It's the inner ring that pushes against the dropout and it has locking grooves on the back.
Uhm, I was wrong about the grooves.
It's a nut for the rear hub.
I guess a thicker spacer with the same diam as the nut would suffice then.
@Thrust started
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It's the inner ring that pushes against the dropout and it has locking grooves on the back.
Uhm, I was wrong about the grooves.
It's a nut for the rear hub.
I guess a thicker spacer with the same diam as the nut would suffice then.