With smaller sleeker hoods the 11 speed compatible st 9000 sti units deliver improved ergonomics for better rider comfort and control with reduced lever stroke and lighter action sis indexed shifting 11 speed design smaller hoods improve ergonomics from all positions release lever stroke reduced by 30 compared to st 7900 polymer coated cables for the smoothest shifting shifting effort up to 47 lower than rd 7900 43 less effort at the end of the lever stroke than fd 7900