Balance the handling of your classic Mustang with QA1’s 0.875” (7/8”) tubular rear sway bar, engineered for 1964–1970 models. Purpose built for QA1 rear coilover conversions and designed to match the performance of QA1’s front sway bars and suspension systems, this rear bar reduces body roll, improves traction, and helps your Mustang corner with confidence. A bolt on upgrade to the QA1 4 link kit for unlocking even more potential. BALANCED HANDLING & STABILITY Adding a rear sway bar is one of the most effective ways to improve cornering performance on a classic Mustang. QA1’s tubular 0.875” sway bar increases roll stiffness at the rear axle, reducing understeer and keeping your car more level in the turns. The result is sharper handling, more predictable grip, and a Mustang that feels planted and controlled. BOLT-ON INSTALLATION This kit is designed for straightforward installation, bolting directly to the QA1 4 link crossmember with no cutting or welding required. It includes polyurethane bushings and heavy-duty mounting hardware for a complete, ready-to-install solution.