Originally Posted by MTBroadcyclist

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I had ordered a Shimano TX for $12 off ebay but after 2 months of cycling 1 hour/day (23km) the center of its wheels disintegrated. It worked fine, about as good as the Acera. I noticed that it failed after a recent ride when the drivetrain locked up. It had been doing that for quite some time intermittently and I was able to push through it in the past until one day after unable to pedal through it I stopped my ride, flipped my bike to check it out to discover the problem of my rear derailleur (the Shimano TX purchased from ebay).
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