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The QA1 GM Pro Front MOD Series coil‑over system ships with a MOD double‑adjustable shock and a 10" tapered pigtail spring rated 550 lbs/in for controlled front damping. QuickTune modular valve packs let you change valving without opening the shock, while remote or piggyback canister options and 4‑way bleed adjustments provide installation and tuning flexibility. Compressed height 8.63" and extended 12.63"; each unit is dyno tested and serialized.
QA1 GM Pro Front Coil-Over System - MOD Series - 10in x 550lbs/in - Pigtail - Aluminum
