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The QA1 GM Pro Front MOD Series coil‑over system combines a MOD double‑adjustable shock with an 11" large tapered flat spring rated 250 lbs/in to deliver controlled front damping. QuickTune dry modular valve packs permit revalving on the car without exposing the oil path, while remote or piggyback canister mounting and 4‑way high/low speed bleed provide precise adjustment. Compressed height 8.63", extended 12.63"; dyno tested and serialized.
QA1 GM Pro Front Coil-Over System - MOD Series - 11in x 250lbs/in - Flat Large - Aluminum
