I need to replace my '04 Specialized Enduro Comp bottom bracket.
The specs say that the OEM is a Shimano ES-30 68x121.
My cranks are model FC-M540.
I'm buyng a new cassette, chain, chainrings, etc. so I can freshen-up the bike when winter arrives. I ride frequently and the drive-train parts need replaced.
Will any Shimano Octalink 68x121 bb fit? I'm having a hard time locating an ES-30 at the usually discount shops. I have found the bb, but for twice the price of an XT unit, which doesn't makes sense.
My spider is also a little loose from banging the chainrings into rocks & logs, but just barely. I suppose I could replace the whole mess (cranks, bb, rings) but I'd rather just slap a new bb in it for now.
Anyways, I see a ES-51 for $20 at Cambria bikes. Will that work?
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