H&R'street Performance SS Coil Overs feature polished stainless steel shock tubes. These Coil Overs are shock damping adjustable-allowing personalized tuning of the shock setting to suit driving needs for high performance or comfort. The fully threaded shock body allows for adjustable vehicle height. H&R ride development engineers have precisely plotted the perfect shock damping curves of each application for optimized handling and superb ride comfort. To ensure the best quality available H&R has partnered with world-renowned shock specialists, KONI, to manufacture these high quality shocks.