Well you learn something new... Was using Profile Racing ones on a BMX before that one, so fitted in same orientation (outside) and worked fine.
If you think about it, the surface on the inside is smooth, which mean that all the force will be pulling the chain tugs.
Hence why it should be mounted on the inside, while letting the track nuts (proper one) grip the track end.
@edscoble started
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Well you learn something new...
Was using Profile Racing ones on a BMX before that one, so fitted in same orientation (outside) and worked fine.