QA1 Rear Pro Coilover Kit - Single Adjustable, 220 lbs/in Rate - 1978-1987 Pontiac Bonneville Mercedes-Benz AMG 2009 Audi S3 Premium Plus

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QA1 Rear Pro Coilover Kit - Single Adjustable, 220 lbs/in Rate - 1978-1987 Pontiac Bonneville Mercedes-Benz AMG 2009 Audi S3 Premium PlusQA1 offers bolt in Rear Coil Over Conversion Kits for the 1978 1987 Pontiac Bonneville. These kits include specially designed USA made mounting brackets and single or double adjustable Aluminum Shocks, springs and all necessary hardware. Single Adjustable Shocks provide 18 positions of simultaneous rebound and compression adjustment while QA1's double Adjustable Shocks provide 18 positions of compression adjustment and 18 positions of rebound