Shimano BR-R9110-F Dura-Ace Direct Mount Brake Caliper FrontThe Shimano BR-R9110-F Dura-Ace Direct Mount Brake Calipers are T=the best balance between rigidity, weight and stopping power. More predictable, linear braking curve Sleek, aerodynamic design with less gap between pivot arms. Compatible with 28C tire size for comfort and traction over broken roads. This is the front version.689228741751