Wireless shifting inside integrated cockpits used to mean fighting hidden cables through headset bearings and stems that were never really designed to accept them. Shimano's Dura-Ace ST-R9270 dual control lever solves that headache by moving shift signals to Bluetooth Low Energy between the lever and the derailleurs, leaving only the hydraulic brake line running from the hood to the caliper. For anyone building or rebuilding a modern aero cockpit, that shift alone changes how the front end of the bike goes together.

The R9270 is sold individually as a left or right lever without the caliper or hose, which makes it the right part to source when you're replacing a crashed lever, converting a wired R9170 build to the R9200 generation, or piecing together a custom Dura-Ace 12-speed group. Note that R9200-series Dura-Ace is Di2 only — Shimano dropped mechanical shifting at this tier, so this lever is not a mechanical option, and the R9270 designation specifically indicates the hydraulic disc version rather than the rim-brake R9250.

Each lever runs on a CR1632 coin cell that Shimano rates for roughly 1.5 to 2 years of use, and swapping it takes a coin — no cable pull, no bleed disruption. The lever bodies were reshaped for the R9200 generation with a taller, slightly inward-canted horn and a flat section that extends 4.6mm further than the outgoing R9170, giving you a longer perch on the hoods for climbs and endurance rides. Reach Adjust offers 16.4mm of range for smaller hands or riders who want the lever tucked closer to the bar.