Roadies: Shimano BB Help

[Helpmytrap]

I'm looking for a new BB for a build, I will be transferring parts over from an older bike but the BB threads are different (English vs Italian.) Is there any difference between the Dura Ace 7800, 7900 and 9000 BB cups? I have a FC-7800 crank.

 

Or does anyone know where I can get just the Italian thread cups and seals and source bearings somewhere else?

Edited August 21, 2013 by Helpmytrap

[TK-Sp3cialiSt]

I have an Italian thread Shimano 105 BB sitting in my toolbox(octalink)

[Helpmytrap]

Octalink wouldn't help me. It is a Hollowtech II BB.

[TK-Sp3cialiSt]

Yeah, i checked the crank after....best bet would be a bike shop...

[NotSoBigBen]

I'm looking for a new BB for a build, I will be transferring parts over from an older bike but the BB threads are different (English vs Italian.) Is there any difference between the Dura Ace 7800, 7900 and 9000 BB cups? I have a FC-7800 crank.

 

Or does anyone know where I can get just the Italian thread cups and seals and source bearings somewhere else?

 

I would hazard a guess that they are all the same as in they will work but apparently a 'quality' and 'weight' difference, quality hard to quantify I guess but weight will surely be negligable?

[Tumbleweed]

I would hazard a guess that they are all the same as in they will work but apparently a 'quality' and 'weight' difference, quality hard to quantify I guess but weight will surely be negligable?

 

Price difference, however, isn't negligible!

[Helpmytrap]

Price difference, however, isn't negligible!

Online: 7800 is R300, 7900 is R350 and 9000 is R500 (R600-650 at bike shops!!)

 

Problem is that I cant seem to find stock of the 7900 anywhere.