Dirt Bike Air Filters and Parts
Dirt Bike Air Filters & Parts for Honda, Suzuki, Yamaha & KTM at JJ Motorsports
Boost your dirt bike's engine performance and longevity with premium air filters and parts from JJ Motorsports. Our selection includes high-flow OEM-style air filters, pre-filters, filter skins, and maintenance kits designed for superior dust protection, increased airflow, and easy cleaning in motocross, enduro, and trail riding. Compatible with top brands like Honda CRF, Suzuki RM, Yamaha YZ/WR, and KTM SX/EXC models, these durable foam and paper elements ensure cleaner air intake, better throttle response, and reduced engine wear in dusty conditions. From Twin Air's legendary foam filters to Uni Filter's dual-layer designs, we have the parts to keep your 2-stroke or 4-stroke running at peak power.
Shop trusted brands like Twin Air, Uni Filter, and Pro Filter for race-proven quality. Explore related categories such as dirt bike air and fuel for carburetors and jets or dirt bike engines and components for rebuild kits.
Top Dirt Bike Air Filters & Parts
- Twin Air Standard Air Filter Suzuki RM250 2001-2008 153108 – High-quality dual-stage foam air filter for Suzuki RM250 models, providing excellent filtration and airflow for optimal engine performance.
- Twin Air Standard Air Filter Honda CRF250R 2004-2007 150012 – Precision-engineered foam filter for Honda CRF250R, featuring oil-impregnated layers for superior dust trapping and easy maintenance.
- Pro Filter Premium Air Filter Yamaha MTX200 1986-1990 2010-03 – Premium dual-bonded foam air filter for Yamaha MTX200, designed for maximum airflow and protection in off-road conditions.
- Uni Filter Air Filter 1-7/8" x 2-1/16" x 3" PK-82 – Compact foam air filter with 1-7/8" inlet, 2-1/16" outlet, and 3" height, ideal for custom or small-displacement dirt bike applications.
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
-
UNI FILTER Air Filter - CR125/250 '75-'78 NU-4025ST
UNI FILTER
$35.95Stock air filters restrict airflow and require frequent replacement—a UNI FILTER gives you reusable performance without compromise. The two-stage design maximizes breathing room for your CR125/250 while the Ultra Seal grease groove maintains a reliable...10112503- SKU:
- 10112503
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- FILTER SHAPE:
- CYLINDER
- UNITS:
- EACH
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- FILTER MEDIA STYLE:
- DUAL-LAYER
- STYLE:
- STANDARD
- TYPE:
- STAGE II
- BASE COLOR:
- RED
- FILTER SHAPE:
- ODD
- FILTER SHAPE:
- OVAL
- MODEL:
- ULTRA-SEAL
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
$35.95 -
UNI FILTER Air Filter - CR125R '79-'80 NU-4044ST
UNI FILTER
$35.95Stock air filters restrict flow and require frequent replacement—the UNI FILTER NU-4044ST delivers superior airflow while remaining reusable for years, saving you money and keeping your CR125R running lean and responsive. Two-stage construction and the...10112504- SKU:
- 10112504
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BASE COLOR:
- RED
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- FILTER MEDIA STYLE:
- DUAL-LAYER
- MODEL:
- ULTRA-SEAL
- TYPE:
- STAGE II
- FILTER SHAPE:
- CYLINDER
- UNITS:
- EACH
$35.95 -
UNI FILTER Air Filter - CR250 '73-'74 NU-4008
UNI FILTER
$35.95A high-flow air filter directly impacts engine performance by reducing intake restriction while maintaining superior filtration—critical for maintaining power output and engine longevity on your CR250. The UNI FILTER NU-4008 delivers the airflow gains...10112505- SKU:
- 10112505
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- BLUE
- FILTER MEDIA MATERIAL:
- FOAM
- FILTER SHAPE:
- CYLINDER
- FILTER MEDIA STYLE:
- DUAL-LAYER
- STYLE:
- STANDARD
- PRODUCT NAME:
- AIR FILTER
- UNITS:
- EACH
- FEATURES:
- WASHABLE
- MODEL:
- ULTRA-SEAL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STAGE II
