CURT Replacement TruTrack 4P Weight Distribution Hitch Hardware Kit Model 17550CURT Replacement TruTrack 4P Weight Distribution Hitch Hardware Kit Model 17550 While many weight distribution hitches are made to be compatible with a sway control attachment, the CURT TruTrack is an advanced WD system that integrates the sway control function into the design of the hitch. It combines precise weight distributing with integrated sway control to deliver the smoothest, safest ride possible. This replacement hardware kit for the TruTrack