Wheel Factory hand built versatile wheels DT Swiss EX 511 rims have been designed to need the demands of modern Enduro racing at the World Cup level 30mm internal width is ideal for tires between 2.3" 2.8" These 21mm deep, tubeless ready, disc specific rims are bombproof and offer superior performance and reliability in Trail, Enduro, and DH use DT Swiss patented Pro Head Reinforcement System (PHR System) is designed to balance the load transferred to the rim Bitex BX201 FG hubs provide an excellent value for preformance All hubs use IS6B disc brake mounts Built with DT Swiss Competition double butted spokes (2.0/1.8/2.0) and brass DT Swiss Squorx nipples Hand laced and trued in the USA