The Shimano Ultegra FC-R8000 cranksets, chainrings and bottom brackets
Shimano Ultegra FC-R8000 crankset, 46-36 tooth ratio, 175 mm length.
Shimano Ultegra FC-R8000 crankset, 53-39 tooth ratio, 170 mm length.
Shimano crank arm for Ultegra FC-R8000, left, 165 mm length
Original Shimano Ultegra bottom bracket, SM-BBR60, for Hollowtech II road bike cranksets, BSA thread, 68 mm installation width