Audi A4 / S4 / RS4 A4 / S4 B9 (2016 - ON) Front Lower Radius Arm to Chassis Bush 75mm - PFF3-702BLK This part suits arms with a 75mm diameter bush. For arms with 65mm bushes, please use PFF3-802BLK. This is a replacement part that in our Black Series application is over 100% stiffer than the original rubber bush to withstand increased loading seen by this position on the car. For a caster adjustable option, please use PFF3-702GBLK. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!