QA1 Front Pro Coilover Kit - Double Adjustable, Large Tapered Flat End, 350 lbs/in Rate - 1973-1988 Buick Regal C2500 Suburban Ride height is fully adjustable

Ride height is fully adjustable independent of spring preload

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H&R ETS Electronic Lowering System modules for your 2005-2013 Mercedes-Benz S600 4MATIC AWD (W221) are plug-and-play

QA1 Front Pro Coilover Kit - Double Adjustable, Large Tapered Flat End, 350 lbs/in Rate - 1973-1988 Buick Regal C2500 Suburban Ride height is fully adjustableThese QA1 GM Pro Coil Systems for the 1973 1988 Buick Regal are a great option for anyone looking for fully adjustable ride height and valving control. Choose a spring rate and adjustability that fits your driving style, adjust the valving to match and you are on your way. These shocks also utilize a fully threaded body that allows you to adjust your ride height for the perfect stance or to finely tune the weight balance for superior handling.