BMW 4 Series F32, F33, F36, F82, F83 (2013 - 2020) Rear Anti-Roll Bar Bush 22.9mm 22.9mm - PFR5-4013-22.9BLK Fits F8x M3 and M4 models not equipped with the Competition package - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!