Disc brake caliper front Shimano GRX BR-RX400

With a low-profile Flat Mount design, the SHIMANO GRX BR-RX400 hydraulic disc brakes provide greater control for mixed terrain riding.Excellent heat dissipationFlat mountConvenient tool accessSimple wheel replacementEasy and clean bleeding systemNever hesitate to tackle rough surfacesSimple set up and maintenanceONE WAY BLEEDING was developed for quick and easy prevention of air in our hydraulic system. We have streamlined the oil route throughout the system to prevent air bubbles from being captured in the system. One way oil routing plus a funnel tool with mineral oil provides an easy and clean bleeding system.