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The QA1 GM Pro Front MOD Series coil‑over system includes a MOD shock with double adjustment and a 10" large tapered flat spring rated 500 lbs/in to suit demanding setups. QuickTune dry modular valve packs permit revalving without exposing internal components, and the shock supports remote or piggyback canisters plus 4‑way bleed adjustments for fine control. Compressed height 8.63", extended height 12.63"; dyno tested and serialized in the USA.
QA1 GM Pro Front Coil-Over System - MOD Series - 10in x 500lbs/in - Flat Large - Aluminum
