Shimano Dura-Ace ST-R9270E Di2 Shift/Brake Lever + BR-R9270 Hydraulic Disc Caliper - Right/Rear 12-Speed Flat Mount Black The ergonomics on the Shimano Dura-Ace ST-R9270 dual control levers bring new levels comfort and control to road cycling. With fast wireless shifting and precise brake modulation, Dura-Ace redefines performance. The Dura-Ace BR-R9270 hydraulic 2-piston calipers are sleek and compact. Mono-body construction ensures light weight and rigidity, proving that good things can come in small packages. The wireless connection provides a clean cockpit, enhancing the aesthetic of your bike while keeping shifting lightning fast1.5 to 2 years of battery life with easy-to-change CR1632 shifter batteriesWider pad clearance decreases the chance of rotor rubRaised hood peak improves ergonomics, while a longer hood body increases hand supportCompatible with satellite shiftersMaintenance-friendly bleeding process See More Rotor Included: NoPad Compound: ResinColor: BlackBrake Caliper Mount: Flat MountHydraulic Hose Length: 1700Brake Lever Use: RightHydraulic Fluid Type: Mineral OilBrake Lever Actuation: HydraulicRear Der/Shifter Compatibility: Shimano Road Di2Drivetrain Speeds: 12Adjustable Reach: YesDefined Color: Black