Looking at it, it seems like Chromia might be a new mold with a really similar transformation to PRiDE Arcee.
I don't remember PRiDE Arcee having a waist joint (though I may be wrong), and the front part of her backpack looks quite different in terms of how it works.

Still kinda lazy, I'll pay, but it looks good and there's only so many ways you can do bikeformers.