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The QA1 GM Pro Front MOD Series coil‑over system includes a MOD double‑adjustable shock matched to a 10" large tapered flat spring rated 600 lbs/in for versatile front tuning. QuickTune dry modular valve packs let you swap valving without opening the shock, while remote or piggyback canister mounting and 4‑way high/low speed bleed give precise control over compression and rebound. Compressed height 8.63" and extended 12.63"; dyno tested and serialized.
QA1 GM Pro Front Coil-Over System - MOD Series - 10in x 600lbs/in - Flat Large - Aluminum
