Originally Posted by
JohnDThompson
If you are using the original threaded freewheel hub, splined cogs will not work. Also, be aware that 13T is about the smallest threaded cog that will fit on a freewheel hub.
A 12T will fit, but you won't be able to use a BB lockring, and in fact you won't be able to use a BB lockring with anything smaller than a 14T.
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