Slim ergonomically designed 105 Dual Control Levers for hydraulic disc brakes offer powerful braking and effortless 12-speed shifting Ergonomic short shift arc follows natural hand movement with inward shift stroke distance reduced for rapid and precise gear changes Hydraulic brake lever provides powerful, controllable and consistent stopping power with less effort especially from the hood position Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear Kit includes ST-R7120 STI, BR-R7170 flat mount brake callipers with pads, hoses, and mineral oil (without rotors or adapters) Tuneable reach adjusters enable custom fitment for hands Comes complete with Optislick coated cables and silicon greased outer casing to further reduce shift friction and increase service life Easy bleed and clean hydraulic system, for use with Shimano mineral oil only
