The O.E.M. design uses two spherical bearings to carry the thrust load of the entire front end. Over time, bearings begin to wear and the external seals become ineffective due to excess play, which allows water and debris to enter the assembly. Contains all the parts needed to upgrade all four A-arms. Includes 12 machined Acetal shoulder bushings and hardened steel pins to carry the load, greatly extending the life of the A-arm assembly. Note: Image is for display only; actual item will vary based on fitment.