Traxxas TRX-4 All-Terrain Traxx - Track Set of 4 (complete set front & rear)New all terrain Traxx provides the most significant traction upgrade you can make to the TRX 4. The TRX 4 already has a go anywhere attitude and the gear to match, but installing a set of Traxx yields a machine that feels practically unstoppable on virtually any terrain. The enormous contact patch and grippy treads shrug off the deepest mud and float across deep sand. Traxx raises the portal axles even higher (over 16mm!) for increased ground