EX 1700 SPLINE® Aluminum Enduro Wheel: for the world’s toughest enduro trails. This high-performance model embodies all of our expertise in aluminum wheels. Based on our renowned 36-tooth RATCHET hub, the EX 1700 SPLINE features an ultra-sturdy, 30 mm-wide welded aluminum rim. Designed to withstand the most intense enduro races, its lightweight construction provides the agility needed for long, demanding climbs. Built with double-butted Competition straight-pull spokes, the EX 1700 SPLINE wheel can take a beating.