Rs685 stihydraulic disc brake set wrs805 calipers precision engineered sti levers for hydraulic disc brakes offer powerful braking and effortless 11 speed shifting polymer coated shift cables are routed under the bar tape vivid indexing provides a constant amount of shift lever force across all 11 sprockets ergonomic short shift arc follows natural hand movement hydraulic brake lever provides powerful controllable and consistent stopping power with less effort especially from the hood positio