Powerflex Polyurethane Bush kit for Audi A4 / S4 / RS4 (B5) 1995 - 2001 Rear Anti Roll Bar Bush 15mm - PFR3-210-15 - - Bush Size: 15mm - PRICE IS PER CAR KIT, NOT per bush. Powerflex usually price their bushes singly, but we have combined the QTY and price to keep it simple for you!