Ultegra BR-R8170 Hydraulic Disc Brake Caliper - Flat Mount

Ultegra R8100 – Redefine Your Limits

Shimano’s Ultegra R8100 series was developed with a 100% performance-focused approach, where unmatched speed meets ultimate responsibility. This 12-speed road groupset delivers unprecedented control and comfort, no matter the scenario—be it a race, a personal time trial, or a casual ride.

Incorporating Hyperglide+ technology from the Dura-Ace R9200, the Ultegra R8100 also features Di2 components with wireless technology, ensuring effortless operation and seamless shifting.

Shimano Ultegra BR-R8170 disc brake caliper

All around improved, the Shimano Ultegra BR-R8170 caliper offers optimised dosing, quieter braking performance and extremely simplified maintenance.

While a faster-gripping initial braking force always gives the feeling of full control, the 10 % increase in brake pad spacing allows for a significant reduction in noise during braking, despite a flatter overall construction. 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.