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That's for shifting. Find the next ramp (the depression stamped by the tooth) and look at its tooth. Or find a photo of a brand new one.
this is what I was trying to explain. to add more detail back in the early 90s shifting was unreliable to improve shifting they invented the teeth to help each other as you moved up the cassette.
some further reading. https://en.wikipedia.org/wiki/Hyperglide
08-06-19, 07:46 AM
