QA1 MOD Series Rear Pro Coilover Kit, 170 lbs/in Rate - 1978-1980 Pontiac Grand Am GLA250 2017 Buick Regal GS

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QA1 MOD Series Rear Pro Coilover Kit, 170 lbs/in Rate - 1978-1980 Pontiac Grand Am GLA250 2017 Buick Regal GSdon't be limited to adjustments! Completely re valve in minutes with the MOD Series Shock. Designed specifically on your 1978 1980 Pontiac Grand Am 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