Anybody know how these differ from the standard Pit Bulls? Is it just a case of them having larger nose-bombs? Or is the frame itself different?

Only difference is larger nose bombs.

Cheers Oak!

Bumping this up, does anybody know if the nosebombs are interchangeable? The Asian fit ones are a lot better for me.

Yes, they are. They are the ones that are press-fit onto posts molded into the frame. Pull the old ones straight off and press the new ones on.

Sometimes the rubber will peel off the plastic substrate on the nosebomb... if that happens, the guy at HQ Warranty said to just use pliers to finish pulling them off.

Thanks Eddy!