The sram roam 40 aluminium clincher 275 wheel wherever the trail leads roam 40 is ready to go aluminum rims with taper coretrade profile bring lighter weight and higher dent resistance the double timetrade hub delivers strong swift engagement and the durable speedballtrade bearings are precision machined for performance you can trust with a smart balance of weight inertia and stiffness roam 40 makes sure yoursquore always ready to roam sram roam 40 aluminium clincher