This is a replacement Bungee for the Urban Assault Bungee. If you are looking to buy the bungee for the first time go to Packages. The urban assault bungee is for Urban Snow and Skate boarders, who like to hit rails and get huge air. It only takes one person to stretch back this bungee and you still get up to 30 mph. Try this great bungee system out and ride the rails with speed never reached before. You won't ever have to build another drop in ramp.