Porsche 928 (1978-1995) Rear Lower Control Arm Outer Bush - PFR57-717H PFR57-717H Rear Lower Control Arm Outer Bush is made using our Grey 95A 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!