Will other chainsets work with Campag UT BB

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Joined: Sun Dec 19, 2010 20:04 pm

Will other chainsets work with Campag UT BB

Postby Not-another-hill! » Wed Oct 02, 2013 05:17 am


I have a Wilier branded FUlcrum carbon 11 speed standard chainset currently on my bike but would like a compact.

I cant afford a Super Record or Record compact so was looking at an FSA set up......however, i cant find any info on the. Campagnolo specific Ultra Torque BB system....

Will other chainsets fit the UT Bottom Bracket set up, or do i need to stick to Campag UT systems?

Alternatively, i suppose its change the BB too?

Any help greatly appreciated.....
Sunny : Wilier Zero 9 Di2
Rainy : 'De Rosa'
Mucky : Specialized Hardrock Pro

Mercia Man
Posts: 866
Joined: Thu Mar 29, 2012 15:31 pm

Re: Will other chainsets work with Campag UT BB

Postby Mercia Man » Wed Oct 02, 2013 08:43 am

The UT chainset/BB uses an axle with a Hirth joint in the middle - interlocking teeth held together by a single Allen screw. There are external bearing cups that screw into a traditional threaded BB shell. It's all one piece with the cranks so you can't fit other chainsets.

So if your bike has a threaded BB shell, you would have to buy, for example, a complete FSA system with cranks, axle and cups. I have no experience with the various press fit BB setups but I assume you would still have to buy a complete new system for those as well to get the compact gears you want.

Posts: 294
Joined: Sat Apr 17, 2010 17:28 pm

Re: Will other chainsets work with Campag UT BB

Postby ben16v » Wed Oct 02, 2013 08:56 am

the UT has 25mm axle - others are 24mm, i swapped mine out for shimano hollowtech 2 as i wanted a variety of chainsets to be compatible between bikes
i need more bikes

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