BMW 5 Series (E39) 523i 2.5 panel filter Panel Filter:Panel Filter Focus ST250 EcoBoost GGR AP

Focus ST250 EcoBoost GGR AP Racing BIG Brake Kit BBK 362mm 6pot Red Calipers GGF4007

AutoSpecialists Focus ST Carbon Fibre look Gen2 CAIS 'Cold Air Induction System' Gain 10 - 18 bhp depending on spec of your ST

MSRN108 - Hi-flow Sports Catalyst Assembly - £282

To achieve this you would soften the rear dampers to allow faster compression

By vastly reducing stiction between the spring and its seats the BC Racing units avoid the above problems thus improving the efficiency of the steering system and allowing the spring and damper to work as designed

BMW 5 Series (E39) 523i 2.5 panel filter Panel Filter:Panel Filter Focus ST250 EcoBoost GGR APPanel type Rect. Panel Dimensions 273mmX133mm