Designed for pro racers the mavic cosmic pro carbon sl tubular disc wheelset features a light aerodynamic and stiff design adapted to disk brakes the cosmic pro wheelset features an instant drive 360 freewheel to ensure low friction and fast engagementfeatures mavic cosmic pro carbon sl tubular disc wheelset perfect blend of lightness and aerodynamics 40mm wind tunnel optimised rim profile full carbon extra light rim light instant drive 360 hubs 3k full carbon fibre rim optimised spoke dish