Bicycle Mechanics - Which Triple Ultegra BB-Help

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dgaddes
03-28-04, 08:01 AM
I'm upgrading from 105 triple crankset to ultegra triple on an '01 Trek 2200. Can/should I continue to use my current 105 BB which seems fine (smooth, no noise)? If I should change it to ultegra, how can I figure out which one to get since both a 68 x 118.5 and a 70 x 118.5 are listed at supergo for use with triple cranks.

dobber
03-28-04, 10:18 AM
I'm upgrading from 105 triple crankset to ultegra triple on an '01 Trek 2200. Can/should I continue to use my current 105 BB which seems fine (smooth, no noise)? If I should change it to ultegra, how can I figure out which one to get since both a 68 x 118.5 and a 70 x 118.5 are listed at supergo for use with triple cranks.

Unless your moving from a tapered to splined crank, I'd see no reason to change if you are happy with the performance. Treks would be using the "68".
bhchdh
03-28-04, 10:23 AM
When you take the 105 out it will say 68-118.5, or some thing simialer.

Rev.Chuck
03-28-04, 02:45 PM
The 70mm BB is Italian thread. You can keep your 105 BB, it is the same axle length, and spline depth.
dgaddes
03-28-04, 03:52 PM
Thanks for the info. I'm going to stay with the 105 until its shot. Now I know what to replace it with.