Ford Focus Models Focus Mk3 inc ST and RS (2011-2018) Rear Anti Roll Bar To Chassis Bush 20mm 20mm - PFR19-1204-20BLK Fits Focus MK3 RS only. Please check anti roll bar diameter before ordering. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!