Porsche 928 (1978-1995) Rear Lower Control Arm Inner Bush - PFR57-716 PFR57-716 Rear Lower Control Arm Inner Bush is made using our Grey 80A material to revitalise suspension performance, ride and handling. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!