XTR bottom bracket 73/122mm

Re: XTR bottom bracket UN91 73/118mm

Hi mate I have a new XTR un91 in 73 x 115 would that be any good did the do 118mm?
 
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Thanks vmlopes, i was hoping to get somthing a bit lighter but i think i might have to settle for the UN54/55. 300g :oops:

thanks

Dan
 
For XTR 900 cranks you need a 107-110mm spindle, as they are low profile cranks

For XTR 730 cranks you need a 122.5 spindle. The BB-UN7X (cartridge type) weigh around 250g, so not too bad. You can also use the BB-UN730; not sure about the weight, though.
 
Not saying they didn't make 122.5 91s, but I've never seen one.

If you're stuck I have a 122.5/73 UN-72. Problem is shipping from here would be double what it would be from a UK supplier........if they have stock.

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There was no 122 in un-9x
Just 107/113/115 then later the 110
It was only designed for XTR and Dura-Ace so no need.

You can of course pick up other models and brand in lightweight steel or Titanium setups.
 
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