Wherever the trail leads, SRAM's Roam 40 wheel is ready to go. 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. Stomp on the pedals and feel the excellent 4 pawl DoubleTime hub with 52 points of engagement. Ditch the tubes with the full UST compatibility to reap the rewards of excellent traction, control, and fewer flats. And, the Roams' great features continue with the Solo Spoke design that uses one spoke length to fit the entire wheel. This rear wheel comes with a quick release and 12mm thru-axle end caps that can be interchanged without tools.