Powerflex Polyurethane Bush kit for BMW Mini Generation 3 (F56) Rear Anti Roll Bar Bush 21.4mm - PFR5-1314-21.4 - This part replaces OE number 33506859891 that includes the original rubber bush. - Bush Size: 21.4mm - 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!