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Dirt Bike Air and Fuel

Dirt Bike Air and Fuel

Dirt Bike Air and Fuel

Dirt Bike Air & Fuel Systems at JJ Motorsports

Optimize your bike’s performance with high-quality air and fuel components from JJ Motorsports. Browse air filters, carburetors, and fuel system parts engineered to deliver clean airflow and a consistent fuel mix for peak efficiency. Ensure your bike runs smoothly by pairing these with other essential off-road dirt bike accessories.

Shop trusted brands like Motion Pro for cables and Uni Filter for high-flow filters. Explore related categories such as Dirt Bike Engine Parts for rebuilds or Dirt Bike Exhaust for complete tuning.

Top Dirt Bike Air & Fuel Products

Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • UNI FILTER Air Filter - Maico All Models '34-'79 NU-1201ST

    UNI FILTER Air Filter - Maico All Models '34-'79 NU-1201ST

    UNI FILTER

    $37.95
    Stock air filters restrict airflow and require frequent replacement—a UNI FILTER gives you superior filtration without sacrificing breathing room. The two-stage design separates for thorough cleaning, and the reusable construction eliminates disposable...
    10112511
    SKU:
    10112511
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    FILTER MEDIA MATERIAL:
    FOAM
    FILTER SHAPE:
    CYLINDER
    BASE COLOR:
    RED
    PRODUCT NAME:
    AIR FILTER
    UNITS:
    EACH
    FILTER MEDIA STYLE:
    DUAL-LAYER
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    STREET
    STYLE:
    STANDARD
    FEATURES:
    WASHABLE
    MODEL:
    ULTRA-SEAL
    TYPE:
    STAGE II
    $37.95
    Qty in Cart: 0
    Quantity:
    Price:
    $37.95
    Subtotal:
  • UNI FILTER Air Filter - Yamaha YZ125 '79 NU-2243ST

    UNI FILTER Air Filter - Yamaha YZ125 '79 NU-2243ST

    UNI FILTER

    $33.95
    A quality air filter is non-negotiable for YZ125 performance—it directly impacts throttle response, engine longevity, and power delivery. The UNI Filter NU-2243ST delivers superior airflow while maintaining effective dirt separation, all while remaining...
    10112518
    SKU:
    10112518
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    FILTER MEDIA MATERIAL:
    FOAM
    FILTER SHAPE:
    CYLINDER
    COLOR/FINISH:
    RED
    FILTER MEDIA STYLE:
    DUAL-LAYER
    BASE COLOR:
    RED
    UNITS:
    EACH
    FEATURES:
    WASHABLE
    MODEL:
    ULTRA-SEAL
    PRODUCT NAME:
    AIR FILTER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    STAGE II
    $33.95
    Qty in Cart: 0
    Quantity:
    Price:
    $33.95
    Subtotal:
  • UNI FILTER Air Filter - Yamaha '73-'74 NU-2212

    UNI FILTER Air Filter - Yamaha '73-'74 NU-2212

    UNI FILTER

    $35.95
    Stock air filters restrict airflow and require frequent replacement—the UNI FILTER NU-2212 eliminates both issues with a reusable two-stage design that delivers superior filtration and airflow for your '73-'74 Yamaha. By switching to a high-flow filter...
    10112520
    SKU:
    10112520
    Availability:
    Ships Same Business Day
    Weight:
    0.27 LBS
    FILTER MEDIA MATERIAL:
    FOAM
    FILTER SHAPE:
    CYLINDER
    COLOR/FINISH:
    YELLOW
    FILTER MEDIA STYLE:
    DUAL-LAYER
    RIDING STYLE:
    STREET
    BASE COLOR:
    YELLOW
    UNITS:
    EACH
    FEATURES:
    WASHABLE
    MODEL:
    ULTRA-SEAL
    PRODUCT NAME:
    AIR FILTER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    STAGE II
    $35.95
    Qty in Cart: 0
    Quantity:
    Price:
    $35.95
    Subtotal:
  • UNI FILTER Air Filter - Yamaha NU-2241ST

