Smooth shifting is key to a smooth ride and the quality of your inner and outer cabling can make as much of a difference as good quality shifters and derailleurs achieve the smoothest shifting yet with this complete gear cable set from shimano designed for top end dura ace 9000 mechanical shifting these cables will enhance any shimano shifting system key features complete top of the range gear cable set designed to suit dura ace 9000 gears fitting new gears or completely overhauling