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
$25.95The same low-weight, high-quality packing material used in our repack cartridges, Lighter, quieter, and longer lasting than fiberglass mat packing, Resists breakdown up to 1100°F, Made in the U.S.A.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
$25.95 -
MOOSE RACING Universal Exhaust Re-Pack Kit 14234
MOOSE RACING
$49.95Louder exhaust does not mean more horsepower, Blown-out packing causes exhaust turbulence and increased back pressure, which reduces horsepower, Repack your silencer with this pro-quality, three-layer packing system and restore the power you've blown...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
$9.95Have the right parts ready to complete the job, Steel rivets with corrosion-resistant coating, Rivets designed to be pulled by a hand-operated rivet gun; no air power needed, Rivet diameter 3/16" with a grip range of .125" to .6", Kit includes 20 rivets...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
$9.95 -
Pro Circuit Carbon Fiber End Cap for Ti-5/Ti-6 4.5" 1.5" Hole PC4022-0003
PRO CIRCUIT
$132.95Enhance your ride with the PRO CIRCUIT End Cap, designed specifically for Ti-5 and Ti-6 models. Crafted from high-quality carbon fiber, this end cap not only adds a sleek look but also incorporates Quiet Core and Quiet Tips inserts to deliver a refined...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
$18.95The same low-weight, high-quality packing material used in our repack cartridges, Lighter, quieter, and longer lasting than fiberglass mat packing, Resists breakdown up to 1100°F, Made in the U.S.A.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
$18.95Stainless steel construction gives superior strength and appearance, Swivel hook design eliminates binding, extending spring life, Made in the U.S.A.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
$18.95Stainless steel construction gives superior strength and appearance, Swivel hook design eliminates binding, extending spring life, Made in the U.S.A., Exhaust springs should be measured when they are off the vehicle. Wear eye protection when removing,...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
$42.95Two-layer wrap consists of 304 stainless wire cloth and a very durable, high-temp stainless steel wool, Keeps engine performance and sound levels more consistent compared to packing fiber directly around the core, Can be easily trimmed with scissors for...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
$49.95 -
AKRAPOVIC End Cap - EC52 V-EC52
AKRAPOVIC
$130.85Replace lost or damaged exhaust parts18600396- 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
$130.85 -
BOLT Mounting Hardware Kit - KTM EU.EX.MNTS
BOLT
$24.99Exhaust mount includes two KTM-style pipe mounts, two clip nuts and four fasteners; fit all KTM 50cc-300cc 2-strokes18601272- 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
$26.99Hardware kits contain model-specific green Viton® rubber pipe O-rings, pipe-to-silencer coupler and springs18601274- 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
$26.99Hardware kits contain model-specific green Viton® rubber pipe O-rings, pipe-to-silencer coupler and springs18601275- 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
$26.99Hardware kits contain model-specific green Viton® rubber pipe O-rings, pipe-to-silencer coupler and springs18601277- 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
$26.99Hardware kits contain model-specific green Viton® rubber pipe O-rings, pipe-to-silencer coupler and springs18601278- 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
$26.99Hardware kits contain model-specific green Viton® rubber pipe O-rings, pipe-to-silencer coupler and springs18601276- 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 -
On Sale
LEOVINCE Clamp - Scooter 304051501R
LEOVINCE
MSRP: $37.95Now: $34.16Was: $37.95Replacement muffler clamps18600850- 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
MSRP: $37.95Now: $34.16Was: $37.95 -
On Sale
LA CHOPPERS 24" Baffle with Packing - 1.625" LA-1216-24P
LA CHOPPERS
MSRP: $52.95Now: $34.00Was: $52.95LA CHOPPERS 24" Baffle with Packing - 1.625" LA-1216-24P is a replacement exhaust baffle designed to restore performance and reduce noise. It also serves as material for custom fabrication projects. Includes two sheets of packing for immediate...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: -
On Sale
FMF End Cap - Stainless Steel - Straight Cut - PC4/Q4 040634
FMF
MSRP: $34.99Now: $30.00Was: $34.99Replacement 4-Stroke Exhaust End Cap18600500- 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
MSRP: $34.99Now: $30.00Was: $34.99 -
On Sale
FMF RCT End Cap - Stainless Steel 040641
FMF
MSRP: $49.99Now: $42.00Was: $49.99Includes end cap, 3/16 stainless steel rivets, and strap mounts to secure end cap to canister18600561- 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
MSRP: $49.99Now: $42.00Was: $49.99
