Powerflex Polyurethane Bush kit for Subaru Forester (SH 05/08 on) Rear Anti Roll Bar Bush 20mm - PFR69-512-20BLK - Please measure the diameter of the anti roll bar and order the correct size. - Bush Size: 20mm - 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!