08-29-2017, 11:07 AM
I have a 1999 Trek 820 AL whose bottom bracket is dying. According to the spec sheet, it's a Shimano BB-CT92E, 68mm shell, 116mm spindle, English threading. What is the easiest way to identify a suitable replacement? I found a NOS BB-CT91 with the same measurements on eBay for $20, any reason not to pull the trigger on that? Thanks!