External bearing bottom bracket suitable for Shimano Hollowtech ll Mountain Bike cranksets.

• HOLLOWTECH 2: Optimum balance of lightweight and rigidity.
• Outboard bearings provide additional stability
• Minimal bearing interface for smoother rolling

Specifications:

• Pipe Billet Spindle Mounting: Hollowtech ll Integrated BB
• Chainline staiblizer: Yes
• BB Shell Width: 68/73mm
• Spindle Length: hollowtech ll
• Material: Aluminium
• Weight: 100g