‘17 lowers with boom II amp, speakers and bag harness. These appear to be for a water cooled engine. Looks like a slot for a radiator and hoses. I could be wrong. There is NO HARDWARE with these, no bolts, screws, or brackets. There is a little road rash on the bottom of the right lower. I bought them along with a bunch of other parts, and have no use for them. $400 paypal -shipped lower 48