Advice with Shimano Press Fit SM-BB91-41a/b

Arioth
Arioth Posts: 12
edited May 2011 in MTB workshop & tech
Hi guys. My bottom bracket is dead. Bearings in the left cup are damaged and i need to replace them. In the moment i have Shimano SM-BB91-41a cups. The frame is Cube Reaction. My bottom bracket is mtb but there is another model of it SM-BB91-41b. SM-BB91-41a is for 89,5/92mm shells and SM-BB91-41b is for 86mm shells. So question for the more experienced with these system. Can i use the cups from the SM-BB91-41b and use the inner shell/spacer from my SM-BB91-41a. Thanks guys
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