1Step up to all the latest technology with the Shimano R785 Road/CX Di2 STI lever and disc brake caliper set. Electronic shifting and disc brakes are revolutionizing how we ride our road bikes and Shimano is leading the charge. These integrated levers will operate any of Shimano’s Di2 electronic front and rear derailleurs while hydraulic reservoirs are built-in to activate its disc brakes. All the hose and hydraulic fluid needed to set up the brakes is included however, disc rotors and wiring for the Di2 electronic shifting is not. Also, we recommend that installation be performed by an certified mechanic. Experience the best in shifting and stopping power with Shimano R785 Di2 STI lever and brake caliper set.