External BB Question

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03-14-10 | 06:38 AM

skijoring

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Joined: Sep 2004

Posts: 128

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From: VT

External BB Question

My wife's bike has a Shimano 105 Triple with external BB cups. Can I put replace them with an Ultegra set of cups, or do I have to track down 105 level offerings?

https://www.nashbar.com/bikes/Product...1_10000_200423

They appear to be the same width.

Thanks.

03-14-10 | 07:39 AM

onbike 1939

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Joined: Dec 2004

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From: Fife Scotland

Bikes: Airnimal Chameleon; Ellis Briggs; Moulton TSR27 Moulton Esprit

Not sure if these ar equivalent but 105 cups are seen as being good value. In fact it's recommended that you should use these to replace certain FSA ones as I have done.

03-14-10 | 08:04 AM

TLCFORBIKES

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Joined: Feb 2010

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From: Raleigh NC

Bikes: 1983 Gureciotti/full SR 2002 Casati Record 10 speed 1995 Colnago C40 2007 Sram Rival 2006 Isaac Sram Force 2000 DEAN Ti DA 10 speed 1987 Schwinn Prologue Funny Bike 2001 Pinarello DA 9 speed 2008 Element6 Record 10speed Origin8 Lutegra10speed

The 105 exterior BB is a good BB. As long as it is installed properly nobody will see any difference between the 105 & Ultegra BB's.

03-14-10 | 08:30 AM

AEO

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Joined: Jun 2007

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From: A Coffin Called Earth. or Toronto, ON

Bikes: Bianchi, Miyata, Dahon, Rossin

tiagra/105/ultegra/dura ace external BBs and cranksets are all interchangeable

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