Originally Posted by
Mr IGH
Quick update: I bought the hoods for the Tiagra 4600 levers, they are an EXACT match of the old 4500 hoods. Same mold marks, same letters on the inside even, I can't find any difference. I have ~1000 miles on them with my 4503 levers they work very well. I just order a few sets to keep just-in-case, only $10 a set from Universal Cycles:
https://www.universalcycles.com/shop...&category=1603
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Tiagra ST-4600 STI (Black)
Mfg #:Y6UM98090
UPC: 689228987470
Thank you! I grabbed a couple. Just in time too.