Impressive 4WD Powertrain An inline Super 370 motor bolted to an aluminum motor mount powers the 18B. The specially designed mount accommodates most aftermarket motors too. Power is delivered to the wheels via an efficient shaft drive connected to adjustable front and rear ball bearing differentials. Oil-Filled Shock Suspension Drivers can get rough with the little 18B thanks to its robust off-road suspension. The oil-filled shocks absorb the bumps and provide excellent handling at higher speeds. The four lower arms are symmetrical and work with the molded upper suspension links to give the 18B optimized suspension geometry right out of the box. XP Series Electronics The modular nature of the XP electronics make it easy for racers to get to the receiver, steering servo and speed control.