Flying Piston - Alien, Axed Or Egg Small Custom Motorcycle Gastank Size: long 16, wide 9, high 8 inches, 2.0 gal Installed: HD style screw in cap reciever and a 22mm high flow petcock bung in order to fit the widest selection of aftermarket parts. For custom applications. Mounts via small tabs that stick out from the front and the back of the tank. This can be done as a "no weld" install but the best method is to weld anchor bungs into the frame. Our tanks come pressure tested and sprayed with a coat of varnish to inhibit rusting.