BMW 1 Series F20, F21 xDrive (2011 - 2019) Rear Subframe Front Mounting Bush Anti-Squat (Fast Road) - PFR5-1220 PFR5-1220 is a full replacement bush for non-M models to raise the front of the rear subframe by 9mm, providing the same anti-squat characteristic during acceleration as featured on M model vehicles and is made using our Purple 80A durometer material, recommended for heavily tuned road or occasional track cars. For standard subframe alignment, without anti-squat, please use PFR5-420. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!