Slim ergonomically designed Tiagra Dual Control Levers for hydraulic disc brakes offer powerful braking and effortless 11-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-R4020 STI, BR-RS405 flat mount brake calliper with pads, hose, and gear cable (without rotor or adapter)
Tuneable reach adjusters
Easy bleed and clean hydraulic system, for use with Shimano mineral oil only
Compatible with 11-speed chains and RD-R4000/ RD-U6040 rear mech only