The Racers' Choice, 105 Brake Callipers Come In A Compact And Lightweight Design For High PerformanceLow Profile Aerodynamic Direct Mount Super Slr-Ev Dual-Pivot Design Provides Superior Brake Performance And Light ActionCan Be Used On Frames And Forks With Direct MountsMust Be Used In Conjunction With St-5800, St-6800 Or St-9000 Stis For Correct Leverage RatioEnhanced Brake Arch Proportions Give A Quicker Linear Response And Increased PowerLow Profile Outer Cable Stop Position Improves Cable Routing For Reduced FrictionCartridge Brake Shoes For Easy ReplacementConvex Washers On The Brake Shoes Offer Toe-In Brake Adjustment And Easy AlignmentLightweight Aluminium Construction, With An Anodised Finish To Preserve The Good LooksCompatible With 28C Tyres49 Mm Drop