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The QA1 Big Wheel Rear Pro Coil Kit for 1971–1976 GM B-Body equips MOD Series shocks with 300 lb springs to favor heavier loads or firmer handling. It offers adjustable rebound and compression valving plus ride height range from 1/2" higher than stock down to 2.25" lower, letting builders dial stance and control. Sold as a pair, this kit is proudly made in the USA and backed by QA1 support.
QA1 71-76 GM B-Body Rear Pro-Coil MOD 12-300 Kit
