KW 253100BJ Coilover Spring Kit AUDI A4 (B9); (B8, B81) kW 110-200 FA 15-40 RA 20-45Description KW 253100BJ Coilover Spring Kit AUDI A4 (B9) (B8, B81) kW 110 200 FA 15 40 RA 20 45 The KW height adjustable spring kit allows for vehicle lowering in combination with the standard dampers. Unlike conventional spring kits, it provides customized height adjustment within the tested adjustment range. Vehicle specific spring seats, adapted KW lowering springs, matching elastomers, and dust protection systems are used for this solution. The