BMW 2 Series F22, F23 xDrive (2013 - 2021) Rear Subframe Rear Mounting Bush (Fast Road) - PFR5-422P PFR5-422P is a full replacement bush and is made using our Purple 80A durometer material, recommended for more heavily tuned road or occasional track cars. For inserts that fit into the OE bush use PFR5-421 for 33316758260 or PFR5-1921 for 33316792510. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!