New and used stacker trailers for sale. Stacker trailers are used to transport vehicles and equipment and offer multiple levels of storage, which is perfect for motorsports enthusiasts and professionals including racers, race teams and crews, Motorcycle and ATV riders, track day fans, etc. The trailers, which are often customized, allow for haulting multiple vehicles, maximizing space and offering convenience for the user, and are manufactured by multiple brands including RPM, Kenworth, Haulmark, TPD, United, Pace, Progressive, ATC and more.