Traxxas Black X-Maxx Wheels & Belted Sledgehammer Tires (2) - 7871Belted Sledgehammer tires deliver game changing stability and control whether youre slinging mud or setting speed records. The wide, open block tread design wont clog up with dirt or debris and the lightweight belting maintains the tires shape for a larger contact patch, more grip, and responsive handling at any speed. At 8. 4" tall, the Sledgehammers increased diameter gives your X Truck a more powerful stance with even higher ground clearance.