Disc brake set rear Shimano GRX Di2 ST/BR-RX815

Excellent heat dissipationFlat mount and anti-mud specificationConvenient 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.SHIMANO GRX - DI2 - Hydraulic Disc Brake - DUAL CONTROL LEVER - 11-speed. The SHIMANO GRX DI2 DUAL CONTROL LEVER delivers light and responsive shifting for mixed-terrain riding. The ergonomic shifter design improves comfort and the textured, anti-slip brake lever increases control on bumpy terrain. The Di2 version offers the digital precision of SHIMANO electronic shifting and synchronized shifting. Weight: 373 g/pairShifter type: DUAL CONTROL LEVERRemote switch E-tube port (pcs) 2Firmware update by E-TUBE Project Multiple input HoldSHIMANO Mineral OilFree stroke adjust Servo wave mechanism Recommended brake hose (Kit): SM-BH90-JK-SSRFunnel bleeding Hose joint: StraightTooled reach adjustClamp band inner diameter:: 23.8-24.2 mm