You will now be able to seal your victory backs with the Nagys Customs Toppers for victory motorcycles. The were made from using stock bags. While we do out best to give the best possible fitment by using CAD from a stock bag and CNC molds some trimming and filling gaps maybe required. You will need to trim out 4 spots for the grooves using stock bags. these will work in after market bags but will not have an exact fit. However a majority of the fiberglass work would be done for you. comes with self adhesive carpet to give a nice clean look after installation.