Not sure about the ultra - but on my xcr (same engine) - there's the little foam thing - get that off. Then there's 4 bolts that hold the upper plenum on. Take that off and the the bottom airbox should just pull out. It's a bit of a [email protected] to get out - wiggle it a little. When you get it out you'll see why - the tight seals around the carbs and the little resting pod things.
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