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The QA1 GM Pro Front MOD Series coil‑over system combines a MOD Series double‑adjustable shock with a 10" tapered flat spring rated 550 lbs/in for refined front suspension performance. QuickTune dry modular valve packs allow on‑car revalving without interrupting the oil path, and remote or piggyback canister mounting plus 4‑way bleed adjustments give broad tuning range. Compressed height 8.63", extended 12.63"; made in the USA and dyno tested.
QA1 GM Pro Front Coil-Over System - MOD Series - 10in x 550lbs/in - Flat - Aluminum
