Fast climbs and fast descents, from sun up until sundown, are the norm on SRAM's Roam 50 Wheels. They boast a dedicated balance of low-weight, strength, and width to excel on a wide variety of XC and trail-bike terrain. The 25mm wide rims give big tires the support they deserve for outstanding cornering control, and the rims are durable enough for day-after-day sessions, yet light enough for race day. Ditch the tubes with full UST tubeless compatibility, and reap the rewards of excellent traction, control, and fewer flats. And, the Roams' great features continue with their Solo Spoke design that uses one spoke length to fit the entire wheel and quick-release skewer and 15mm thru-axle end caps that can be interchanged without tools. You also have the option of SRAM's Predictive Steering hub for use with the RockShox RS-1 fork.