Shimano GRX BR-RX810-R Rear Disc Brake (with L03A Resin Pad)

The GRX hydraulic disc brakes are the industry benchmark for affordable high performance.
Consistently predictable and powerful, the trail-rated new GRX BR-RX810 comes with a light, clean and durable integrated master cylinder. This saves weight and provides a sleek appearance. Refined levers provide improved feel and feedback, offering high power with a short brake pull. GRX BR-RX810 brakes retain tool-free reach adjust and Free Stroke adjust. The Rider Tuned system accommodates 140 to 203mm rotors and multiple brake pad choices.