Bilstein B8 control arms offer a direct-fit upgrade for factory upper control arms on trucks and SUVs. The kits contain a pair of control arms that correct the caster alignment for better straight-line stability with lifted suspensions, and the improved pivot angles increase wheel travel and reduce stress on the joints. These rugged arms with a durable finish feature a tubular design which allows for more spring and shock clearance, plus greasable polyurethane bushings and heavy-duty ball joints for the ideal combination of ride quality and durability with minimal maintenance. Compatible with all their shocks and coilover kits, Bilstein B8 control arms come with detailed instructions and the necessary hardware for easy installation (all components are replaceable.