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Fittings and Plugs

Fittings and Plugs

Fittings and Plugs

Circle Track AN/NPT Fittings & Plugs at JJ Motorsports

Achieve precision and reliability with fittings and plugs designed for high-pressure applications from JJ Motorsports. These components are essential for creating secure, leak-free connections in fuel, oil, and fluid lines, keeping your circle track car in peak condition. Integrate them with other specialized high-performance components to elevate your setup.

Shop trusted brands like Fragola for push-lock fittings, Aeroquip for bulkhead options, JJ Motorsports for custom kits, and Allstar Performance for versatile solutions. Explore related categories such as Hose Ends for secure connections or Cap and Plug Fittings for sealing needs.

Top Circle Track AN/NPT Fittings & Plugs

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
  • Adapt. #8 Flare X 1/2npt Black XRP981688BB

    XRP Adapt. #8 Flare X 1/2npt Black XRP981688BB

    XRP-XTREME RACING PROD.

    $7.79
    When you're plumbing a custom fuel, oil, or coolant system, you need fittings that won't leak under pressure—and that mate different thread standards reliably. This XRP adapter bridges AN and NPT ports with precision-engineered aluminum construction,...
    XRP981688BB
    SKU:
    XRP981688BB
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    981688BB
    $7.79
    Qty in Cart: 0
    Quantity:
    Price:
    $7.79
    Subtotal:
  • Adapt. #8 Flare X 1/2npt  XRP981688

    XRP Adapt. #8 Flare X 1/2npt XRP981688

    XRP-XTREME RACING PROD.

    $7.79
    When you're building or modifying a fuel system, brake line setup, or custom cooling circuit, reliable adapter fittings are non-negotiable. This XRP adapter bridges the gap between AN fittings and NPT threaded ports without compromise—critical when OEM...
    XRP981688
    SKU:
    XRP981688
    Availability:
    Ships Same Business Day
    Weight:
    0.09 LBS
    MFG Part #:
    981688
    $7.79
    Qty in Cart: 0
    Quantity:
    Price:
    $7.79
    Subtotal:
  • #8 Ext. Oil Inlet Male Flare to 1/4 NPT Fitting XRP981687

    XRP #8 Ext. Oil Inlet Male Flare to 1/4 NPT Fitting XRP981687

    XRP-XTREME RACING PROD.

    $19.49
    If you're running forced induction or upgrading your oil system, you need fittings that won't leak under pressure. The XRP #8 Ext. Oil Inlet Male Flare to 1/4 NPT Fitting delivers a reliable adapter for connecting high-flow oil lines to NPT-threaded...
    XRP981687
    SKU:
    XRP981687
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    MFG Part #:
    981687
    $19.49
    Qty in Cart: 0
    Quantity:
    Price:
    $19.49
    Subtotal:
  • Adapter #6 Flr X 1/2 Npt Black XRP981668BB

    XRP Adapter #6 Flr X 1/2 Npt Black XRP981668BB

    XRP-XTREME RACING PROD.

    $7.79
    When you're running custom fuel, coolant, or hydraulic lines, adapter fittings are non-negotiable—they ensure leak-free connections between different port standards and prevent costly system failures. This XRP straight adapter bridges the gap between AN...
    XRP981668BB
    SKU:
    XRP981668BB
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    MFG Part #:
    981668BB
    $7.79
    Qty in Cart: 0
    Quantity:
    Price:
    $7.79
    Subtotal:
  • Adapter #6 Flr X 1/2 Npt  XRP981668

    XRP Adapter #6 Flr X 1/2 Npt XRP981668

    XRP-XTREME RACING PROD.

    $7.79
    If you're integrating AN fuel, oil, or coolant lines into a system with NPT ports, you need a fitting that won't leak under pressure. The XRP Adapter #6 Flr X 1/2 Npt delivers a straightforward, reliable connection between -6 AN and 1/2" NPT Male...
    XRP981668
    SKU:
    XRP981668
    Availability:
    Ships Same Business Day
    Weight:
    0.07 LBS
    MFG Part #:
    981668
    $7.79
    Qty in Cart: 0
    Quantity:
    Price:
    $7.79
    Subtotal:
  • Adapt. #6 Flare X 3/8npt Black XRP981666BB

    XRP Adapt. #6 Flare X 3/8npt Black XRP981666BB

    XRP-XTREME RACING PROD.