$35.95 -
UNI FILTER Air Filter - CR250 '78-'80 NU-4035ST
UNI FILTER
$29.95If you're running a CR250 '78-'80, airflow is everything—and a restrictive stock filter is costing you performance. The UNI FILTER NU-4035ST delivers superior filtration without the horsepower penalty, keeping your engine breathing freely while stopping...10112506- SKU:
- 10112506
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- FEATURES:
- WASHABLE
- FILTER SHAPE:
- ODD
- MODEL:
- ULTRA-SEAL
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STAGE II
- FILTER MEDIA STYLE:
- DUAL-LAYER
- STYLE:
- STANDARD
- BASE COLOR:
- RED
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- FOAM
- FILTER SHAPE:
- CYLINDER
$29.95 -
UNI FILTER Air Filter - Husqvarna NU-1001ST
UNI FILTER
$37.95The UNI FILTER Air Filter for Husqvarna delivers superior airflow without compromising filtration—a critical combination for maintaining peak engine performance and reliability. Unlike disposable filters that degrade over time, this reusable design...10112507- SKU:
- 10112507
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BASE COLOR:
- RED
- FILTER MEDIA MATERIAL:
- FOAM
- STYLE:
- STANDARD
- TYPE:
- STAGE II
- FEATURES:
- WASHABLE
- FILTER SHAPE:
- CYLINDER
- MODEL:
- ULTRA-SEAL
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- FILTER MEDIA STYLE:
- DUAL-LAYER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$37.95 -
UNI FILTER Air Filter - Husqvarna NU-1002ST
UNI FILTER
$37.95Stock air filters sacrifice longevity for convenience—but the UNI FILTER NU-1002ST breaks that tradeoff by delivering reusable performance without compromise. Its two-stage design maximizes airflow while maintaining exceptional filtration, giving your...10112508- SKU:
- 10112508
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- FEATURES:
- WASHABLE
- FILTER MEDIA STYLE:
- DUAL-LAYER
- MODEL:
- ULTRA-SEAL
- STYLE:
- COMPETITION
- TYPE:
- MULTI STAGE
- BASE COLOR:
- RED
- FILTER SHAPE:
- CYLINDER
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- FOAM
$37.95Qty in Cart: 0Quantity:Price:$37.95Subtotal: -
UNI FILTER Air Filter - Husqvarna '79-'82 NU-1003ST
UNI FILTER
$37.95Stock air filters restrict airflow and require frequent replacement—a constant drain on performance and your wallet. The UNI FILTER NU-1003ST delivers superior filtration without compromise, allowing your Husqvarna to breathe freely while trapping dirt...10112509- SKU:
- 10112509
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- BASE COLOR:
- RED
- PRODUCT NAME:
- AIR FILTER
- STYLE:
- STANDARD
- TYPE:
- STAGE II
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- MODEL:
- ULTRA-SEAL
- RIDING STYLE:
- OFF-ROAD
- FILTER MEDIA STYLE:
- DUAL-LAYER
- FILTER SHAPE:
- CYLINDER
- UNITS:
- EACH
$37.95 -
UNI FILTER Air Filter - Maico '80-'81 NU-1202ST
UNI FILTER
$37.95The UNI FILTER NU-1202ST delivers superior airflow and filtration for your Maico '80-'81, keeping your engine breathing freely while protecting it from contaminants. Unlike disposable filters that choke performance and demand constant replacement, this...10112512- SKU:
- 10112512
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- FEATURES:
- WASHABLE
- FILTER SHAPE:
- RECTANGULAR
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- COMPETITION
- FILTER MEDIA STYLE:
- DUAL-LAYER
- TYPE:
- MULTI STAGE
- BASE COLOR:
- RED
- FILTER SHAPE:
- ELONGATED
- PRODUCT NAME:
- AIR FILTER
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- FOAM
- MODEL:
- UNI-SEAL
$37.95 -
UNI FILTER Air Filter - Penton 125/175 NU-1401ST
UNI FILTER
$37.95Stock air filters restrict airflow and require frequent replacement, compromising engine efficiency and increasing maintenance costs. The UNI FILTER NU-1401ST delivers superior filtration and airflow for your Penton 125/175, using a reusable two-stage...10112513- SKU:
- 10112513
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- FILTER MEDIA MATERIAL:
