The top-of-the-range, high-performance Dura-Ace hydraulic disc brake Di2 Time Trail Road Bike STI shifters/brakes provides control, modulation, and power with minimal effort in all riding conditions. Addressing the often complicated cable routing of time trial and triathlon bikes, the Dura-Ace R9180 levers deliver the confidence of hydraulic disc brakes to the sleekest bikes in the world. Coupled with the plug-and-play ease of Shimano Di2 electronic shifting, they offer a significant advantage in any race. Features: - Di2 Technology: Shifting is effortless and precise with Di2 technology. A light touch, as soft as a mouse click, instantly selects the correct gear for both the front and rear derailleurs. - Eliminates Mechanical Cables: By replacing traditional mechanical cables with electrical wires, Di2 technology eliminates poor shifting caused by contaminants, corrosion, and cable stretching, ensuring effortless gear shifts. - Full Synchronized Shifting: The fully programmable Synchro Shift allows a single shifter button on either side to control both front and rear shifting, customizable to your riding preferences. - TT STI Shifters: Each side features one shift button. - Lightweight Shifters: The shifters are lightweight, featuring carbon fiber lever blades and a carbon composite bracket body. - Hydraulic Brake Lever: Provides excellent stopping power with minimal effort, especially from the hood position. - Hydraulic Reservoir Tank: Maintains braking performance during pad wear by providing auto-adjust for pad-to-rotor clearance. - Adjustable Reach: Finely tunable reach adjusters ensure a custom fit for all hand sizes. - Free Stroke Adjustment: Allows for precise pad-to-rotor contact setting. - Cable Requirement: Levers are supplied without electrical cables, which need to be ordered separately to suit your setup. BR-R9270 caliper: With an all-new MONO-BODY construction design, high performance braking has reached a new peak. The BR-R9270 caliper drops weight while also providing increased pad clearance, ensuring a quieter ride. Lastly, a new bleeding process makes maintenance easier than ever. Electrical Cables: Levers are supplied without electrical cables, which need to be ordered separately. Left shifter is 2-speed, right shifter is 11-speed Kit contains left hand bled ST-R9180 STI, BR-R270 flat mount brake calliper with pads, hoses and mineral oil (without rotors or adapters) Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.