This is a special product for the GSX-S. It's a rack that replaces the rear seat. You can stably install a box on the rear seat. You can load items like a carrier without worrying about the weight limit. With a rear carrier, the maximum load is probably 5 kg, including the box weight. It also sways up and down while riding, which can be unstable. Since this is in the rear seat position, it can probably handle several dozen kilograms. It seems to be quite sturdy. The visibility of the stop lamp and turn signals is also good. Above all, it's stylish. Touring bags can also be loaded stably. I think you can use it in various ways depending on your ingenuity. There are some scratches, but this is an expensive product, and it's rarely listed for sale, so it's for those who need it. I'm selling it because I'm changing vehicles. Hepco Becker carbon fiber-style black carrier, bolt-on, provides stability with cushioned mounts. - Brand: Hepco Becker - Color: Black - Material: Carbon fiber style - Mounting method: Bolt-on - Features: Cushioned mounts Thank you for looking.