SKU: 30997536791

XP-Series Carburetor 500CFM Circle Track Alcohol - XP-4412-A

Sale price$437.83 Regular price$486.48
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Ships within 48 hours · Estimated delivery Aug 2 - Aug 7

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Description

XP-Series Carburetor 500CFM Circle Track Alcohol - XP-4412-AOverview: In circle track classes that mandate two barrel carburetors, customizing a street carburetor has been the norm for decades. Not anymore. Designed from the ground up to meet the unique demands of circle track racing, QFT's new XP Series offers the performance benefits of a custom carburetor in an affordable, turnkey, class legal package. At a bare minimum, modifying a standard street carburetor for circle track duty typically involves

Overview:

In circle track classes that mandate two-barrel carburetors, customizing a street carburetor has been the norm for decades. Not anymore. Designed from the ground up to meet the unique demands of circle track racing, QFT's new XP-Series offers the performance benefits of a custom carburetor in an affordable, turnkey, class-legal package. At a bare minimum, modifying a standard street carburetor for circle track duty typically involves changing the throttle-plates, floats, and metering blocks. These custom modifications can easily exceed the cost of a turnkey QFT two-barrel carb while still lacking many of the key features that only a clean-sheet redesign can offer. A high-flow aluminum main body design centers the venturi over the throttle-body assembly. To further increase airflow, QFT centers the air horn over the venturi, removes the choke tower, and carefully profiles the air inlet transition. The result is enhanced airflow and fuel distribution, which improves throttle-response and horsepower. All XP-Series carburetors are equipped with roller bearing seals which provide smoother throttle response, less wear on shaft, and longer life. Available in 500- and 600 cfm sizes, the XP-Series sets a new standard in two-barrel circle track carbs. High-flow aluminum main body with centered venturi for improved performance and better air/fuel distribution Black anodized billet 2-Circuit metering block and throttle body Throttle body incorporates roller bearing seals which provide smoother operation, less wear on shaft, and longer life Anti-siphon check valve in main body to reduce pump pull-over Changeable emulsion bleeds and power valve channel restrictions for better tuning capabilities Dual inlet fuel bowl with #8AN fittings Dual sight glass windows for easy float adjustment Single wedge circle track float Exclusive Black Diamond® coating for enhanced corrosion protection and appearance. Provides a 6% reduction in fuel temperature.

Features:

     

    Application:

    Year Make Model Submodel Engine Size
    Universal

     

    Specs:

    Barrels 2
    Billet Color Black
    Booster Straight
    Brand Quick Fuel
    Carburetor Use Professional Race
    CFM 500
    Choke None
    Circuit 2
    Condition New
    Emission Code 3
    Finish Black
    Fuel Methanol
    Fuel System Carbureted
    High Speed Air Bleed 31
    Idle Air Bleed Size 55
    Marine Use No
    Material Aluminum
    Model XP-Series
    Primary Main Jet 128
    Primary Power Valve 45
    Primary Pump Nozzle Size 55
    Product Type Carburetor
    Secondaries None
    Secondary Main Jet N/A
    Supercharged Application No
    Throttle Bore 1-11/16 inch
    Warning California Proposition 65
    Warranty Limited 90 Day
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 30997536791

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    4.1 ★★★★★
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    Harvey
    Charlottesville, US
    ★★★★★ 5
    Good stuff, but watch the temp
    Model: NewSLS50_52
    I used this in my single cab pickup truck (89 ford.) It only took half the box (10 sheets or 25 square feet) to do the floors, but I bought the big box because I plan to do the doors, back wall, and maybe the roof as well. One thing I learned is that the temperature matters when you’re doing the installation. It was around 55F when I started in the evening, and when it dipped down into the 40s the sheets would not stick to the metal, and were hard to compress with the roller. That’s why I ended up only doing the floors and not any vertical surfaces; i will have to wait for a nice hot day. The other thing is that the foil layer on top is razor sharp at the edges, definitely wear gloves! I didn’t notice until after but I have little papercuts all over my fingers. Aside from those things, the install was easy and straightforward. The sheets cut easily with scissors, and any goo that ends up on your hands or scissors can be cleaned up with acetone (nail polish remover), or lacquer thinner. I would use this stuff again.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on November 16, 2023
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    Verified Purchase
    Lyrah
    Charlottesville, US
    ★★★★★ 5
    Very efficient!
    Model: NewSLS50_52
    Amazing the difference it makes on dumping the noise. Very easy to install. Pell and stick literally! Great!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on November 23, 2025
    B
    Verified Purchase
    Beth
    Phoenix, US
    ★★★★★ 5
    Great option for a great price
    Size: 7.5, Color: Black
    I love these sandals. They are well made, true to size and soft suede. They are lightweight and feel just like my UGG goldenstar sandals. (These are not as adjustable, so if you have narrow or wide feet, these may not be for you) These a great value for the money, especially for medium width feet. The strap across the toe is not adjustable, but fit my feet just fine. The ankle strap was a good length for me. And the Velcro is strong. These sandals are a great value for the money. I will probably start looking into kookaburra before I rush to buy the more expensive ones now.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 5, 2026
    N
    Verified Purchase
    Never received!! Very disappointed!!
    Natrona Heights, US
    ★★★★★ 5
    Quality, good looking shoes!
    Size: 8.5, Color: Green
    Absolutely perfect fit, design, and color. I'm so pleased with these sandals and as always with this brand, I am not in anyway disappointed. These shoes are so comfortable right out of the box. They clean up very nicely, and last forever. I am so glad I got these before they were sold out.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on April 30, 2026
    M
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    Marla
    Battle Creek, US
    ★★★★★ 5
    UGG Comfort Without the Premium Price
    Size: 9, Color: Beige, Size: 9, Color: Beige
    These sandals are super cute and incredibly comfortable. They have that classic UGG look and feel, but at a much more approachable price point. The footbed is cushioned and supportive, making them easy to wear for extended periods. The straps feel secure without rubbing, and the overall construction feels solid and well made. They’re lightweight but still have a sturdy sole with good traction. They pair effortlessly with casual outfits and have that relaxed, elevated vibe UGG is known for—just without the higher price tag. A great value for both style and comfort.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 20, 2026

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