BMW X Series X6 Series Rear Lower Arm Rear Bush 16mm Bore Sleeve - PFR5-711-16 With no replacement bushes available from BMW and new genuine cast aluminium arms retailing for a few hundred pounds each, these new bushes offer a high-performing, durable and cost-effective solution, backed by our industry-leading Lifetime Warranty. - NOTE: Price is for CAR KIT, NOT per bush… Powerflex price their bushes individually, but we have combined the quantities to make it simple!