Shimano BB-ES300 Octalink Bottom Bracket 73x121mm Hollow Type

Technologies

Octalink -Compared the power transfer of OctaLinkwith 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

Axle Length / Shell Width 113/68 mm (BC1.37)

113/70 mm (M36)

113/73 mm (BC1.37)

118/68 mm (BC1.37)

118/70 mm (M36)

118/73 mm (BC1.37)

121/68 mm (BC1.37)

121/73 mm (BC1.37)

126/68 mm (BC1.37)

126/73 mm (BC1.37) Spindle Type Hollow pipe, OctaLink Structure Standard