- FOAM
- STYLE:
- STANDARD
- FILTER SHAPE:
- OVAL
- BASE COLOR:
- RED
- FILTER SHAPE:
- ELONGATED
- PRODUCT NAME:
- AIR FILTER FOR PENTON 125/175 MODELS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- FEATURES:
- WASHABLE
- FILTER MEDIA STYLE:
- DUAL-LAYER
- MODEL:
- ULTRA-SEAL
- TYPE:
- STAGE II
$37.95 -
UNI FILTER Air Filter - Suzuki TM250/400 NU-2408
UNI FILTER
$21.95The UNI FILTER NU-2408 delivers superior airflow and filtration for your Suzuki TM250/400 without sacrificing engine protection. Unlike disposable filters that require constant replacement, this reusable design cleans easily with household dishwashing...10112514- SKU:
- 10112514
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- FILTER MEDIA STYLE:
- DUAL-LAYER
- UNITS:
- EACH
- FILTER SHAPE:
- OVAL
- TYPE:
- STAGE II
- FEATURES:
- WASHABLE
- MODEL:
- ULTRA-SEAL
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- BLUE
- FILTER MEDIA MATERIAL:
- FOAM
- STYLE:
- STANDARD
$21.95Qty in Cart: 0Quantity:Price:$21.95Subtotal: -
UNI FILTER Air Filter - Yamaha YZ80 '78-'80 NU-2239ST
UNI FILTER
$33.95Stock air filters restrict airflow and require frequent replacement—a reusable UNI filter delivers superior filtration while cutting your long-term costs and maintenance hassles. The two-stage design separates for thorough cleaning, meaning you can...10112515- SKU:
- 10112515
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BASE COLOR:
- RED
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- MODEL:
- ULTRA-SEAL
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- FILTER SHAPE:
- OVAL
- TYPE:
- STAGE II
- COLOR/FINISH:
- RED
- FILTER MEDIA STYLE:
- DUAL-LAYER
- UNITS:
- EACH
$33.95 -
UNI FILTER Air Filter - Yamaha YZ80 '81-'82 NU-2249ST
UNI FILTER
$31.95Stock air filters restrict airflow and require frequent replacement, costing you performance and money over time. The UNI FILTER NU-2249ST delivers superior filtration and airflow for your YZ80 while remaining completely reusable—clean it, oil it, and...10112516- SKU:
- 10112516
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- COLOR/FINISH:
- RED
- FILTER MEDIA STYLE:
- DUAL-LAYER
- FILTER SHAPE:
- CYLINDER
- UNITS:
- EACH
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- MODEL:
- UNI-SEAL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STAGE II
- BASE COLOR:
- RED
- PRODUCT NAME:
- AIR FILTER
$31.95 -
UNI FILTER Air Filter - Yamaha NU-2237ST
UNI FILTER
$31.95A quality air filter is fundamental to engine efficiency—it protects your intake while maintaining the airflow your engine demands. The UNI FILTER NU-2237ST delivers superior filtration and airflow characteristics, meaning better throttle response and...10112519- SKU:
- 10112519
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- FEATURES:
- WASHABLE
- MODEL:
- ULTRA-SEAL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STAGE II
- COLOR/FINISH:
- RED
- FILTER MEDIA STYLE:
- DUAL-LAYER
- RIDING STYLE:
- STREET
- BASE COLOR:
- RED
- FILTER SHAPE:
- CONE
- PRODUCT NAME:
- AIR FILTER
- UNITS:
- EACH
- FILTER MEDIA MATERIAL:
- FOAM
$31.95 -
UNI FILTER Air Filter - TY250 Trails NU-2218
UNI FILTER
$35.95Stock air filters restrict airflow and require frequent replacement—the UNI FILTER NU-2218 eliminates both problems with a reusable two-stage design that delivers superior filtration without sacrificing breathing room. Built for the TY250 Trails, this U...10112522- SKU:
- 10112522
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- FILTER MEDIA STYLE:
- DUAL-LAYER
- UNITS:
- EACH
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- MODEL:
- ULTRA-SEAL
- RIDING STYLE:
- OFF-ROAD
- BASE COLOR:
- YELLOW
- FILTER SHAPE:
- OVAL
- TYPE:
- STAGE II
- FILTER SHAPE:
- ELONGATED
- PRODUCT NAME:
- AIR FILTER
- STYLE:
- STANDARD
$35.95 -
UNI FILTER Air Filter - YZ/IT250/400 NU-2235ST
UNI FILTER
