Thank you for viewing. This is a helmet hook (helmet lock) for the HAYABUSA. It is our original product. We have confirmed that it can be installed on the 2nd and 3rd generation models. *Please note that this product does not fit the small D-ring of the GT-Air.* The SET you will receive is shown in the last image. It includes a plate, spacer, bolt, and flat washer. All materials are stainless steel. A lock is included for a limited time. Please refer to the images for the installation location. Remove the original bolt, and then install in the following order: vehicle, spacer, plate, flat washer, and bolt. The original helmet holder is located under the tandem seat and is not very convenient. (In my opinion.) Sometimes you can't remove the tandem seat due to a seat bag or luggage, and I was having trouble finding a place to put my helmet when I left the bike. It's easy to use: just put the helmet's D-ring into the hook (plate). If you are leaving your bike, you can use the included lock for peace of mind. Alternatively, you can use a commercially available lock. Please use the lock of your choice. (Please judge for yourself as some locks may not be compatible) If you purchase two of these products, you can hang helmets on both sides. Please note that the included lock may be changed without notice. Manufacturer...Suzuki Type of parts...Helmet holder Vehicle type...GSX Model...GSX1300R HAYABUSA