Shimano BB-ES300 68 x 121mm Hollow Type Bottom Bracket

The Shimano ES300 bottom bracket is made to be used in conjunction with Shimano Octalink chainsets. The Octalink splined axle/crank arm interface creates a more rigid crank assembly compared to square tapered spindle.

Axle length / shell width_121_68mm_(BC1.37)

Spindle: Hollow pipe

Spindle: Octalink Features

Smooth and precise shifting performance with Hyperdrive technology

Quiet shifting operation by reduction of driving noise (48T)

Chain case compatible

ALIVIO logo (T4060), SHIMANO logo (T4010)

Better sealing performance (SM-BB52)

Colour options: Black