Originally Posted by dustinlikewhat
while it is not a front hub, and I'm not sure you could space it properly to a track frame, you could get a single speed disc rear hub, then you could throw your cog on the disc side, and a freewheel on the other. although I'm not sure that there is any practical use for this...
That would be perfect for frames that are 135mm spacing. Pretty useless for anything else though.