    UNI FILTER Air Filter - Yamaha NU-2241ST

    UNI FILTER

    $35.95
    Stock air filters sacrifice airflow for mediocre filtration—this UNI FILTER delivers both. The two-stage design maximizes intake volume while trapping dirt more effectively than OEM filters, giving your Yamaha the breathing room it needs for consistent...
    10112524
    SKU:
    10112524
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    COLOR/FINISH:
    RED
    FILTER MEDIA STYLE:
    DUAL-LAYER
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    FEATURES:
    WASHABLE
    MODEL:
    ULTRA-SEAL
    PRODUCT NAME:
    AIR FILTER
    RIDING STYLE:
    OFF-ROAD
    FILTER SHAPE:
    OVAL
    TYPE:
    STAGE II
    BASE COLOR:
    RED
    FILTER MEDIA MATERIAL:
    FOAM
    $35.95
    Qty in Cart: 0
    Quantity:
    Price:
    $35.95
    Subtotal:
  • UNI FILTER Air Filter NU-1418ST

    UNI FILTER Air Filter NU-1418ST

    UNI FILTER

    $37.95
    The UNI FILTER NU-1418ST delivers superior airflow and filtration without sacrificing engine breathing—a critical advantage whether you're pushing your engine on the track or maximizing daily driver efficiency. Unlike disposable filters, this two-stage...
    10112478
    SKU:
    10112478
    Availability:
    Ships Same Business Day
    Weight:
    0.18 LBS
    FEATURES:
    WASHABLE
    FILTER SHAPE:
    RECTANGULAR
    FILTER SHAPE:
    ROUND
    MODEL:
    ULTRA-SEAL
    PRODUCT NAME:
    AIR FILTER
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    STAGE II
    BASE COLOR:
    RED
    UNITS:
    EACH
    FILTER MEDIA STYLE:
    DUAL-LAYER
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    STYLE:
    STANDARD
    FILTER MEDIA MATERIAL:
    FOAM
    $37.95
    Qty in Cart: 0
    Quantity:
    Price:
    $37.95
    Subtotal:
  • PARTS UNLIMITED Mikuni Plug - 10-Pack 1009-0002

    PARTS UNLIMITED Mikuni Plug - 10-Pack 1009-0002

    PARTS UNLIMITED

    $15.11
    Reliable fuel system connectivity is critical for consistent engine performance and proper carburetor operation. The PARTS UNLIMITED Mikuni Plug ensures secure, corrosion-resistant connections that won't fail during high-demand riding or racing...
    10090002
    SKU:
    10090002
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    MATERIAL:
    BRASS
    PRODUCT NAME:
    PLUG
    UNITS:
    10 PACK
    RIDING STYLE:
    WATERCRAFT
    STYLE:
    MIKUNI
    Qty in Cart: 0
    Quantity:
    Price:
    $15.11
    Subtotal:
  • On Sale
    OUTERWEARS Water Repellent Pre-Filter - Black 20-3214-01

    OUTERWEARS Water Repellent Pre-Filter - Black 20-3214-01

    OUTERWEARS

    MSRP: $21.95
    Now: $14.00
    Was: $21.95
    Engine air filters are only as effective as what reaches them—water and fine particulates degrade filter performance and accelerate engine wear. The OUTERWEARS Water Repellent Pre-Filter intercepts moisture, dirt, and sand before they contact your...
    10114391
    SKU:
    10114391
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    BASE COLOR:
    BLACK
    FEATURES:
    WATER RESISTANT
    PRODUCT NAME:
    PRE-FILTER
    RIDING STYLE:
    OFF-ROAD
    COLOR/FINISH:
    BLACK
    MATERIAL:
    POLYESTER
    UNITS:
    EACH
    MSRP: $21.95
    Now: $14.00
    Was: $21.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $21.95
    Now: $14.00
    Was: $21.95
    Subtotal:
  • PARTS UNLIMITED Fuel Filter - 6mm T03-6333

