This Sportster Frisco mount gas tank is a very cool motorcycle part and will sit up higher on your backbone than the standard tank. This is the narrow width version and holds 2.1 gallons of fuel, versus the 2.5 gallons the standard width, stock Harley-Davidson Sportster gas tank. Heavy gauge steel and feature an offset gas filler bung that accepts a bayonet (a.k.a. cam style) Harley-Davidson type gas cap. These tanks feature a single 1/4 inch NPT petcock fitting at the lowest point of the tank for maximum miles on the road.