Our Shimano BB30/PF30 68mm ROAD BB.  It is compatible with Shimano™ Hollowtech II cranks. High-grade Enduro 2437 steel bearings are fully sealed and are a fantastic replacement BB for your Shimano™ drivetrain.

• This one BB is used for these frame types that have a 41mm Diameter:
  BB30 - 68mm Width Road x 42mm Diameter
  PF30 - 68mm Width Road x 46mm Diameter (Included Sleeve for PF30) 
  
• Made precisely to Shimano Road bearing stance spec.
  
• This 68mm BB CANNOT be used for MTN Cranks
  
• This BB IS NOT compatible with the proprietary Cannondale "BB30a" or "PF30a" frames.
  
• Frame shell cannot have any inner shell obstructions (like cable guides/screws) that prevent BB from installing.