Product Detail 27T Electric Motor: Tear up the terrain in-door or out-doors 20T pinion paired with an 87T spur gear gives you quick acceleration while still allowing for a smooth low end speed range Hi-Torque metal gear servo helps hold your line when rock crawling Based on the popular SCX10 chassis Durable composite rock sliders protect your body from damage and allows you to slide over rocks . The "1/10 SCX10 4WD RTR Trail Truck" is best product for you. We recommended 1/10 SCX10 4WD RTR Trail Truck