BMW 3 Series F30, F31, F34, F80 (2011 - 2018) Rear Anti-Roll Bar Bush 22.9mm 22.9mm - PFR5-4013-22.9 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!