Product Summary

Front Lower Position, Tubular Control Arm Style, Steel

    Key Specs

    MFG. Part #2307-R
    BrandUMI Performance
    PositionFront Lower
    Control Arm StyleTubular

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    UMI Performance 2307-R Details

    UMI’s fabricated tubular a-arms provide a rock solid foundation for your 4th Gen’s front suspension. Our P/N 2307 a-arms are built to offer smooth travel, a precise steering feel, and an 8lb weight savings over stock. The DOM 1-1/4” diameter tubular sections are precision bent, CNC notched and TIG welded to the ball joint cup featuring our double strength configuration. UMI built 4130 Chromoly tube adapters provide a durable attachment point for the high misalignment rod-end while the other side features an ultra smooth, bind free Delrin bushing. The combination of Delrin and rod end make for a performance oriented a-arm with street tendencies. The spring and shock attach to the arm via a tough 1/4” thick steel shock mount. The CNC machined ball joint cup is attached and a premium ball joint is installed. UMI’s tubular lower a-arms can be installed on the factory k-member or any aftermarket k-member as well as the factory spindle-making this a true bolt-on product. Manufactured with pride in Philipsburg, PA – USA.

    Hardware kit P/N 2301-A-arm hardware kit includes Grade 10.9 bolts, washers and locking nuts.


    • 1-1/4” USA mild steel DOM tubing

    • TIG Welded 4130 Chromoly threaded tube adapters for thread durability

    • CNC machined lower ball joint cup

    • Heavy duty CNC laser cut ¼” thick shock mount

    • Premium lower ball joints installed

    • Race quality high misalignment rod end on vertical joint

    • Greaseable Delrin bushings for precise handling (for ultimate street comfort use P/N 2305)

    • Quality shock mounting hardware included

    • Uses balance of OEM hardware or use UMI hardware kit P/N 2301

    • Durable red or black powder coat

    • Made in Philipsburg, PA – USA


    UMI Performance 2307-R Specifications

    MFG. Part #2307-R
    BrandUMI Performance
    PositionFront Lower
    Control Arm StyleTubular
    Speedway Motors Catalog Part #185-2307R
    Material TypeSteel
    Cross Pin MaterialSteel
    Bushing MaterialSpherical Bearing/Delrin
    Ball Joint IncludedYes
    Ball Joint TypePress-in
    Bushing IncludedYes
    Hardware IncludedNo
    FinishPowder Coated
    Sold in QuantitySet