Shimano ES51 Octalink Bottom Bracket
Shimano ES51 Octalink Bottom Bracket
Code: 181
LX quality Octalink bottom bracket, also compatible with Deore and XT.
  • Large 22mm diameter hollow pipe spindle reduces weight, increases strength and rigidity.
  • An 8 spline interface between the bottom bracket and crank results in a more rigid, non-loosening crank assembly.
  • Maintenance free sealed cartridge keeps out dirt, mud, water and allows the bottom bracket to be installed quickly without adjustment
Please enter your e-mail address below then click Notify Me to be notified when this item comes back into stock. We will not use your e-mail address for any other purpose.
The following errors occurred:

Please correct the errors and try again


Shipping charges for this item to United States: $6.43

Spend $64.25 or over and get free shipping
$ 6.43
General information about our shipping
This BB is the reason why I still haven't upgraded to Hollowtech II crankset. I did about 9 000 km on one, commuting everyday in every weather + quite a lot of MTB rides (often in mud to the axles level). Then it developed some play, so I replaced it cheaply, thanks to Merlin Cycles :)
A reliable bottom bracket and easy to install
Easy to fit once I found the plastic shell hidden in the 'secret compartment' at the bottom of the box. (Thanks Merlin Cycles for pointing this out). Very smooth BB.
Replacing the same component that lasted me two years before becoming slightly loose and clunky. Easy to install, cheap and works brilliantly during its lifetime.
Excellent all round great product and amazing customer service and brilliant quick and efficient delivery
Fits nice and tight with no play and has not worked lose. Really stiff and fits on my Reign like a screw in a hole.