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The QA1 Pro Coil front coil‑over system for 1958–1970 Impalas and other full‑size GM vehicles provides single‑adjustable damping plus ride‑height tuning for classic full‑size applications. This kit includes a 9" spring rated 450 lb/in and a fully threaded body for ride‑height adjustment. Lightweight high‑travel springs reduce unsprung weight, and the system is bolt‑in, serviceable, dyno‑tested, and made in the USA.
QA1 GM Pro Front Coil-Over System - Single Adj. - 9in x 450lbs/in - Pigtail Large - Aluminum
