Shimano Ultegra BR-8170 Disc Brake Caliper

This caliper uses a standard flat-mount interface, which is the current industry standard for most modern road and gravel bikes. Please check that your frame is specifically designed for flat-mount calipers before purchasing.

The updated design increases the gap between the brake pads and the rotor. This significantly reduces the likelihood of annoying rotor rub or clicking sounds while riding, especially when the wheel flexes under load.

This caliper is designed to work with Shimano's hydraulic road systems. It is best paired with Ultegra R8100 series levers for optimal performance, though it is generally compatible with other Shimano hydraulic road levers using mineral oil.

The fins on the pads act as a heat sink, pulling heat away from the braking surface during long or steep descents. This helps prevent brake fade and ensures your stopping power remains consistent even when the system gets hot.

Shimano has refined the bleeding process on this model to be more straightforward and cleaner than previous generations. While it still requires a bleed kit and mineral oil, the port access is easier to reach, making routine maintenance more manageable.

Yes, this caliper is compatible with both resin and metallic pads. However, ensure your rotors are rated for metallic pads, as they can be more abrasive than the resin pads included in the box.