leva cambio shimano dura ace st r9100 11vUnmatched in mechanical shifting and braking, the DURA ACE R9100 levers feature an extended 20. 8 mm travel adjustment range, lighter front shift action, and a slim, ergonomic shape that remains comfortable even after hours in the saddle. FEATURES Quick and intuitive shifting Shorter lever travel Redesigned internal shift unit Comfortable grip and action More precise lever position customization options Extended lever travel adjustment range (20. 8