Powerflex Black Series Car: Audi - RS3 MK2 8P (2011-2013) description: Rear Lower Spring Mount Outer purchased parts package: 2 installation location: rear notice: This bush is suitable for Road and Black Series applications. It is the same part as the Road Series but with Black Series packaging. Fits into 1K0505311AB wishbone. Diagram reference: 9 Part no.: PFR85-509BLK