    $5.49
    This XRP adapter bridges the gap between modern AN-style plumbing and legacy NPT threads, eliminating the need for costly custom fabrication or jury-rigged solutions. Whether you're integrating aftermarket fuel systems, turbo lines, or brake components...
    XRP981666BB
    SKU:
    XRP981666BB
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    981666BB
    $5.49
    Qty in Cart: 0
    Quantity:
    Price:
    $5.49
    Subtotal:
  • Adapt. #6 Flare X 3/8npt  XRP981666

    XRP Adapt. #6 Flare X 3/8npt XRP981666

    XRP-XTREME RACING PROD.

    $4.99
    When building or modifying a fuel system, brake line setup, or custom coolant circuit, you need fittings that reliably bridge different thread standards without leaks or complications. This XRP adapter provides a straightforward solution for connecting 6...
    XRP981666
    SKU:
    XRP981666
    Availability:
    Ships Same Business Day
    Weight:
    0.06 LBS
    MFG Part #:
    981666
    $4.99
    Qty in Cart: 0
    Quantity:
    Price:
    $4.99
    Subtotal:
  • Adapter Fitting #6 to 1/8npt Black XRP981662BB

    XRP Adapter Fitting #6 to 1/8npt Black XRP981662BB

    XRP-XTREME RACING PROD.

    $5.29
    If you're running custom fuel, oil, or coolant lines in your build, you need reliable adapter fittings that won't leak under pressure. This XRP straight adapter bridges the gap between -6 AN hose fittings and 1/8" NPT ports—a common requirement when...
    XRP981662BB
    SKU:
    XRP981662BB
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    981662BB
    Qty in Cart: 0
    Quantity:
    Price:
    $5.29
    Subtotal:
  • Adapt. #6 Flare X 1/8npt  XRP981662

    XRP Adapt. #6 Flare X 1/8npt XRP981662

    XRP-XTREME RACING PROD.

    $4.99
    If you're running AN-plumbed fuel, coolant, or brake systems, you need reliable adapters that won't leak under pressure. This XRP adapter bridges the gap between -6 AN and NPT threaded ports, eliminating the need for custom fabrication or improvised...
    XRP981662
    SKU:
    XRP981662
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    981662
    $4.99
    Qty in Cart: 0
    Quantity:
    Price:
    $4.99
    Subtotal:
  • Alum. 3/8in Male NPT To -4 AN Male Adapter XRP981646

    XRP Alum. 3/8in Male NPT To -4 AN Male Adapter XRP981646

    XRP-XTREME RACING PROD.

    $11.99
    When you're running fuel, coolant, or fluid lines in a forced induction or high-performance application, adapter compatibility is non-negotiable. The XRP 981646 bridges the gap between -4 AN fittings and 3/8" NPT ports without compromise, offering a...
    XRP981646
    SKU:
    XRP981646
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    981646
    $11.99
    Qty in Cart: 0
    Quantity:
    Price:
    $11.99
    Subtotal:
  • Adapt. #4 Flare X 1/4npt Black XRP981644BB

    XRP Adapt. #4 Flare X 1/4npt Black XRP981644BB

    XRP-XTREME RACING PROD.

    $4.69
    When you're running a high-performance fuel, oil, or coolant system, adapter fittings are non-negotiable—they ensure leak-free connections between incompatible line sizes and thread types. This XRP adapter bridges the gap between 4 AN male fittings and...
    XRP981644BB
    SKU:
    XRP981644BB
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    981644BB
    $4.69
    Qty in Cart: 0
    Quantity:
    Price:
    $4.69
    Subtotal:
  • Adapt. #4 Flare X 1/4npt  XRP981644

    XRP Adapt. #4 Flare X 1/4npt XRP981644

    XRP-XTREME RACING PROD.

    $4.69
    When you're building or modifying a fuel system, brake line configuration, or custom fluid routing setup, mismatched fitting standards create leak points and system failures. This XRP adapter bridges the gap between AN and NPT components, giving you a...
    XRP981644
    SKU:
    XRP981644
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    MFG Part #:
    981644
    Qty in Cart: 0
    Quantity:
    Price:
    $4.69
    Subtotal:
  • #3 Flare X 1/4in Npt Adapt. XRP981634

    XRP #3 Flare X 1/4in Npt Adapt. XRP981634

    XRP-XTREME RACING PROD.

    $16.99
    When you're building a custom fuel, coolant, or hydraulic system, mismatched fittings create leaks and failures that compromise performance and safety. The XRP #3 Flare X 1/4in NPT Adapter bridges the gap between AN and NPT components, giving you the...
    XRP981634
    SKU:
    XRP981634
    Availability:
    Ships Same Business Day
    Weight:
    0.04 LBS
    MFG Part #:
    981634
    $16.99
    Qty in Cart: 0
    Quantity:
    Price:
    $16.99
    Subtotal:
  • #20 Flare X 1in Npt Adapt. XRP981621

    XRP #20 Flare X 1in Npt Adapt. XRP981621

    XRP-XTREME RACING PROD.

