Ultegra components offer an ideal balance of light weight & stiffness, making it the perfect choice for both enthusiast & competitive riders. Dual-pivot calliper brake with super SLR-EV design for quick linear response, increased rigidity & enhanced braking power. Must be used in conjunction with super SLR levers for correct leverage ratio. Enhanced brake arch proportions give a quicker linear response & increased power. Low profile outer cable stop position improves cable routing for reduced friction. Spring tension adjuster for precision set-up. Adjustable toe-in on the brake shoes for easy set up. Added clearance for compatibility with 28C tire size.