Audi A4 / S4 / RS4 A4 / S4 / RS4 B8 (2008-2016) Rear Lower Arm Rear Bush - PFR3-712 PFR3-712 is a reinforced replacement bush to revitalise bush performance and provide stability to the rear suspension. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!