XTM Rail 1/8 4WD RTR Off-Road Rail Buggy Brushless Heavy-duty brushless matched system includes industrial strength brushless ESC and heat-sinked Threaded aluminum oil-filled shock bodies with with heavy duty shock shafts Three race-level differentials which can be adjusted with silicone oils Completely adjustable race-tuned front and rear variable suspension geometry for camber & toe-in Aggressive tire design good for multiple surfaces. Optional sand-paddle tires available!