leva cambio shimano dura ace st r9100 l 2x11vUnmatched in mechanical shifting and braking, the DURA ACE R9100 levers feature an extended lever travel adjustment range of 20. 8 mm, lighter front shifting action, and a slim, ergonomic shape that remains comfortable even after hours in the saddle. FEATURES Fast and intuitive shifting Shorter lever travel Redesigned internal shift unit Low energy chainring shifting Redesigned front system with new derailleur Comfortable grip and action More options