The Shimano Ultegra Press Fit Bottom Bracket is designed to fit frames with a shell width of 86.5mm. It is a high-performance bottom bracket that is built to last and offers excellent performance.

This bottom bracket uses press-fit technology to install the bearings directly into the frame, eliminating the need for external cups. It features high-quality bearings that are designed to reduce friction and improve power transfer, ensuring smooth and efficient pedaling.

The Shimano Ultegra Press Fit Bottom Bracket is easy to install and is compatible with a wide range of cranksets, including Shimano Ultegra and other Shimano road cranksets with a Hollowtech II spindle interface.