source: H&R  The Audi A4 and S4 have always been innovative and stylish vehicles – making them a huge hit with enthusiasts. To enhance the characteristics of these vehicles, H&R ride development engineers designed an all-new Sport Spring kit. H&R Sport Springs (part #: 50357) improve handling and provide superb ride quality to the A4/S4. Lowering on sport suspension models is approx. 0.80” front and rear, and on non-sport suspension models, approx. 1.6” front and...