$35.95Dirt bikes demand air filtration that keeps up with your performance expectations—and disposable filters can't match the long-term value and reliability of a quality reusable unit. The UNI FILTER NU-2235ST delivers superior airflow and dirt-stopping...10112523- SKU:
- 10112523
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- BASE COLOR:
- RED
- FILTER SHAPE:
- TAPERED
- PRODUCT NAME:
- AIR FILTER
- STYLE:
- STANDARD
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- MODEL:
- ULTRA-SEAL
- RIDING STYLE:
- OFF-ROAD
- FILTER SHAPE:
- OVAL
- TYPE:
- STAGE II
- FILTER MEDIA STYLE:
- DUAL-LAYER
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- UNITS:
- EACH
$35.95 -
UNI FILTER Air Filter - TT/XT500 '77-'81 NU-2225ST
UNI FILTER
$33.95Stock air filters restrict flow and demand constant replacement—they're a hidden tax on performance. The UNI FILTER NU-2225ST eliminates that cycle with a reusable design that flows better than OEM while trapping more dirt, giving your TT/XT500 cleaner...10112525- SKU:
- 10112525
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- FILTER MEDIA MATERIAL:
- FOAM
- FILTER SHAPE:
- SQUARE
- STYLE:
- STANDARD
- BASE COLOR:
- RED
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- FEATURES:
- WASHABLE
- FILTER MEDIA STYLE:
- DUAL-LAYER
- MODEL:
- ULTRA-SEAL
- TYPE:
- STAGE II
$33.95 -
UNI FILTER Air Filter - Husqvarna NU-1010ST
UNI FILTER
$45.95Stock air filters trap dirt while suffocating your engine's breathing potential—the UNI FILTER NU-1010ST replaces that compromise with genuine high-flow filtration that maintains peak airflow without sacrificing protection. Its two-stage design and...10112685- SKU:
- 10112685
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
$45.95Qty in Cart: 0Quantity:Price:$45.95Subtotal: -
UNI FILTER Air Filter - SX/TC 50 NU-1419ST
UNI FILTER
$14.95Stock air filters restrict flow and lose efficiency quickly—the UNI FILTER SX/TC 50 delivers superior airflow while actually stopping more dirt, giving your engine the clean air it needs to perform consistently. Built for reusability, this two-stage...10112479- SKU:
- 10112479
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- BASE COLOR:
- RED
- FILTER SHAPE:
- ODD
- FILTER SHAPE:
- RECTANGULAR
- PRODUCT NAME:
- AIR FILTER
- RIDING STYLE:
- OFF-ROAD
- FEATURES:
- WASHABLE
- FILTER MEDIA MATERIAL:
- FOAM
- FILTER MEDIA STYLE:
- DUAL-LAYER
- MODEL:
- ULTRA-SEAL
- STYLE:
- STANDARD
- TYPE:
- STAGE II
- UNITS:
- EACH
$14.95Qty in Cart: 0Quantity:Price:$14.95Subtotal: -
UNI FILTER Filter - Honda CRF150R NU-4141ST
UNI FILTER
$37.95Stock air filters sacrifice performance and demand frequent replacement—this UNI FILTER gives your CRF150R superior airflow while remaining reusable for years. The two-stage design and Ultra Seal grease groove deliver consistent filtration without the...10110948- SKU:
- 10110948
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BASE COLOR:
- RED
- FILTER MEDIA MATERIAL:
- FOAM
- PRODUCT NAME:
- AIR FILTER
- FILTER SHAPE:
- ODD
- FEATURES:
- WASHABLE
- FILTER MEDIA STYLE:
- DUAL-LAYER
- FILTER SHAPE:
- ROUND
- MODEL:
- ULTRA-SEAL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- COMPETITION
- TYPE:
- STAGE II
- UNITS:
- EACH
$37.95 -
UNI FILTER Air Filter - Kawasaki KX250/450F NU-2399ST
UNI FILTER
$37.95Stock air filters restrict airflow and require frequent replacement—a costly cycle that impacts engine performance and your maintenance budget. The UNI FILTER NU-2399ST delivers superior filtration and airflow in a reusable design, meaning you clean it,...10110598- SKU:
- 10110598
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- FEATURES:
- WASHABLE
- FILTER MEDIA STYLE:
- DUAL-LAYER
- FILTER SHAPE:
- ODD
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STAGE II
- UNITS:
- EACH
- MODEL:
- ULTRA-SEAL
- PRODUCT NAME:
- AIR FILTER
- STYLE:
- COMPETITION
- BASE COLOR:
- RED
- FILTER MEDIA MATERIAL:
- FOAM
$37.95
