New UD2 rim laminate and Fore Carbon spoke attachment save 55g and eliminate rim tape (another 30g saved per wheel) 45mm deep 26mm wide NACA rim profile optimized for disc brakes. New Infinity hub plaform: stiff axle durable bearings and new hub design optimize lacing and spokes tension ID360 freewheel technology for instant power transfer. Threaded metallic insert is wrapped into the carbon for the nipples to thread into resulting in a drill-less design requiring no tape. Non-contact spoke lacing results in no noise under load and even distributes the tension more efficiently than standard hub types. Less drag more watts thanks to its 45mm rim profile and elliptical spokes developed by Mavic`s aero experts. Rear wheels feature Mavic`s new Instant Drive 360 freewheel