SRAM DB8 4 Piston Disc Brake Set - Diffusion BlackSRAM DB8 4 Piston Disc Brake Set Diffusion Black DB8 is our simple, robust, and powerful brake for riders who prefer to set and forget. The low maintenance Mineral Oil system uses proven lever technologies and features easy adjustment access and superior ergonomic comfort. Code like power is no surprise, as DB8 utilizes similar caliper architecture and existing brake pads. New lever optimized for tool access. Code like power. Uses existing Code pads.