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.
- 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
|SERIES||SHIMANO ALIVIO T4000 Series|
|Remarks||* w/ 1.8 mm spacer version also available for FC-M521|
|Structure_For chain case||✔|
|Axle length / shell width_121_68mm_(BC1.37)||X*|
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