Shimano Dura-Ace ST-R9270 Hydraulic Disc, Di2 E-Tube STI Set, Flat Mount Calliper, Left Rear

Shimano's flagship Dura-Ace ST-R9270 represents the pinnacle of electronic shifting integration and hydraulic braking performance. This Di2 E-Tube compatible STI set combines precise electronic gear selection with powerful hydraulic disc braking in a single, ergonomic lever assembly. The flat mount calliper design ensures compatibility with modern frame standards while delivering consistent, modulated stopping power. Purpose-built for competitive road cycling, this left rear unit pairs seamlessly with matching front shifters to create a fully integrated drivetrain system. Premium construction and Shimano's renowned reliability make this an investment in performance that endures.