Bilstein B12 2005 Audi A4 Base Front and Rear Suspension Kit Oishii Bilstein B12 2003 Audi A4 Quattro Base Front and Rear Complete Bilstein B12 1997 Audi A4 Quattro Base Front and Rear Complete Bilstein B12 2010 Audi A5 Quattro Base Front and Rear Complete. The Bilstein B12 (Pro Kit) is the result of two companies atop their industries collaborating to present the ultimate solution in suspension for the passenger car market. The shock absorber experts at Bilstein and the spring professionals at Eibach used their 120 years of combined experience and knowledge to spawn Performance2. The B12 system consists of four high performance Bilstein dampers, four hi tech industrial Eibach lowering springs and together you have the best handling, most comfortable direct fit suspension system available today. This Part Fits: Year Make Model Submodel 2009 2014 Audi A4 Base 2015 2016 Audi A4 Premium 2015 2016 Audi A4 Premium Plus 2015 Audi A4 Prestige 2009 Audi A4 Quattro Avant 2009 2014 Audi A4 Quattro Base 2015 2016 Audi A4 Quattro Premium 2015 2016 Audi A4 Quattro Premium Plus 2015 Audi A4 Quattro Prestige