Bicycle Mechanics - ISIS equivalent for Shimano BB-UN52

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Silverexpress
06-12-06, 09:29 AM
Hello,

I have Ritchey WCS MTB crankset laying around that I'd like to install on my Bridgestone XO-4. The original BB on this bike is a Shimano BB-UN52 68x107 with an Alvio triple crankset.

The WCS crankset takes an ISIS BB, so would anyone know what the equivalent ISIS size would be?

demoncyclist
06-12-06, 09:32 AM
It isn't about equivalent sizes, it is about the proper spindle length to work with the WCS crankset. I would start at the Ritchey website and see what they recommend for that crank