The Steel Used In The Ebc Rotor Blades Is A Special Stainless Blend With Higher Friction Effect Than Normal Heat Treated Stainless Steel Found On Stock Discs. Boasts Up To 10% Improvement In Friction Effect Improving Brakes Even Further. Universal Left- Or Right-Side Application. Weight Of The New Xc Series Is Reduced By 5-10% By Using A 6 Only Button Drive System On A Lightweight Alloy Centre Hub, Which Once Again Grabs The Lead Over Stock Parts. The Sd-System Uses A Square Sided Rivet With Many Advantages. The Sd-System Of Square Sided Buttons Means That The Rotor Can Expand Inwards And Outwards Unrestrained And That Perfect Rotor Functionality Is Retained At Any Speed Or Load. This Extends The Lifetime Of The Rotor And Prevents Distortion Failures. Also Fits: Triumph Speed Triple 1050 R 2012-2013 Triumph Sprint Gt 1050 2011 Triumph Trophy Se 1200 2013-2015