Shimano BR-R9110-R Dura Ace Rear Direct Mount Caliper for Chain Stay

Shimano BR-R9110-R Dura Ace Rear Direct Mount Caliper for Chain Stay
Integrated sleek low-profile caliper design
Comfortable riding with wider tire on rough road
Compatible with 28C tire size
Better clearance with wider tire
Intuitive braking control
Smooth and light operation
SLR-EV technology
Increased overall braking performance