They're ~50oz. When I got mine, it was weighed with no suspension nor ridgeline at 49.5oz including the stuff sack. If you're counting grams, there's probably a SLIGHT difference (mine has the stretch side mod vs. the side pullouts on this model), but not very likely much.
Then again, if you're a gram counter you're probably looking at the wrong hammock for backpacking.
If most of your camping is done within a mile or two of your ride, I personally wouldn't have a problem with carrying this one.
EDIT: These are slightly shorter than my Gen1 JBD Hammock, so it's likely slightly lighter.