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Looks a bit sharky. If you are running ten speed I've got cassettes and some new 50/34 chainrings I need to get rid of. Hit me up.
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That chainring's had it. The cassette I'm not sure, the larger sprocket looks fine (but is likely to be used much less anyway), hard to say with regards to the smaller ones.
Chainrings: I happen to have the chainrings from a Force 22 crankset at home, completely unused as I converted it to a 1x setup. However, I'd have to check which version it is, online sources suggest there is a 53/39t and a 50/34t version - not sure you'd be interested in any.
Yep, definitely either a worn cassette or chainring. Probably the cassette in my own limited experience, but... maybe looking for signs of wear will provide some clues?
Mind = blown.