When preparing your brake system for competition use, the proper master cylinder for your application is all important. Our large-bore dual reservoir master cylinders come in three piston sizes: 15/16”; 1”; and 1-1/8”. Brake size and line pressure requirements will dictate which is the correct size master cylinder for your application. Built by the OE manufacturer, they are a safe alternative to your single reservoir master cylinder in the event of a front or rear brake circuit failure. They will fit the original master cylinder bolt pattern of all Mustangs and most Ford products. Pre-bent stainless steel lines for Mustangs are included with complete kits. Line kits are also available separately. For manual brakes only. (Note: Manual brake pedals have a different pivot point.)