hard bags to good to be true - i dunno

Those are the Tsukayu Strong bags, going by the picture and the measurements. Great price also, the only thing that would concern me is that there is no mounting hardware . The ghost brackets mounting system moves the bags out about 2 inches from the fender and it's not as clean a look, IMHO. Tsukayu sends a specific set of mounting brackets tha keep the bags nice and tight to the bike. Probably the 120 dollar difference in the price. They aren't pre-drilled for a reason, gives each individual the oppertunity to mount them where he wants them. Look around on the site, you wouldn't want the same mount location on a C model as you would on an R or S. They are great bags and the flow they give the rear end is something no pair of Leatherlykes could ever do.