Shimano BB-R60 11 Speed Cups (Ultegra 6800/105 5800) - Bottom Brackets - Ribble Cycles This the current Ultegra level BB. Works for 10 and 11 speeds. As you can see, they are cheap. Any of the other Hollowtech II will work if you prefer a different color. Shimano Crank Arm Fixing Cap (each) - Chainset Spares and Accessories - Ribble Cycles This is the fixing cap, as they call it.