Audi A4 / S4 / RS4 A4 / S4 B9 (2016 - ON) Front Lower Control Arm Inner Bush - PFF3-701BLK PFF3-701BLK is a reinforced replacement bush that is 18% stiffer than the original bush to revitalise bush performance and restore steering precision. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!