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The QA1 GM Pro Front MOD Series coil‑over system features a MOD double‑adjustable shock and a 10" large tapered flat spring rated 550 lbs/in to handle aggressive front‑end setups. QuickTune modular valve packs let you revalve quickly while the shock stays on the car, and remote or piggyback canister options plus 4‑way high/low speed bleed let you tailor 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 550lbs/in - Flat Large - Aluminum
