The Shimano Dura-AceThreaded Bottom Bracket is designed to fit frames with a shell width of 68 or 70mm. It is a high-end bottom bracket that is built to last and offers excellent performance.

This bottom bracket features high-quality bearings that are designed to reduce friction and improve power transfer. The bearings are also highly durable and require minimal maintenance, ensuring long-lasting performance.

The Shimano Dura-Ace Threaded Bottom Bracket is easy to install and comes with all the necessary hardware. It is also compatible with a wide range of cranksets, making it a versatile choice for cyclists who demand high performance.