i was hoping to keep the one on there
If those are the original rings, they probably won't work with 9/10-speed chain, because it is narrower between the plates than the 8-speed for which they were designed.
@gbj_tester started
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If those are the original rings, they probably won't work with 9/10-speed chain, because it is narrower between the plates than the 8-speed for which they were designed.