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Air and Fuel

Air and Fuel

Air and Fuel

Circle Track Fuel Cells, Pumps & Carburetors for Racing Engines at JJ Motorsports

Optimize your circle track racing setup with high-quality air and fuel components from JJ Motorsports. Our selection includes carburetors, fuel pumps, intake manifolds, fuel cells, and more, designed for maximum power, efficiency, and reliability in late models, modifieds, and street stocks. These durable parts ensure optimal fuel delivery and engine performance under intense racing conditions.

Shop trusted brands like JAZ Products and Pro/Cam. Explore related categories such as circle track engines and components for power upgrades or circle track suspension and components for handling enhancements.

Top Circle Track Air and Fuel Products

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
  • Main Jets (2)  HLY122-108

    Holley Main Jets (2) 122-108

    HOLLEY

    $15.76
    Proper jetting is fundamental to carburetor tuning—and these Holley main jets give you precise control over fuel metering in the mid-range and cruise portions of your engine's operation. Whether you're dialing in a street engine or optimizing a race carb...
    HLY122-108
    SKU:
    HLY122-108
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    122-108
    $15.76
    Qty in Cart: 0
    Quantity:
    Price:
    $15.76
    Subtotal:
  • Main Jets (2)  HLY122-107

    Holley Main Jets (2) 122-107

    HOLLEY

    $15.76
    Precise fuel delivery is the foundation of carburetor tuning, and the right main jet directly impacts your engine's power curve and throttle response. These Holley main jets are engineered to exact specifications for consistent air-fuel ratios across...
    HLY122-107
    SKU:
    HLY122-107
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    122-107
    $15.76
    Qty in Cart: 0
    Quantity:
    Price:
    $15.76
    Subtotal:
  • Main Jets (2)  HLY122-106

    Holley Main Jets (2) 122-106

    HOLLEY

    $15.76
    Proper jetting is fundamental to carburetor tuning—get it wrong, and you're leaving power on the table or risking a lean-running engine. These Holley Main Jets deliver precise fuel metering for your carb, ensuring the optimal air-fuel ratio across the...
    HLY122-106
    SKU:
    HLY122-106
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    122-106
    $15.76
    Qty in Cart: 0
    Quantity:
    Price:
    $15.76
    Subtotal:
  • Main Jets (2)  HLY122-105

    Holley Main Jets (2) 122-105

    HOLLEY

    $15.76
    Main jet sizing is critical to carburetor tuning—get it wrong, and you're leaving horsepower on the table or risking lean-out conditions that damage your engine. The Holley 122-105 main jets deliver precise fuel metering at cruise and part-throttle...
    HLY122-105
    SKU:
    HLY122-105
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    122-105
    $15.76
    Qty in Cart: 0
    Quantity:
    Price:
    $15.76
    Subtotal:
  • Main Jets (2)  HLY122-104

    Holley Main Jets (2) 122-104

    HOLLEY

    $15.76
    Fine-tune your Holley carburetor's fuel delivery with confidence using these precision-machined main jets. Whether you're chasing the perfect air/fuel ratio on the strip or dialing in your street build, the right jet size makes all the difference. Grab a...
    HLY122-104
    SKU:
    HLY122-104
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    122-104
    $15.76
    Qty in Cart: 0
    Quantity:
    Price:
    $15.76
    Subtotal:
  • Main Jets (2)  HLY122-103

    Holley Main Jets (2) 122-103

    HOLLEY

    $15.76
    Fine-tune your carburetor's fuel delivery and unlock the performance your engine deserves with these precision-crafted Holley Main Jets. Whether you're chasing that perfect air-fuel ratio on the strip or dialing in your daily driver, these brass jets...
    HLY122-103
    SKU:
    HLY122-103
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    122-103
    $15.76
    Qty in Cart: 0
    Quantity:
    Price:
    $15.76
    Subtotal:
  • Main Jets (2)  HLY122-102

