The SuspensionMAXX SSmodule Knuckle Bushing Kit reduces the repair expense of your independent rear suspensions by allowing replacement of just the worn out rear upper knuckle bushings, rather than complete and expensive A-arm assemblies. Reduces noise and instability to provide a smoother safer ride. Corrects wheel alignment issues to reduce tire wear. SSmodule allows repairs to be made on the vehicle - without A- arm removal. Kit includes aero-space quality components, chrome plated ball, and urethane debris seals. Installation takes approximately 1.5 hours using the SuspensionMAXX SS Mod Installation and Removal Tool, and is supported by the SuspensionMAXX Technical Support Program. Proudly made in the USA and covered under the MAXX Structural Lifetime Warranty.