The sram roam 60 29in carbon clincher wheel uses a layering system onto stress points that makes it super tough out on the hillside whilst the carbon material keeps weight down so you have the ultimate strong and lightweight wheel that is capable for even the most toughest enduro races the sram bike wheel combines all technologies with layers of extra material so that it is one of the toughest out there whilst the carbon tuned rim ensures that weight is kept down to handle some of the longer cl