Originally Posted by
CliffordK
While "Hyperglide" typically applies to cassettes, I think it can be applied to an indexed shifting technology as applied to freehubs too.
Yes. In the context of cassettes, the switch from Uniglide to Hyperglide involved a change in the design of the freehub body. But in terms of how Shimano uses the terminology, Uniglide versus Hyperglide primarily refers to how the cogs are profiled to facilitate smooth shifting. An MF-TZ20 six-speed freewheel is a hyperglide freewheel, for instance.