Whether we're cruising singletrack or tackling tough, technical sections, the 30 HD Mountain Rim has the performance we need to go faster. It's designed to stand up to abuse with a 30mm width for use with 2. 5in tires and a redesigned inner rim bed that eases tubeless installation. Its asymmetrical structure is built to be stiffer and stronger, leaving us with an increased sense of confidence and a desire to ride. This is the rim for all-mountain and enduro riding that increases that smooth feel and gets us moving at top speeds.