Is there anyway to just buy a few replacement cogs for my PG990 Cassette? I often double my mountain bike for fitness road riding duties so those bottom two gears get used alot and show signicant shark fin-looking wear while the rest of the gears look pretty darn good actually. It's actually causing a slight slipping sensation (i think) when im on my 11t gear when mashing hard.
But for the life of me, I cant seem to find any vendor who sells just the 11 & 12t cogs (the ones not attached to the spider). Do I have to replace the whole damn thing just to get a new 11t cog?
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