BBK 86-04 Mustang BBK Rear Lower Control Arm Replacement Bushing KitAll BBK Performance parts are backed by a 1 YEAR manufacturers warranty from the original date of purchase. An optional extended warranty is also available giving you an additional 2 or 3 years from original date of purchase. Costs for the extended warranty option can be viewed when the item is added to your cart. The manufacturers warranty is based on normal use and installation of each product. Durable Polyurethane Direct replacements for BBK