If I want a good quality 12t cog what should I be searching for?
The unused Dura-ace one I'll flog you for a tenner plus postage if I can find the bugger...
If you find that would be awesome, as much as I should be willing to spend $60-$75 dollars on a cog for the bike I ride the most, it does niggle a bit.
@Colin_the_Bald started
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If I want a good quality 12t cog what should I be searching for?