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Manufacturer : 
SJS Cycles part number : 
Manufacturer part number : 
The Problem Solvers UP-CUP #54 was designed by our PD & D
team as a Shimano compatible non-drive side bottom bracket cup
for Shimano UN54 cartridge square taper spindle bottom brackets.

Product uses:
The UP-CUP #54 can be used to replace or UPgrade the plastic
non-drive side CUP found on Shimano UN54 bottom brackets.
It provides better durability and reliability for discerning square
taper bottom bracket users and retro-grouches. Never worry
about a cracked or broken plastic cup again!

Technical details:
Alloy construction. Installs with standard 20-tooth spline bottom
bracket cup installation tool.
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Questions & Answers (1)
Can I use this with an octalink ES51 BB?
06 Sep 2018
Hi there,

Unfortunately it is slight too small to fit that bottom bracket.