    Holley Main Jets (2) 122-102

    HOLLEY

    $15.76
    Keep your Holley carburetor running at peak performance with these precision-crafted main jets — the small part that makes a massive difference in fuel delivery and engine response. Whether you're fine-tuning for the track or optimizing your street...
    HLY122-102
    SKU:
    HLY122-102
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    MFG Part #:
    122-102
    $15.76
    Qty in Cart: 0
    Quantity:
    Price:
    $15.76
    Subtotal:
  • Main Jets (2)  HLY122-101

    Holley Main Jets (2) 122-101

    HOLLEY

    $15.76
    Get your Holley carburetor running at peak performance with these precision-machined main jets. Whether you're fine-tuning your fuel mixture for the track or the street, these brass jets deliver consistent, reliable flow you can count on. Sold as a...
    HLY122-101
    SKU:
    HLY122-101
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    122-101
    $15.76
    Qty in Cart: 0
    Quantity:
    Price:
    $15.76
    Subtotal:
  • Main Jets (2)  HLY122-100

    Holley Main Jets (2) 122-100

    HOLLEY

    $15.76
    Proper jetting is fundamental to carburetor tuning—get it wrong and you're leaving horsepower on the table or running lean enough to damage your engine. These Holley main jets deliver the precise fuel metering your carb needs for optimal air-fuel ratio...
    HLY122-100
    SKU:
    HLY122-100
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    MFG Part #:
    122-100
    $15.76
    Qty in Cart: 0
    Quantity:
    Price:
    $15.76
    Subtotal:
  • Pump Discharge Nozzle  HLY121-42

    Holley Pump Discharge Nozzle 121-42

    HOLLEY

    $47.78
    The accelerator pump discharge nozzle is a critical component that directly affects throttle response and fuel delivery precision in Holley carburetors. A worn or damaged nozzle causes inconsistent fuel atomization, leading to hesitation during...
    HLY121-42
    SKU:
    HLY121-42
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    121-42
    $47.78
    Qty in Cart: 0
    Quantity:
    Price:
    $47.78
    Subtotal:
  • Pump Discharge Nozzle  HLY121-40

    Holley Pump Discharge Nozzle 121-40

    HOLLEY

    $45.64
    A properly functioning accelerator pump discharge nozzle is critical for consistent fuel atomization and throttle response in Holley carburetors. Over time, these nozzles wear, clog, or crack, causing hesitation, flat spots, and unpredictable...
    HLY121-40
    SKU:
    HLY121-40
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    MFG Part #:
    121-40
    $45.64
    Qty in Cart: 0
    Quantity:
    Price:
    $45.64
    Subtotal:
  • Pump Discharge Nozzle  HLY121-37

    Holley Pump Discharge Nozzle 121-37

    HOLLEY

    $45.64
    The accelerator pump is critical to fuel delivery response in any Holley carburetor, and a worn or damaged discharge nozzle will cause hesitation, flat spots, or inconsistent throttle response. This OEM Holley replacement nozzle restores proper fuel...
    HLY121-37
    SKU:
    HLY121-37
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    121-37
    $45.64
    Qty in Cart: 0
    Quantity:
    Price:
    $45.64
    Subtotal:
  • Pump Discharge Nozzle  HLY121-35

    Holley Pump Discharge Nozzle 121-35

    HOLLEY

    $42.64
    The accelerator pump in your Holley carburetor relies on precision fuel delivery during throttle transitions, and a worn or damaged discharge nozzle directly compromises that responsiveness. This OEM Holley replacement nozzle ensures consistent fuel...
    HLY121-35
    SKU:
    HLY121-35
    Availability:
    Ships Same Business Day
    Weight:
    0.01 LBS
    MFG Part #:
    121-35
    $42.64
    Qty in Cart: 0
    Quantity:
    Price:
    $42.64
    Subtotal:
  • Pump Discharge Nozzle  HLY121-31

