QA1 MOD Series Front Coilover Kit - Double Adjustable, Tapered Flat Spring, 500 lbs/in Rate - 1968-1971 Oldsmobile 442 Silvia 2012 Porsche 911 Convertible (w/

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QA1 MOD Series Front Coilover Kit - Double Adjustable, Tapered Flat Spring, 500 lbs/in Rate - 1968-1971 Oldsmobile 442 Silvia 2012 Porsche 911 Convertible (w/don't be limited to adjustments! Completely re valve in minutes with the MOD Series Shock. Designed specifically on your 1968 1971 Oldsmobile 442 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