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The QA1 GM Pro Front MOD Series coil‑over system combines a MOD double‑adjustable shock with a 10" large tapered flat spring rated 650 lbs/in for substantial front‑end tuning range. QuickTune dry modular valve packs permit revalving while the shock stays on the car, and remote or piggyback canister mounting plus 4‑way high/low speed bleed let you refine compression and rebound. Compressed height 8.63", extended 12.63"; dyno tested and serialized.
QA1 GM Pro Front Coil-Over System - MOD Series - 10in x 650lbs/in - Flat Large - Aluminum
