BMW X Series X6 Series Front Radius Arm Bush - PFF5-3401 PFF5-3401 Front Radius Arm Bush is made in our Black 95A polyurethane and paired with stainless-steel inner sleeves and CNC-machined outer shells for strength and improved load distribution to revive the feel and handling. Each bush has a knurled bore for grease retention and a low-resistance operation, resulting in better braking stability, more precise steering and improved tyre longevity. Stiffness over the OE bush has increased by 25%. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!