    PARTS UNLIMITED Fuel Filter - 6mm T03-6333

    PARTS UNLIMITED

    $65.10
    A quality fuel filter is non-negotiable for maintaining fuel system integrity and protecting injectors from contamination. The PARTS UNLIMITED T03-6333 delivers reliable filtration across multiple fuel types, making it an essential upgrade for both...
    07070066
    SKU:
    07070066
    Availability:
    Ships Same Business Day
    Weight:
    0.85 LBS
    BASE COLOR:
    CLEAR
    BODY LENGTH IMPERIAL:
    2-3/8'
    COLOR/FINISH:
    TRANSPARENT
    FOR FUEL LINE SIZE IMPERIAL:
    1/4'
    RIDING STYLE:
    STREET
    UNITS:
    20 PACK
    MICRON RATING:
    70 MICRONS
    RIDING STYLE:
    ADVENTURE TOURING / DUAL-SPORT
    RIDING STYLE:
    UTV
    RIDING STYLE:
    WATERCRAFT
    TYPE:
    INLINE
    FILTER MEDIA MATERIAL:
    PAPER
    PRODUCT NAME:
    FUEL FILTER
    RIDING STYLE:
    ATV
    RIDING STYLE:
    OFF-ROAD
    RIDING STYLE:
    SNOW
    STYLE:
    UNIVERSAL
    Qty in Cart: 0
    Quantity:
    Price:
    $65.10
    Subtotal:
  • MOOSE RACING Acceleration Pump Rebuild Kit 46-3007

    MOOSE RACING Acceleration Pump Rebuild Kit 46-3007

    MOOSE RACING

    $25.20
    A sticky or malfunctioning air cut-off valve creates hesitation, popping on deceleration, and unpredictable running conditions that compromise both performance and reliability. This rebuild kit restores proper valve operation, eliminating deceleration...
    10031443
    SKU:
    10031443
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    ACCELERATOR PUMP
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $25.20
    Qty in Cart: 0
    Quantity:
    Price:
    $25.20
    Subtotal:
  • MOOSE RACING Air Cut-Off Valve Rebuild Kit 46-4001

    MOOSE RACING Air Cut-Off Valve Rebuild Kit 46-4001

    MOOSE RACING

    $25.20
    A stuck or malfunctioning air cut-off valve compromises carburetor performance, leading to hesitation, popping on deceleration, and erratic idle conditions. This rebuild kit restores proper valve operation with OEM-quality components, eliminating the...
    10031445
    SKU:
    10031445
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    REBUILD KIT
    TYPE:
    ACCELERATOR PUMP
    $25.20
    Qty in Cart: 0
    Quantity:
    Price:
    $25.20
    Subtotal:
  • MOOSE RACING Air Cut-Off Valve Rebuild Kit 46-4003

    MOOSE RACING Air Cut-Off Valve Rebuild Kit 46-4003

    MOOSE RACING

    $25.20
    A stuck or malfunctioning air cut-off valve compromises fuel atomization and creates stumbling, popping, or rough idle conditions that no tuning adjustment can fix. This rebuild kit restores proper valve operation, eliminating deceleration backfiring and...
    10031447
    SKU:
    10031447
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    AIR CUT-OFF
    UNITS:
    KIT
    PRODUCT NAME:
    REBUILD KIT
    $25.20
    Qty in Cart: 0
    Quantity:
    Price:
    $25.20
    Subtotal:
  • MOOSE RACING Carburetor Repair Kit - Yamaha 26-1302

    MOOSE RACING Carburetor Repair Kit - Yamaha 26-1302

    MOOSE RACING

    $77.72
    Carburetor degradation is inevitable on any Yamaha machine that sees regular use, and worn gaskets, failed float valves, and clogged jets will tank your performance and fuel efficiency. This MOOSE RACING rebuild kit supplies every internal component you...
    10030827
    SKU:
    10030827
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    TYPE:
    CARBURETOR
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    PRODUCT NAME:
    REPAIR KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $77.72
    Subtotal:
  • MOOSE RACING Carburetor Repair Kit - Honda 26-1461

    MOOSE RACING Carburetor Repair Kit - Honda 26-1461

    MOOSE RACING

    $60.55
    A carburetor that's lost its seal will cost you power, fuel economy, and reliability on the track or trail. This complete Moose Racing rebuild kit supplies OEM-quality gaskets, O-rings, float valves, and jets—the exact components you need to restore your...
    10030874
    SKU:
    10030874
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CARBURETOR
    UNITS:
    KIT
    PRODUCT NAME:
    REPAIR KIT
    $60.55
    Qty in Cart: 0
    Quantity:
    Price:
    $60.55
    Subtotal:
  • MOOSE RACING Carburetor Repair Kit - Suzuki 26-1130

    MOOSE RACING Carburetor Repair Kit - Suzuki 26-1130

    MOOSE RACING

    $59.54
    Carburetor performance degrades over time as gaskets harden, O-rings crack, and jets accumulate fuel varnish—leaving your engine running lean, hesitating on throttle, or failing to start reliably. The MOOSE RACING Carburetor Repair Kit supplies OEM-grade...
    10030736
    SKU:
    10030736
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    TYPE:
    CARBURETOR
    UNITS:
    KIT
    PRODUCT NAME:
    REPAIR KIT
    RIDING STYLE:
    STREET
    $59.54
    Qty in Cart: 0
    Quantity:
    Price:
    $59.54
    Subtotal:
  • MOOSE RACING Carburetor Repair Kit - KTM 26-1517

