When you train to reach the top step, you need a wheelset that works as hard to get you there, and Roval's Control SL 29in Carbon Boost Wheelset is your sure-footed cross-country racing companion. We trust Roval's construction process because of their attention to detail--they shave weight with the bead hook's design, without sacrificing strength and impact protection. The 29mm internal rim width supplies a platform for modern tire treads, and retain a balanced compliance for a forgiving feel in rough terrain.