Ford Focus Models Focus Mk1 inc ST and RS (up to 2006) Front Wishbone Lower Rear Bush - PFF19-802BLK This bush is for the ST170 models & non-RS models which are 57.1mm in diameter. For RS models use PFF19-803 which is 62mm in diameter. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!