Shimano Dura Ace Di2 ST-R9180 + BR-R9270 Hydraulic Disc Brake - 2x11-speed - Flat Mount - Set RW

J-Kit (Easy Hose Joint System)

At brake systems with J-Kit hose joint the brake lever features an integrated olive what makes an easy brake hose installation and removal possible.

Shimano Dura Ace Di2 ST-R9270 STI brake/shift lever

The electronic Shimano Dura Ace Di2 ST-9180 Dual Control lever is especially suitable for Time Trial and Triathlon handlebars. The STI lever not only offers different grip positions, it also allows the hand to remain on the brake lever to trigger the shifting process. This is possible because of the Synchro-Shift mode which makes just one button on each shift/brake lever sufficient to operate rear and front derailleur. The system decides which of the two components is used to change gears. For individual adaptation, the brake lever also features the option of reach adjustment.

Ports: 1x EW-SD50

Shimano Dura Ace BR-R9270 disc brake caliper

Its one-piece Mono-Body design not only makes the Shimano Dura Ace BR-R9270 brake caliper incredibly light, but also gives it outstanding stiffness values. At the same time, the Flatmount brake made from a single, cold-forged aluminium block proves that high performance is also possible with compact dimensions.

A 10 % increase in brake pad spacing also allows for a significant reduction in noise during braking. In addition, when the RT-MT900 brake disc rotor (sold separately) is used, its deformation-resistant design, even with increasing heat, helps to create an extremely quiet and smooth braking system.

To simplify maintenance, the hydraulic 2-piston brake caliper not only features the proven One-Way-Bleeding system, but also a separate arrangement of bleed nipple and opening screw. On the one hand, this minimises the risk of the bleed kit hose slipping off when opening or closing the system and, on the other hand, makes it unnecessary to dismantle the caliper from the frame for bleeding process.

If you need more detailed information about the single parts of the groupsets check the articles in the referring categories.

Material:

Weight (manufacturer's specs):

approx. 120 grams (front caliper)
approx. 110 grams (rear caliper)

Scope of supply:

• brake/shift lever  (without EW-SD50 Di2 cable)
• brake caliper (for 160 mm brake discs) incl. L03A Resin Ice-Tech brake pads (without disc rotor)
• SM-BH90 brake hose (1000 mm front / 1700 mm rear)