Rapid Drive hub design instantly transfers effort into forward momentum;Tubeless Ready (TLR) rims allow for quick transition to tubeless system;Offset spoke bed reduces wheel dish for stiff and stable performance;Interchangeable axles allow for compatibility with more frames and forks;Lightweight alloy rim (44mm outer, 39mm inner width) and 54 tooth Rapid Drive hubs;6 bolt 100x15 front hub, 135/142x12 rear hub;SRAM XD available;Includes Bontrager Tubeless Ready (TLR) rim tape and TLR valve stem;