QA1 64-66 Ford Mustang Rear Suspension Conversion System - 9in Housing Single Adj. 130lb/in

If you're looking to seriously upgrade the handling and traction on your 1964-1966 Ford Mustang, this complete rear suspension conversion system from QA1 is a game-changer. It replaces the factory leaf spring setup with a modern, triangulated 4-link system and a custom-built QA1 9-inch rear housing. This isn't just about looks; it's about fundamentally changing how your classic Mustang drives, offering improved cornering, better stability, and the strength to handle more powerful engines.

The heart of this system is QA1's single adjustable coilovers, which let you dial in both rebound and compression with a single knob, giving you 18 different settings. This means you can easily tune the ride for everything from comfortable street cruising to aggressive track use, all while eliminating common issues like axle wrap and wheel hop. The included 9-inch rear housing is built tough, featuring a fabricated steel center section, heavy-duty 3-inch axle tubes, and is rated to handle up to 800 horsepower, ensuring it can keep up with serious performance builds. You also get the flexibility to adjust your ride height from stock down to 3 inches lower, letting you achieve that perfect stance.

QA1 has made this kit as straightforward to install as possible, including self-fixturing brackets that help ensure perfect alignment during welding. Everything you need is in the box, from the housing and 4-link components to the shocks and all necessary hardware, including 5x4.5" bolt pattern wheels and 31-spline alloy axles for strength. This system is designed to give your classic Mustang a modern feel and performance capability.