Is this all i need to make it freewheel on the standard fixed/fixed rear rim?
By rear rim I assume you mean rear hub.
If it is a standard OTP Langster is should be a flip flop hub, but you say here it is fixed/fixed in which case the suggestion freewheel won't fit.
By rear rim I assume you mean rear hub.
If it is a standard OTP Langster is should be a flip flop hub, but you say here it is fixed/fixed in which case the suggestion freewheel won't fit.