Ark’s XO Series Jockey Wheels are the toughest, most advanced Jockey Wheels in Australia today. Not only are they tough, but versatile also – with multiple height options, a highly manoeuvrable trailing yoke design, different yoke locking positions and now available in many sizes, weight ratings and styles. Thoroughly tested and continually improved, the XO Series Jockey Wheels have fast become a standard within the camper trailer and caravan industry.