Shimano dura ace 9000 are the next generation of mechanical sti shifters put to the test in competition and used in victory by pro cyclists in every conditions including road across the pav or mud these 11 speed shifters have even been used by the 2012 tour de france team sky ergonomically improved the 11 speed dura ace 9000 sti levers feature smaller sleeker hoods for increased comfort and control release lever stroke has been reduced by 30 compared to the st 7900 while shifting eff