Product Summary

Buick, Chevy, Oldsmobile, Pontiac, Front Position

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    Key Specs

    MFG. Part #4049F
    PositionFront
    Spring Rate530 lbs.
    Outside Diameter5.25"
    Inside Diameter3.62"
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    Need To Know

    Quick and Easy Returns

    Return Policy

    UMI Performance 4049F Details

    A spring is a spring right? Wrong! When UMI chose to manufacture our own line of springs we went all out. Designed in conjunction with a leading Sprint Cup chassis engineer, these springs are the best in the business. UMI’s springs are designed to add modern handling and a crisp ride while maintaining the factory muscle car appearance. Our front springs are wound from 5160 CrSi premium wire and feature a linear 530 lb/in rate. The linear rate provides consistent handling characteristics which are important for Auto-x and Pro-Tour applications while the increase in stiffness reduces body roll and prevents the “floating” feeling so common with the A-body. These springs are suitable for Auto-x and Pro-Tour applications as well as corner carving and general cruising. The ride height is engineered to be level with standard SBC, Pontiac 400 and aluminum head/intake Big Block Chevy as well as LS power (lightened cars may require spring trimming). The front springs are also suitable for full weight Big Block applications when ¼” nose down rake is desired. They have a tough, black powder coat finish and UMI proudly manufactures these premium quality springs in the USA.

    Designed to maintain the factory muscle car appearance with today’s modern feel.

    Consistent rates and only the best materials (premium Chrome Silicon wire) ensure your cars sits properly for years to come.

    Linear spring rate provides a firm yet comfortable ride and incredible handling.

    No more floating feeling.

    Suitable for Pro-Tour, Auto-x and general cruising.

    Manufactured in the USA.

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    UMI Performance 4049F Specifications

    KEY SPECS
    MFG. Part #4049F
    BrandUMI Performance
    PositionFront
    Spring Rate530 lbs.
    Outside Diameter5.25"
    Inside Diameter3.62"
    Material TypeSteel
    FinishPowder Coated
    ColorBlack
    Hardware IncludedNo
    Spring Rate Range500 - 599 lbs.
    GENERAL
    Sold in QuantitySet
    Front Suspension HeightFactory Height
    Rear Suspension HeightFactory Height
    Progressive Rate SpringNo
    Overall Length15"
    Bushing IncludedNo

    Ratings & Reviews

    5

    3 Reviews

    Overall Assessment

    Customers praised the product for its practicality, ability to effectively increase ride height, and prevent bottoming out. Many users specifically appreciated the adjustable spring rate feature and strength, indicating superior material quality. They found it particularly helpful for heavier vehicles, clearly outperforming other brands. The product not only met but exceeded customer expectations for its superior performance.

    5

    3 reviews

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    Filter by Ratings

    Good Heavy Built Springs

    5.0

    a year ago

    Chino

    SC

    Verified

    I replaced the rear springs last year, decided to do the front too.

    Would Recommend

    Proper springs worked

    5.0

    3 years ago

    Monte Man

    Edmonton

    Verified

    Worked as expected. Increased ride height and car is not bottoming out anymore.

    Would Recommend

    Just what i needed

    5.0

    3 years ago

    Vman1911

    Jamestown ca

    Verified

    I swapped the small block in my 70 chevelle to a 454 and the "heavy duty springs i purchased from a diff seller were too weak to handle the weight. I liked being able to choose my spring rate and if the every required to compress them for install is any indication these will put her back to a proper ride height as well as keep it from bottoming out on the rough stuff

    Would Recommend

    Showing 3 of 3 reviews

    Questions & Answers

    1 Question1 Answer

    Will these fit a 65 olds 442

    by Jerry

    3 years ago

    1 answer

    1 of 1 questions shown

    Fitment

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