HBX TUMBLER 1/10 4WS ROCK CRAWLERThe Tumbler is ready to navigate the toughest terrain you can throw at it with its multi M. O. A. axle design and multiple steering modes. Inspired by full sized caged crawlers, the Tumbler features and M. O. A. (motor over axle) design for a lower centre of gravity and more control front and rear. In addition, the Tumblers is fitted with steering servos both front and rear for a full array of different steering options. These steering options can be