Thanks. Got the 10T and 12T cog set from Olympic cycles for R290, and got a larger (34T from the original 32T) ethirteen chain ring (~R1000) to hopefully let me use more gears when communting and give me some more time before I have to replace again.
A little late to this thread, but my M7100 cassette also has those 2 cogs worn. Can I use these, even though it says M9100?
If I put a larger chain ring on, would I need a longer chain as well? Bike shop said the chain is still fine, doesn't need replacement, so I'd like to keep the current chain if I can.
