Responding to the demand from our top racers for even wider rims, we have developed an XC specific 25 mm wide rim profile. That's what's built into the XR 1501 SPLINE ONE 25. The result is a super capable, super light Cross Country wheel. It feels perfectly at home on the trails that have become tougher and rougher both up and down the mountain. And built with DT Swiss quality in every detail, from the hub internals to the spoke nipple, it makes sure you complete all the laps, weekend after weekend.