EBC vintage range discs are 100% British‐made using billet alloy centre hubs attached to European mill‐rolled, heat‐treated and tempered stainless DB420 steel. The centre hubs are attached to the rotor ring using EBC's patented SD‐System™ (square drive) rivets that helps prevent distortion under heavy braking, making these a perfect replacement for original discs maintaining the more subtle classic looks for vintage bikes.