The Ultra-Efficient MA Chassis The MA (Midship AERO) Chassis has its motor into the center, and features a design which concentrates upon attaining outstanding aerodynamic performance. It gives six certain low-friction rollers, a rear skid club alongside fast features developed because of several years of design experience. The single-piece monocoque framework also guarantees that assembling and keeping the automobile well-maintained is an activity that can be done by novices and veteran racers alike. The following, the MA chassis features a 3.5:1 gear ratio. Specs Length: 156mm Width: 97mm Height: 45mm Includes Torque-Tuned 2 Motor PRO Simple snap-together assemblySeparately Required ItemsR6/AA/UM3 batteries (x2)