Update on the aftermarket skid plate sold by Kawasaki. I’m very pleased with this product looks to be about twice as thick as the original one. Easy installation ( less than 30 minutes) plus they included new mounting bolts. For a couple of hundred bucks it’s a nice upgrade.
Not sure of exact weight but would guess about 4lbs about twice the thickness of the original. I have installed a windshield which I built myself out of a sheet of polycarbonate, much cheaper. Not sure about tire size can’t help you there.