Thread: Vintage Shimano Chainrings
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Old 04-25-19 | 06:46 PM
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Originally Posted by rgh
I'm restoring a couple of 1984 Trek 620's. Does anyone happen to know the meaning of the lettering on the chainrings? 50t is obviously the tooth count but what is IB or HK? Just curious.
I tried to post photos but I guess I'm not experienced enough to do that yet.
Those are just Shimano(?) or Sugino date codes, not something to worry about.
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