While tubeless wheels roll faster, they come with added weight and the hassle of a rim tape. In the quest for a lightweight solution with no compromise on rigidity, Mavic's engineers went back to the drawing board and came up with the new Cosmic SLR45 wheelset. 10% lighter and stronger than traditional wheel designs, Mavic's Fore Carbon Technology incorporates spokes that fit directly into a co-molded metallic insert that avoids the need to drill the upper rim bridge. This negates the need for rim tape, makes for easy repairs, and saves an additional 30g per rim.