Shimano ES51 Octalink V2 Bottom Bracket
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Shimano ES51 Octalink V2 Bottom Bracket
Shimano ES51 Octalink V2 Bottom Bracket Info
The Shimano ES51 Octalink V2 Bottom Bracket is a threaded cartridge unit built for compatibility with Shimano's Octalink V2 splined cranksets. It uses a sealed cartridge bearing design to keep drivetrain friction low and maintenance intervals long — a reliable foundation for everyday riding and training builds.
Shimano's ES51 sits in the mid-range of their bottom bracket lineup, offering the same thread-in installation standard that mechanics and home builders trust for consistent, rattle-free fitment. The 68 x 118mm shell and axle dimensions make it a direct fit for standard BSA-threaded road and fitness frames running Octalink V2-compatible cranks.
Shimano ES51 Octalink V2 Bottom Bracket Specs at a Glance
- Shell width: 68mm (BSA threaded)
- Axle length: 118mm
- Interface: Octalink V2 spline
- Type: Sealed cartridge bearing
- Manufacturer: Shimano
