INTRODUCTION

SHIMANO ACERA OCTALINK Bottom Bracket
BB-ES300-AK
SHIMANO ACERA - Bottom Bracket - OCTALINK - 121 mm Axle Length - 68 mm Shell Width

Stiff and lightweight for efficient power transfer, OCTALINK uses a quick and precise assembly and a reinforced spline construction.

FEATURES

Stiff and lightweight for efficient power transfer:
Durable spline reinforced construction
- 8-splined OCTALINK interface increases the strength and rigidity of the entire assembly
26 g lighter weight than BB-ES25

Quick and precise assembly:
Good chain line control with chain stabilizer

PRODUCT SPECIFICATIONS

MODEL NO: BB-ES300-AK
SERIES: SHIMANO ALIVIO T4000 Series
Remarks: * w/ 1.8 mm spacer version also available for FC-M521
Structure|For chain case: ✔
Spindle|Hollow pipe: ✔
Spindle|OCTALINK: ✔
Axle length/shell width (mm)|121|68 (BC1.37): X*