Forum home Road cycling forum Workshop

hollowtech BB upgrade

carrockcarrock Posts: 1,103
edited April 2010 in Workshop
I have a roubaix elite which has FC4500 Tiagra crankset

It's already been back to the shop for the BB regreasing, and is making grinding noise again, , so given the minor cost I'm just going to buy a new set of BB cups

I'm thinking of fitting Dura Ace cups, as presumably they're higher quality ( and only £26 compared to £15 for Tiagra cups

Anyone know if these units are interchangeable?

Logically they should be, but you never know....


  • keef66keef66 Posts: 13,123
    Come on, somebody must know the answer! I want to know as well; I was considering replacing my 105's with Ultegra if they ever wear out (reassuringly silent so far)
  • Simon NotleySimon Notley Posts: 1,263
    Yes, they're interchangeable. I've used DA/Ultegra/Tiagra together with no issues.
  • keef66keef66 Posts: 13,123

    I'll keep an eye open for some Ultegra in the sales.
  • carrockcarrock Posts: 1,103
    Just been to my LBS and bought a set of 105 cups

    He assures me that all Shimano cups ( Tiagra/105/Ultegra/Dura Ace ) are fully interchangeable

    Whether there's any difference in performnace or longevity I don't know- suspect they all use the same bearings but the more expensive cups have better seals and/or are lighter

    I'm surmising I need to apply a thin film of grease on the spindle shaft before sliding it home ( ooh matron )
  • carrockcarrock Posts: 1,103
    just installed the new cups- 105 cups fit perfectly- only took 10 minutes
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