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Old 11-20-14, 11:31 PM
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Location: Alameda, CA
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I've only read about it happening to the boron frames. I have a boron tubed mountain bike and the tubes are very thin. Had to have some repairs made because it was dinged and tweaked in the rear triangle, but no issues around the bottom bracket. In the photo you can just see where a reinforcing plate was brazed in at the brake boss. Sweet bike, I haven't seen another one on the internet yet.

2002 Bianchi Tycoon XL Boron by PeterDSims, on Flickr
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