Fiber 040643
FMF
$129.99Includes end cap, 3/16 stainless steel rivets, and strap mounts to secure end cap to canister18600563- SKU:
- 18600563
- Availability:
- Ships Same Business Day
- Weight:
- 0.54 LBS
- END CAP STYLE:
- EURO
- PRODUCT NAME:
- END CAP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- CARBON FIBER
- OUTSIDE DIAMETER IMPERIAL:
- 4'
- MODEL:
- FACTORY 4.1 RCT
- TYPE:
- EXHAUST
$129.99 -
FMF Muffler Sleeve - Aluminum 040652
FMF
$19.99Replacement sleeves for worn out mid-pipes18600582- SKU:
- 18600582
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- LENGTH IMPERIAL:
- 4'
- RIDING STYLE:
- UTV
- TYPE:
- MID PIPE INLET SLEEVE INSERT
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- INSERT
- RIDING STYLE:
- ATV
- STYLE:
- ROUND
$19.99 -
FMF Exhaust O-Ring Kit - KTM 014803
FMF
$12.99Exhaust pipe O-rings18600607- SKU:
- 18600607
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- O-RING
- TYPE:
- EXHAUST
- UNITS:
- PAIR
$12.99 -
FMF Quiet Core Spark Arrestor Insert - Q4 Hex 040671
FMF
$39.99Replacement 4-Stroke Exhaust Spark Arrestor Screen Insert18600701- SKU:
- 18600701
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- SCREEN INSERT
- TYPE:
- SPARK ARRESTOR
- UNITS:
- EACH
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- Q4 HEX
$39.99 -
FMF Spark Arrestor - Powercore 4 Hex 040670
FMF
$29.99Replacement 4-Stroke Exhaust Spark Arrestor Screen Insert18600703- SKU:
- 18600703
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- SCREEN INSERT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MODEL:
- POWERCORE 4 HEX
- TYPE:
- SPARK ARRESTOR
$29.99 -
FMF Exhaust O-Rings 014822
FMF
$12.99Exhaust pipe O-rings18600931- SKU:
- 18600931
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- RUBBER
- TYPE:
- EXHAUST
- UNITS:
- PAIR
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- OFF-ROAD
$12.99 -
FMF Exhaust O-Rings 014823
FMF
$12.99Exhaust pipe O-rings18600932- SKU:
- 18600932
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- RUBBER
- TYPE:
- EXHAUST
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
$12.99 -
FMF Exhaust O-Rings 014824
FMF
$12.99Exhaust pipe O-rings18600933- SKU:
- 18600933
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- PRODUCT NAME:
- O-RING
- MATERIAL:
- RUBBER
- TYPE:
- EXHAUST
$12.99 -
FMF Universal Strap 020480
FMF
$24.99Universal fitment for FMF 2-stroke mufflers/spark arrestors18600935- SKU:
- 18600935
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- STRAP
- RIDING STYLE:
- OFF-ROAD
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- RIDING STYLE:
- UTV
- TYPE:
- MOUNTING STRAP
$24.99 -
FMF Wrap Decal - Mini Replacement 014851
FMF
$16.99FMF Wrap Decal - Mini Replacement18602113- SKU:
- 18602113
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- BLUE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- BLACK
- COLOR/FINISH:
- RED
- COLOR/FINISH:
- YELLOW
- GRAPHIC:
- FMF LOGO
- BASE COLOR:
- BLACK
- BASE COLOR:
- RED
- BASE COLOR:
- YELLOW
- STYLE:
- FACTORY 4.1 MINI
- TYPE:
- EXHAUST
- UNITS:
- EACH
- COLOR/FINISH:
- WHITE
- PRODUCT NAME:
- DECAL
$16.99 -
FMF Replacement Ring - Factory 4.1 RCT 040677
FMF
$5.99Retaining ring for FMF 4-Stroke exhaust system18601050- SKU:
- 18601050
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- RETAINING RING
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- REPLACEMENT COMPONENT
- UNITS:
- EACH
$5.99 -
DG PERFORMANCE Exhaust Springs - 52mm 98-1052
DG PERFORMANCE
$18.99For DG 4-stroke exhaust pipes, Contains (2) stainless steel exhaust swivel springs, Free-floating mounting hooks to avoid breakage18600964- SKU:
- 18600964
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- SPRING
- SPRING LENGTH - STATIC METRIC:
- 52 MM
- TYPE:
- EXHAUST
- UNITS:
- PAIR
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
$18.99 -
DG PERFORMANCE Exhaust Springs - 58mm 98-1058
DG PERFORMANCE
$18.99For DG 4-stroke exhaust pipes, Contains (2) stainless steel exhaust swivel springs, Free-floating mounting hooks to avoid breakage18600963- SKU:
- 18600963
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STAINLESS STEEL
- SPRING LENGTH - STATIC METRIC:
- 58 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- SPRING
- RIDING STYLE:
- UTV
- TYPE:
- EXHAUST
$18.99 -
FMF Replacement Rear Cone - 1.250" - Turbinecore 2 020464
FMF
$39.99Replacement caps for FMF silencersFMF020464- SKU:
- FMF020464
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- MATERIAL:
- STAINLESS STEEL
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
- TYPE:
- END CAP
- UNITS:
- EACH
- COLOR/FINISH:
- STAINLESS STEEL
- OUTLET DIAMETER IMPERIAL:
- 1.250'
- BASE FINISH:
- NATURAL
- END CAP STYLE:
- CONICAL
- MODEL:
- TURBINECORE 2
- PRODUCT NAME:
- CAP
- RIDING STYLE:
- OFF-ROAD
$39.99 -
FMF Stainless Spring Kit - 4-Stroke 011396
FMF
$10.99Replacement exhaust springsFMF011396- SKU:
- FMF011396
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- KIT
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- SPRING
- UNITS:
- PAIR
$10.99 -
FMF Spring and O-Ring Kit 011319
FMF
$12.99Spring and O-ring kit for exhaust pipeFMF011319- SKU:
- FMF011319
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- UNITS:
- KIT
- TYPE:
- EXHAUST
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- UTV
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- RIDING STYLE:
- ATV
$12.99 -
FMF Spring and O-Ring Kit 011318
FMF
$12.99Spring and O-ring kit for exhaust pipeFMF011318- SKU:
- FMF011318
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- O-RING
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- EXHAUST
$12.99 -
FMF Spring and O-Ring Kit 011317
FMF
$12.99Spring and O-ring kit for exhaust pipeFMF011317- SKU:
- FMF011317
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 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 011316
FMF
$12.99Spring and O-ring kit for exhaust pipeFMF011316- SKU:
- FMF011316
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- O-RING
- TYPE:
- EXHAUST
$12.99 -
FMF Spring and O-Ring Kit 011315
FMF
$12.99Spring and O-ring kit for exhaust pipeFMF011315- SKU:
- FMF011315
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- EXHAUST
$12.99
