The Ultra-Efficient MA Chassis The MA (Midship AERO) Chassis has its motor in to the center, and features a design which concentrates upon attaining outstanding aerodynamic performance. It offers six certain low-friction rollers, a rear skid club along with fast features developed as a result of several years of design experience. The single-piece monocoque framework also guarantees that assembling and maintaining the automobile well-maintained is an activity that you can do 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 engine PRO Simple snap-together assemblySeparately needed ItemsR6/AA/UM3 batteries (x2)