This Associated factory replacement rear axle gear differential is designed for the RC28R platform. The assembly includes a metal axle shaft with threaded ends, two hex nuts, and an e-clip, providing all the hardware needed for a complete differential replacement. It is a direct-fit part for restoring drivetrain function to your RC28R. Features: Includes axle shaft, two hex nuts, and e-clip Metal axle shaft construction Threaded ends for secure hardware retention Direct replacement for RC28R rear differential 7/7/26 cs