Ultegra components offer an ideal balance of light weight and stiffness making it the perfect choice for both enthusiast and competitive riders~Must be used in conjunction with super SLR levers for correct leverage ratio~Enhanced brake arch proportions give a quicker linear response and increased power~Low profile outer cable stop position improves cable routing for reduced friction~Cartridge brake shoes for easy replacement~Convex washers on the brake shoes offer toe-in brake adjustment and easy alignment~Lightweight aluminium construction with an anodised finish to preserve the good looks