    MOOSE RACING Carburetor Repair Kit - KTM 26-1517

    MOOSE RACING

    $33.28
    A worn or deteriorating carburetor can leave power on the table and create inconsistent throttle response on your KTM. This complete rebuild kit contains every gasket, O-ring, float valve, and jet you need to restore your OEM carburetor to factory...
    10030905
    SKU:
    10030905
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CARBURETOR
    PRODUCT NAME:
    REPAIR KIT
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    $33.28
    Qty in Cart: 0
    Quantity:
    Price:
    $33.28
    Subtotal:
  • MOOSE RACING Carburetor Repair Kit - Yamaha 26-1139

    MOOSE RACING Carburetor Repair Kit - Yamaha 26-1139

    MOOSE RACING

    $45.40
    A worn or degraded carburetor can rob your engine of fuel efficiency and throttle response, leaving performance on the table. This MOOSE RACING rebuild kit supplies OEM-equivalent gaskets, O-rings, float valves, and jets—the exact components your...
    10030743
    SKU:
    10030743
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    PRODUCT NAME:
    REPAIR KIT
    TYPE:
    CARBURETOR
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $45.40
    Qty in Cart: 0
    Quantity:
    Price:
    $45.40
    Subtotal:
  • MOOSE RACING Carburetor Repair Kit - Honda 26-1190

    MOOSE RACING Carburetor Repair Kit - Honda 26-1190

    MOOSE RACING

    $46.41
    Carburetor performance depends on fuel delivery precision, and worn gaskets, O-rings, and jets compromise both idle quality and throttle response. This MOOSE RACING rebuild kit supplies OEM-grade components sourced from the same manufacturers that supply...
    10030788
    SKU:
    10030788
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    PRODUCT NAME:
    REPAIR KIT
    TYPE:
    CARBURETOR
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $46.41
    Qty in Cart: 0
    Quantity:
    Price:
    $46.41
    Subtotal:
  • MOOSE RACING Carburetor Repair Kit - Honda 26-1442

    MOOSE RACING Carburetor Repair Kit - Honda 26-1442

    MOOSE RACING

    $59.54
    A worn or failing carburetor compromises fuel atomization, throttle response, and engine reliability—issues that can't be ignored whether you're track-focused or maintaining a vintage build. This MOOSE RACING Carburetor Repair Kit supplies OEM-equivalent...
    10030866
    SKU:
    10030866
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    REPAIR KIT
    TYPE:
    CARBURETOR
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $59.54
    Qty in Cart: 0
    Quantity:
    Price:
    $59.54
    Subtotal:
  • MOOSE RACING Carburetor Repair Kit - Yamaha 26-1527

    MOOSE RACING Carburetor Repair Kit - Yamaha 26-1527

    MOOSE RACING

    $50.45
    A worn or deteriorating carburetor compromises fuel atomization, throttle response, and engine reliability—especially critical for racing applications where precision fueling directly impacts performance. This complete Moose Racing rebuild kit supplies...
    10030912
    SKU:
    10030912
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    REPAIR KIT
    RIDING STYLE:
    OFF-ROAD
    TYPE:
    CARBURETOR
    UNITS:
    KIT
    Qty in Cart: 0
    Quantity:
    Price:
    $50.45
    Subtotal:
  • MOOSE RACING Carburetor Repair Kit - Yamaha 26-1528

    MOOSE RACING Carburetor Repair Kit - Yamaha 26-1528

    MOOSE RACING

    $46.41
    Carburetor performance directly impacts throttle response, fuel delivery, and overall engine reliability—worn gaskets and degraded seals compromise all three. This MOOSE RACING Carburetor Repair Kit gives you OEM-equivalent components without the expense...
    10030913
    SKU:
    10030913
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    PRODUCT NAME:
    REPAIR KIT
    TYPE:
    CARBURETOR
    RIDING STYLE:
    OFF-ROAD
    UNITS:
    KIT
    $46.41
    Qty in Cart: 0
    Quantity:
    Price:
    $46.41
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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