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
$18.95Stainless 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,...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
$18.95Stainless steel construction gives superior strength and appearance, Swivel hook design eliminates binding, extending spring life, Made in the U.S.A.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
$18.95Stainless steel construction gives superior strength and appearance, Swivel hook design eliminates binding, extending spring life, Made in the U.S.A.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
$36.95Aluminized heat barrier with adhesive backing, Foil-coated fiberglass cloth adheres to body panels to protect plastic or fiberglass from engine or exhaust heat, Made in the U.S.A.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
$18.95Stainless 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,...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
$18.95Stainless 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,...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
$18.95Stainless 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,...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
$18.95Stainless 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,...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
$18.95Stainless 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,...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
$18.95Stainless 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,...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
$19.95Stainless steel construction gives superior strength and appearance, Swivel hook design eliminates binding, extending spring life, Sold in pairs, Made in the U.S.A.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
$7.95Repack blown-out silencer for quieter running and more power, Long-filament fiberglass made especially for muffler packing, Measures 10.5" x 16", more than enough to repack virtually any 2-stroke silencer, Resists breakdown up to 1,200° F, Made in the U...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'
$7.95 -
MOOSE RACING Exhaust Springs 495-8300
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,...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
$40.95Bulk packing is designed to be stuffed around a muffler's core to fill any shape, Resist's breakdown up to 1500 degrees, High strength fibers withstand turbulence and pressure from noise reducing muffler inserts, Made in USA18601717- 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
$24.95Universal, easy-to-install design, Pillow can be trimmed to length to fit off-road muffler up to 20" inches long, Lasts 3-5 times longer than traditional packing and extends service to 30-40 engine hours, Resists breakdowns up to 1400°F, Comes with cap...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
$24.95 -
MOOSE RACING Bristol Spec 19 Muffler Packing Pillow - 4 Stroke - 15" 14677
MOOSE RACING
$34.95Universal, easy-to-install design, Pillow can be trimmed to length to fit off-road muffler up to 20" inches long, Lasts 3-5 times longer than traditional packing and extends service to 30-40 engine hours, Resists breakdowns up to 1400°F, Comes with cap...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
$40.95Universal, easy-to-install design, Pillow can be trimmed to length to fit off-road muffler up to 20" inches long, Lasts 3-5 times longer than traditional packing and extends service to 30-40 engine hours, Resists breakdowns up to 1400°F, Comes with cap...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
$20.95Resists breakdown up tp 1200 F degrees, Made in the U.S.A.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
$25.95MOOSE RACING Pillow Packing 13" 2T18602222- 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
$28.95The 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.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:
