Shimano GRX BR-RX810

Model: GRX BR-RX810. Shimano GRX Levers. Brake Type: Hydraulic Disc. Cervelo P3 Ultegra Carbon TT / Tri Bike 54cm 2 x 11 Ultegra Rim Brake + Extras (#366074611660). Mount Type: Flat mount. Position: Front & Rear.