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Trek BB90 non drive side problems

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Trek BB90 non drive side problems

Old 08-27-13, 07:12 AM
  #1  
sojourn
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Trek BB90 non drive side problems

Any of you wonderful folks experience bottom bracket issues on the Trek BB90 bikes?
I did a little research and found some design (?) issues that possibly effects the non drive side bottom bracket but wanted to get some feedback from this community as a sanity check.
Thanks for any experiences you would be willing to share good or bad....
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Old 08-27-13, 10:34 AM
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cxwrench
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Haven't had any problems w/ bikes model year '11 and newer. I've worked on some earlier bikes but haven't seen any of the noise issues I've heard about. BB90 is a pretty simple system that makes good sense. I've experienced some very, very small differences in the size of the bearing bore, but none of the 'looser' ones have ever been problematic. I'm on my 3rd BB90 bike (2 Madones, 1 Cronus Ult.) and they get washed a lot and ridden hard. Never an issue. I use lots of grease when installing bearings, and make sure they're pressed in completely and that they're straight.
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Old 05-13-20, 11:52 AM
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bb90. replacement

BB90 is horrible. The non-drive side tends to rust, creak, seize... I am trying a token ninja as a fix. Trek should be ashamed for selling this junk in expensive bikes. I have bottom brackets from the 1980s that still work well. I have about 12 replacements of this junk in my 2012 madone with shimano cranks. I will never buy a Trek again.
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Old 05-13-20, 05:13 PM
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Mine was noisy since brand new. Replaced it with a Token Ninja and have not looked back. This on a 2018 Domane
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Old 05-15-20, 10:35 PM
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I just replaced both bearings on a 2013 Trek Madone. I felt a little rocking in the crank arm, took off the left crank arm, slid the left arm thru the shell, and heard the NDS bearing hit my garage floor. The NDS bearing was no longer an interference press fit. It’s a common problem and Enduro makes BB90 bearings with a slightly oversized diameter to reestablish the press fit.

Current Treks no longer use BB90 and are going back to threaded BB, if that’s any indication of the success of the press fit BB90 system.
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