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Product Summary

Universal Fit

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    Key Specs

    MFG. Part #1921
    BrandDemon Carburetion
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    Need To Know

    Quick and Easy Returns

    Return Policy

    Demon Carburetion 1921 Details

    625 Street Demon® calibration kits feature an assortment of metering rods, jets and step-up springs to fine tune to your application.

    • Primary main jet assorment of .074, .076, .080 and .082
    • Secondary main jet assortment of .078 and .082
    • Metring rod assortment of .056/.048, .058/.050, .058/.052, .060/.050, .062/.054 and .064/.056
    • Step-Up spring assortment of orange, blue, yellow and silver springs
    • Hard yellow storage case

    Rebates

    Holley RPM Labor Day Sale 2025

    Receive a 10% instant discount on select products from the Holley family of brands between August 18, 2025 and September 14, 2025 during Holley's RPM Labor Day Sale Event.

    Demon Carburetion 1921 Specifications

    KEY SPECS
    MFG. Part #1921
    BrandDemon Carburetion
    GENERAL
    GTIN Code792898400153

    Ratings & Reviews

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    I would buy this product again

    5.0

    3 years ago

    Jimmy B

    El Paso. Tx

    Verified

    53 Chevy PU

    Would Not Recommend

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