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The QA1 MOD Series GM front coilover is a double‑adjustable front system for GM applications built to allow complete revalving in minutes using QuickTune dry modular valve packs without interrupting the oil path. It includes an 11" large tapered flat spring rated 300 lbs/in and provides 4‑way high and low speed bleed adjustment. Compressed height is 10.13" with a 15" extended length; remote canister mounting is supported and the units are dyno tested and serialized in the USA.
QA1 GM Pro Front Coil-Over System - MOD Series - 11in x 300lbs/in - Flat Large - Aluminum
