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IRS Differential Insert Kit; Urethane (15-25 Mustang)Find parts that fit my vehicle

Item 459008
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$79.99 kit

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      Product Information

      Features, Description, Q&A, Specs & Installation

      Features

      • UPR Products IRS Differential Insert Kit
      • Matte Red, Matte Black, and Raw Metal Finish
      • Crafted from Softer 80 Durometer Urethane (Red) and Harder 88 Durometer (Black) Material
      • Reduced Wheel Hop
      • Improved Handling and Performance
      • Includes Grade 10.9 Hardware
      • Direct Replacement
      • Comes in Kits
      • Fits 2015-2025 Ford Mustang Models

      Description

      IRS Stability and Performance Enhancement. The UPR Products IRS Differential Insert Kit is engineered to dramatically reduce wheel hop and increase rear-end stability for 2015-2025 Ford Mustang models. Designed for aggressive street driving and track use, this insert kit improves handling response and differential rigidity without introducing excessive noise or harshness.

      Construction and Appearance. Finished in matte red, matte black, and raw metal, the kit features bushing inserts made from two durometers of urethane—80 durometer (red) for mild damping and 88 durometer (black) for firm support. These inserts are paired with billet aluminum spacers and premium steel washers for maximum strength and longevity. All hardware is Grade 10.9, ensuring durability and a secure fit under load.

      Installation. Designed as a direct replacement, the kit installs without the need to remove the differential. It bolts into the existing mounts using the provided hardware, spacers, and washers. Moderate mechanical experience is recommended, and professional installation is ideal for ensuring proper torque and alignment.

      Application. The UPR Products IRS Differential Insert Kit fits 2015-2025 Ford Mustang models. It enhances your vehicle by tightening rear suspension behavior, reducing unwanted movement, and delivering sharper acceleration and cornering characteristics—perfect for street performance or competition driving.

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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (4) Soft Urethane Bushing Insert
      • (4) Hard Urethane Bushing Insert
      • (2) 14mm x 100mm Bolt
      • (2) 14mm x 65mm Bolt
      • (2) 14mm x 35mm Bolt
      • (2) 14mm Large Washer
      • (4) 14mm Lock Washer
      • (4) Billet Spacer Insert
      • (4) Large Steel Washer

      Questions & Answers

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