Shimano Ultegra BR-R8010-RS Direct-Mount Rear Seat Stay Brake Caliper Model=Cables Spoke Interface J-Bend Skewer Included

Spoke Interface J-Bend Skewer Included No Defined Color Silver Rear Axle 10x1 Threaded x 120mm Color Polished Silver Flange Diameter Right 66 Flange Diameter Left 66 Weight 230 Hub Drilling 32 Bearing Type Sealed Cartridge Hub/Brake Compatibility Rim Brake Cassette Body Type Threaded Track Center to Flange Right 28

}Manitou Mara Pro McLeod Air Seal Kit

8 notch - 43mm lockrings compatibility Bosch Active Line/Plus (MY 2017 and onwards)

It has enough lug to provide bite on the loose stuff and a tightly center tread that doesn't drag on harder surfaces

Shimano Ultegra BR-R8010-RS Direct-Mount Rear Seat Stay Brake Caliper Model=Cables Spoke Interface J-Bend Skewer IncludedShimano Ultegra BR R8010 RS Direct Mount Rear Seat Stay Brake Caliper. The Shimano Ultegra BR R8010 is a direct mount brake caliper. As part of the Ultegra R8000 series this brake is "pro proven" offering advanced control in all conditions and is customizable for your racing style. TECH SPECS Brake Lever Actuation Short Pull Super SLR Pad Type Cartridge Brake Position Rear Defined Color Black Brake Mount Type Direct Mount Road Caliper Weight 172