The #2900 ISR is designed for towing those bigger rigs. With a gross trailer weight of 18k pounds, this Industry Standard Rail SuperGlide out-performs other foreign-made hitches of the same class. The #2900 can be ordered with our better than theirs Industry Standard Universal Base Rails or simply keep the ones you have already in your truck bed. Fully automatic! It's a huge upgrade, at a small price and the best choice possible for many short bed truck owners! (hitch only, requires existing or new mounting kit, and capture plate for new installations)