【 Track Hugging Machine 】This is a high performance, shaft driven, Mini 4WD plastic assembly model kit. The Max Breaker's Super X reinforced semi-monocoque chassis allows for easy attachment of the body and features a four-point cross type battery holder. The low road hugging wheels and 24mm diameter slick tires provide this machine with a sharp aerodynamic presence and you can choose to install either a 3.5:1 or 4:1 (speed or power) gear ratio to best suit track conditions. Snap together assembly. A wide variety of grade-up parts are available to further customize your machine.