Vauxhall / Opel Calibra 2wd (1989 - 1997) Rear Trailing Arm Bush - PFR80-440BLK If you do not require geometry adjustment of the rear trailing arms, then you would need to purchase 4 x PFR80-440's. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!