Most hitches on the market use 50 year old technology with clunky steel cams or friction sway controls that correct sway after it begins. TrackPro is the first weight distribution hitch to use Sway Management Technology along with two points of friction sway control. Built-in Soft Ride Technology gives a smooth, premium ride under all road conditions. Back up without removing the hitch. Spring bars are made from spring steel; providing a softer, smoother ride. This weight distribution kit is designed for trailers that have tongue weight up to 800 lbs. and/or no more than 8,000 lbs. of gross trailer weight.