The BIG ROCK CREW CAB 4X4 3S BLX is a ready-to-run monster truck built for scale realism and dirt-chucking action, with 50+ mph speed potential. Its Spektrum™ SLT3™ radio, Firma™ brushless motor, tougher chassis, wider stance and stronger steering servo make it a capable basher straight out of the box. Just add batteries and a charger to get rolling.