    Holley Pump Discharge Nozzle 121-31

    HOLLEY

    $44.79
    The accelerator pump discharge nozzle is a critical component for precise fuel delivery during acceleration. A worn or incorrect nozzle diameter disrupts your carburetor's air-fuel mixture at the moment you need it most, causing hesitation and flat spots...
    HLY121-31
    SKU:
    HLY121-31
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    121-31
    $44.79
    Qty in Cart: 0
    Quantity:
    Price:
    $44.79
    Subtotal:
  • Pump Discharge Nozzle  HLY121-28

    Holley Pump Discharge Nozzle 121-28

    HOLLEY

    $44.79
    The accelerator pump discharge nozzle is a critical component in Holley carburetor systems, delivering precise fuel atomization during throttle transitions. A worn or incorrect nozzle will cause hesitation, bog, and unpredictable throttle response—issues...
    HLY121-28
    SKU:
    HLY121-28
    Availability:
    Ships Same Business Day
    Weight:
    0.03 LBS
    MFG Part #:
    121-28
    $44.79
    Qty in Cart: 0
    Quantity:
    Price:
    $44.79
    Subtotal:
  • Pump Discharge Nozzle  HLY121-25

    Holley Pump Discharge Nozzle 121-25

    HOLLEY

    $44.79
    A worn or undersized accelerator pump discharge nozzle will rob your carburetor of crisp throttle response and consistent fuel delivery off the line. The Holley 121-25 is a precision-engineered replacement that restores proper atomization and tuning...
    HLY121-25
    SKU:
    HLY121-25
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    121-25
    $44.79
    Qty in Cart: 0
    Quantity:
    Price:
    $44.79
    Subtotal:
  • Pump Discharge Nozzle  HLY121-150

    Holley Pump Discharge Nozzle 121-150

    HOLLEY

    $27.30
    A properly functioning accelerator pump discharge nozzle is critical for consistent fuel delivery and throttle response in Holley carburetors. Without precision tuning at this component level, you'll experience flat spots off the line or erratic fuel...
    HLY121-150
    SKU:
    HLY121-150
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    MFG Part #:
    121-150
    $27.30
    Qty in Cart: 0
    Quantity:
    Price:
    $27.30
    Subtotal:
  • Pump Discharge Nozzle  HLY121-145

    Holley Pump Discharge Nozzle 121-145

    HOLLEY

    $27.30
    The accelerator pump discharge nozzle is a critical component that directly affects throttle response and fuel atomization in your Holley carburetor. A worn or improper nozzle creates dead spots during acceleration and compromises the precision fuel...
    HLY121-145
    SKU:
    HLY121-145
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    MFG Part #:
    121-145
    $27.30
    Qty in Cart: 0
    Quantity:
    Price:
    $27.30
    Subtotal:
  • Pump Discharge Nozzle  HLY121-140

    Holley Pump Discharge Nozzle 121-140

    HOLLEY

    $24.75
    A worn or missing accelerator pump discharge nozzle will compromise fuel delivery consistency and throttle response in your Holley carb—leaving you with flat spots and unpredictable power delivery on the strip or street. This OEM Holley nozzle restores...
    HLY121-140
    SKU:
    HLY121-140
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    MFG Part #:
    121-140
    $24.75
    Qty in Cart: 0
    Quantity:
    Price:
    $24.75
    Subtotal:
  • Pump Discharge Nozzle  HLY121-137

    Holley Pump Discharge Nozzle 121-137

    HOLLEY

    $24.75
    The accelerator pump discharge nozzle is a critical component for consistent fuel atomization and precise throttle response in Holley carburetors. A worn or incorrect nozzle directly impacts cold-start performance, transition off-idle, and overall...
    HLY121-137
    SKU:
    HLY121-137
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    121-137
    $24.75
    Qty in Cart: 0
    Quantity:
    Price:
    $24.75
    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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