Originally Posted by jonwvara

You mean the screw-and-bushing assembly that's there to prevent the chain from getting stuck between the crankarm and the chainring if it somehow falls off to the outside? That's true enough. But I've never run anything but a pin-less 46 or 48 on the outside of my 93s, and haven't had a chain come off and get wedged yet. If one were really concerned about it, it would be easy enough to drill and tap such an inner-position chainring to accept a pin