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 active sway control to deliver the smoothest, safest ride possible. The TruTrack 4P features a unique spring and cam system within the hitch head that builds up pressure to actively stop sway and then relaxes to make smooth turns. The hardened cam components are less subject to wear and last longer than competitor models. The TruTrack also features unique spring bars. Like all WD hitches, it uses a pair of spring bars to leverage the trailer tongue weight and spread it across all axles of the vehicle-trailer combination. However, instead of using spring bar chains, the TruTrack connects to the trailer frame using heavy-duty, adjustable support brackets that hold the spring bars in place laterally and vertically. While regular spring bars angle from side to side, the integrated sway control arms resist this movement and keep the trailer better aligned. In addition to its integrated sway control, the CURT TruTrack offers the same great quality as our other WD hitches, making it the perfect choice for campers, livestock trailers and other heavy-duty trailers. We stand behind this uncompromising hitch, and to prove it, we back it up with a limited lifetime warranty.