Solo Werks S1AU001 - S1 Coilover Suspension System - Audi A4 (B6/B7) '01-'08 Sedan 2wd & Quattro Gold Zinc Plated Housings for superb corrosion resistance Black Anodized spring perches - double lock ring design 3 year Limited Warranty Lowering Range: Front 1.4"-2.4" / 35-60mm / Rear 1.4"-2.6" / 35-65mm S1 Coilover - Audi A4 (B6/B7) '01-'08 Sedan 2wd & Quattro