QA1 MOD Series Front Coilover Kit - Double Adjustable, Tapered Flat Spring, 300 lbs/in Rate - 1971-1972 GMC Sprint 912 This series of Adjustable Trailing

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QA1 MOD Series Front Coilover Kit - Double Adjustable, Tapered Flat Spring, 300 lbs/in Rate - 1971-1972 GMC Sprint 912 This series of Adjustable Trailingdon't be limited to adjustments! Completely re valve in minutes with the MOD Series Shock. Designed specifically on your 1971 1972 GMC Sprint to meet the demands required by today's high performance drag race and handling pro touring cars, QA1's multi patent pending MOD Series shock will transform the way racers respond to changing track conditions and configurations. The key element to this tunability is QuickTune Technology: dry modular valve packs