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Ford Racing Traction-LOK Limited Slip IRS Differential; 34-Spline 8.8-Inch (15-26 Mustang, Excluding GT350 & GT500)

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    Product Information

    Features, Description, Reviews, Q&A, Specs & Installation

    Features & Specs

    • Fits 2015-2026 Mustang GT, V6, and I4 with 3.31, 3.55, 3.73, and 4.09 gear ratios only
    • Traction-Lok Super 8.8-Inch Differential
    • Fits 34-Spline Axles
    • Requires 4 ounces of CM-19546-A1 friction modifier with initial fill
    • For use with specified Super 8.8 gear sets
    • Use differential install kit for proper setup and secure mounting
    • Fits 2015-2026 Mustang, excluding GT350 and GT500 models

    Description

    Precision Limited Slip. The Ford Performance Traction-LOK Limited Slip IRS Differential; 34-Spline 8.8-Inch enhances traction by distributing power evenly to both rear wheels during acceleration. This differential significantly improves handling and stability across a variety of driving conditions, including high-performance and everyday use scenarios. It replaces the factory differential to provide superior grip and performance for enthusiasts seeking enhanced rear axle control.

    Construction and Appearance. Constructed with high-quality forged and machined components, this differential is designed for durability and reliable operation. It is built to exact specifications to ensure seamless fitment and optimal function within the IRS setup. The unit features a natural metallic finish with visible precision machining marks, reflective of its robust build quality.

    Installation. Installation requires mechanical knowledge of differential assembly. Although no drilling is necessary, it is recommended to use the specified install kit to ensure proper installation and secure mounting.

    Warranty. This differential includes a manufacturer’s warranty covering defects in materials and workmanship.

    Application. Specifically designed for 2015-2026 Mustang models, excluding GT350 and GT500 variants, to ensure compatibility with selected gear ratios and axle specifications.

    Ford Racing M-4204-M

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    Install Details & What's in the Box

    Installation Info

    Installation Time

    (approx) 4 Hours

    Difficulty Level:

    Mechanical expertise or professional installation required.

    Installation Guides

      No guide available for this part yet.

    What's in the Box

    • (1) IRS Limited Slip Differential

    4.9

    Customer Reviews (120)

    Questions & Answers (17)

    Will It Fit My Mustang

    • Bullitt - 19, 20
    • Dark Horse - 24, 25, 26
    • Dark Horse Premium - 24
    • EcoBoost - 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26
    • EcoBoost Premium - 26
    • GT - 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26
    • GT Premium - 26
    • Mach 1 - 21, 22, 23
    • V6 - 15, 16, 17