Ultra-rugged Sledgehammer tires provides extreme traction and control for a variety of off-road terrain. At 8.4” tall, the Sledgehammer’s increased diameter gives your X-Maxx a more powerful stance with even higher ground clearance. The tires' open block tread design clears mud and debris for unmatched traction in loose surfaces. Sledgehammer tires come pre-mounted to massive 6-spoke X-Maxx wheels with an ultra-tough 8s-rated glue bead for the most extreme high-speed off-road action.