SHIMANO BB-ES300 Hollow-Type

Compared the power transfer of OCTALINK with the conventional square taper spindle, the 8-splined OCTALINK interface that connects bottom bracket and crank set increases the strength and rigidity for entire assembly.

Specifications:

• Model: BB-ES300
• BB Type: Octalink
• Structure: Standard
• Material: Steel, resin
• Shell diameter: BSA (BC 1.37)
• Mounting: screwed
• Weight: 265g