    $52.99
    If you're running a high-performance fuel, oil, or coolant system, you need reliable adapters that won't leak under pressure. This XRP straight adapter bridges the gap between AN and NPT fittings with precision engineering, allowing you to integrate...
    XRP981621
    SKU:
    XRP981621
    Availability:
    Ships Same Business Day
    Weight:
    0.26 LBS
    MFG Part #:
    981621
    $52.99
    Qty in Cart: 0
    Quantity:
    Price:
    $52.99
    Subtotal:
  • Adapter Fitting #16 to 1in-npt Black XRP981616BB

    XRP Adapter Fitting #16 to 1in-npt Black XRP981616BB

    XRP-XTREME RACING PROD.

    $21.99
    When you're running custom fuel, oil, or coolant lines, port compatibility becomes critical—and this XRP adapter fitting bridges the gap between AN and NPT standards seamlessly. The straight-through design minimizes turbulence and pressure loss, while...
    XRP981616BB
    SKU:
    XRP981616BB
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    MFG Part #:
    981616BB
    $21.99
    Qty in Cart: 0
    Quantity:
    Price:
    $21.99
    Subtotal:
  • Adapt. #12 Flare X 1/2np Black XRP981614BB

    XRP Adapt. #12 Flare X 1/2np Black XRP981614BB

    XRP-XTREME RACING PROD.

    $13.99
    If you're running a high-performance fuel system, brake line setup, or custom plumbing that requires mixing modern -12 AN fittings with NPT threaded ports, this adapter eliminates guesswork and ensures leak-free connections. The black anodized aluminum...
    XRP981614BB
    SKU:
    XRP981614BB
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    MFG Part #:
    981614BB
    Qty in Cart: 0
    Quantity:
    Price:
    $13.99
    Subtotal:
  • Adapt. #12 Flare X 1/2np  XRP981614

    XRP Adapt. #12 Flare X 1/2np XRP981614

    XRP-XTREME RACING PROD.

    $12.99
    If you're integrating NPT port components into your high-performance fuel or coolant system, this adapter ensures a leak-free connection without custom fabrication. The XRP straight adapter bridges the gap between -12 AN and 1/2" NPT fittings, giving you...
    XRP981614
    SKU:
    XRP981614
    Availability:
    Ships Same Business Day
    Weight:
    0.10 LBS
    MFG Part #:
    981614
    $12.99
    Qty in Cart: 0
    Quantity:
    Price:
    $12.99
    Subtotal:
  • Adapter Fitting - #10 to 3/4npt Black XRP981613BB

    XRP Adapter Fitting - #10 to 3/4npt Black XRP981613BB

    XRP-XTREME RACING PROD.

    $13.49
    When you're building a custom cooling, fuel, or pneumatic system, mismatched fittings create leaks, pressure loss, and wasted time troubleshooting. This XRP adapter fitting bridges the gap between AN and NPT threaded components, allowing you to integrate...
    XRP981613BB
    SKU:
    XRP981613BB
    Availability:
    Ships Same Business Day
    Weight:
    0.12 LBS
    MFG Part #:
    981613BB
    $13.49
    Qty in Cart: 0
    Quantity:
    Price:
    $13.49
    Subtotal:
  • Adapt. #10 Flare X 3/4np  XRP981613

    XRP Adapt. #10 Flare X 3/4np XRP981613

    XRP-XTREME RACING PROD.

    $12.99
    When you're building or upgrading a high-performance fuel, oil, or coolant system, thread compatibility can make or break your installation. This XRP adapter bridges the gap between AN and NPT fittings, giving you the flexibility to integrate quality...
    XRP981613
    SKU:
    XRP981613
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    MFG Part #:
    981613
    $12.99
    Qty in Cart: 0
    Quantity:
    Price:
    $12.99
    Subtotal:
  • Adapt. #12 Flare X 3/4np Black XRP981612BB

    XRP Adapt. #12 Flare X 3/4np Black XRP981612BB

    XRP-XTREME RACING PROD.

    $13.49
    If you're running custom fuel, oil, or coolant lines in your build, you need reliable adapters that maintain system integrity under pressure. This XRP adapter bridges the gap between AN fittings and NPT ports, giving you the flexibility to work with...
    XRP981612BB
    SKU:
    XRP981612BB
    Availability:
    Ships Same Business Day
    Weight:
    0.12 LBS
    MFG Part #:
    981612BB
    $13.49
    Qty in Cart: 0
    Quantity:
    Price:
    $13.49
    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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