Shimano, GRX ST-RX400-R / BR-RX400-R, Road Hydraulic Disc Brake, Rear, 10 speed, Flat mount, 140 or 160mm (not included), Black, Set

Description

* GRX ST-RX400 10 speed shifters and flat mount BR-RX400 hydraulic calipers* Anti-slip brake lever increases control on bumpy terrain* Raised brake lever pivot point increases leverage from the hoods* Adjustable lever reach* Compatible with GRX RD-RX400 and Tiagra 4700 derailleurs* Forged aluminum BR-RX400 calipers* Pre-assembled with SM-BH90-JK-SSR high power hose* Includes L03A resin pads with improved wear resistance