Dura Ace SM-BB92-41B Press Fit Bottom Bracket

This Dura Ace bottom bracket features an 86.5mm wide BB shell and 41mm diameter BB cups. It also comes with an inner cover, providing reliable performance and protection for your bike.

To use this Dura Ace bottom bracket, first make sure your bike's BB shell width is 86.5mm. Then, carefully press - fit the bottom bracket into the shell. When installing, handle it gently to avoid damage. During use, keep it clean and dry to prevent rust. If you notice any unusual noises or looseness, check the installation and make necessary adjustments. Regularly lubricate the moving parts to ensure smooth operation and a long service life.