Shimano, GRX Di2 ST-RX815-R / BR-RX810-R, Road Hydraulic Disc Brake, Rear, 11 speed, Flat mount, 140 or 160mm (not included), Black, Set

Description

* GRX Di2 ST-RX815 11 speed shifters/brake levers and flat mount BR-RX810 hydraulic calipers* Anti-slip brake lever increases control on bumpy terrain* Raised brake lever pivot point increases leverage from the hoods* Adjustable free stroke and lever reach* ServoWave action reduces freestroke and progressively increases brake leverage* Compatible with 11 speed Di2 GRX and road derailleurs* Forged aluminum BR-RX810 calipers* Pre-assembled with SM-BH90-JK-SSR high power hose* Includes L03A resin pads with improved wear resistance