The GForce Engineering fully-fabricated 9” IRS for the 2015-2016 S550 Mustang is a complete bolt-in independent rear suspension that replaces your drive-line from the transmission back. Includes a fabricated 9” housing that bolts to the stock differential mounting points. Learn More
We used custom hubs to stop the spline breakage but still the wheel bearing was an issue. Well say goodbye to both issues, as the new Mustang has a full 32 spline going into the hub and a beefy 34 spline into the diff, up from the 31 spline of yesteryear. Learn More
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