Shimano GRX RX400 Flat Mount Hydraulic Calliper – Without Rotor Or Adapter – Grey
Never hesitate to tackle rough surfaces again with the GRX RX400 hydraulic disc brake calliper, part of Shimano's new gravel bike focused GRX component range. The demanding nature of the uneven or loose terrain where gravel bikes excel requires serious breaking technology. Shimano's solution has been to develop these flat mount RX400 callipers which provide exceptional breaking performance comparable to their dominant road disc brakes with similarly impressive heat dissipation. Shimano's years of experience have been used to ensure these hydraulic components are easy set up and maintain, including a clean and easy bleeding system.