The Reserve 30HD i9 Hydra Carbon MTB Wheelset is specially designed for trail riding and the abuse trail bikes dish out. From cruising mellow singletrack to crushing boulder-strewn steeps they deliver a do-everything performance that inspires the rider to go faster more smoothly. They feature a 30mm width for use with 2.5 tires and a redesigned inner rim bed that takes the hassle out of seating new tires.