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 Post subject: mystery bottom bracket
PostPosted: Sun Sep 15, 2013 4:17 pm 
Retro Guru
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Joined: Mon Aug 19, 2013 9:02 pm
Posts: 304
Location: Lancashire
Hi Guys,

I found a bottom bracket in a box in the loft, it's a UN-54. What quality is this, as I can't remember. Is it LX?


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PostPosted: Sun Sep 15, 2013 5:02 pm 
retrobike rider
retrobike rider
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Joined: Fri Aug 08, 2008 2:36 pm
Posts: 16748
Location: Yorkshire, England
It is Shimano modern top of the range square taper bottom bracket still used today but called un55 as the plastic cup switched to metal.
It is in a gap is above the old lx models but not quite what xt Xmas


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