This is the kit for the Gen2. This is the genuine Yamaha and was super easy to install. The difference in the quality of the Side Arms, 2 and 3 in the Bill of Material from the standard ones was unbelievable. I should of weighed the parts but I bet the new ones were 4X the mass. They are worth every penny even though it was $400. By the way if you are thinking about the Corbin, you need to buy this first and then the Corbin mounts to this.