QA1 MOD Series Rear Pro Coilover Kit, 150 lbs/in Rate - 1964-1969 Buick Special RZR PRO XP 4 For those looking to enhance

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QA1 MOD Series Rear Pro Coilover Kit, 150 lbs/in Rate - 1964-1969 Buick Special RZR PRO XP 4 For those looking to enhancedon't be limited to adjustments! Completely re valve in minutes with the MOD Series Shock. Designed specifically on your 1964 1969 Buick Special 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