Shimano Octalink Bottom Brackets

Shimano use the Octalink spline system on their mid-range cranks and bottom brackets. It is being replaced on the dearer cranksets with the Holowtech II system (outboard bearing).

Shimano BB-ES25 68 x 113mm
+
81611
!
Basic Shimano Octalink Bottom Bracket.
Weight is for 126mm axle length. The ES25 bottom bracket also comes in versions to suit 73mm bottom bracket shells, and 68mm shells with an E-type front derailleur.

Shimano BB-ES25 68 x 118mm
+
81612
!
Basic Shimano Octalink Bottom Bracket.
Weight is for 126mm axle length. The ES25 bottom bracket also comes in versions to suit 73mm bottom bracket shells, and 68mm shells with an E-type front derailleur.

Shimano BB-ES25 68 x 121mm
+
81613
!
Basic Shimano Octalink Bottom Bracket.
Weight is for 126mm axle length. The ES25 bottom bracket also comes in versions to suit 73mm bottom bracket shells, and 68mm shells with an E-type front derailleur.

Shimano BB-ES25 68 x 126mm
+
81614
!
Basic Shimano Octalink Bottom Bracket.
Weight is for 126mm axle length. The ES25 bottom bracket also comes in versions to suit 73mm bottom bracket shells, and 68mm shells with an E-type front derailleur.