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The QA1 MOD Series GM front coilover is a double‑adjustable front system for GM applications combining an aluminum shock with QuickTune dry modular valve packs so revalving can be done without opening the shock. It includes a 10" large tapered flat spring rated 400 lbs/in and provides 4‑way high and low speed bleed tuning. Compressed height is 9.63" with a 14.5" extended length, and the kit supports remote canister mounting; dyno tested and serialized in the USA.
QA1 GM Pro Front Coil-Over System - MOD Series - 10in x 400lbs/in - Flat Large - Aluminum
