LEGO Monster Jam sets are a series of LEGO Technic sets that recreate the look and feel of popular monster trucks from the Monster Jam arena. These sets are designed for kids who love building and racing with realistic vehicles that have pull-back motors, authentic graphics, and cool features. The sets are also 2-in-1 models, which means they can be rebuilt into different vehicles. Sets include Grave Digger, Megalodon, Dragon and more.