Moto Iron 2.2 Gal. Axed Gas TankMoto Iron 2. 2 Gal. Axed Gas Tank Compact and sleek, the classic axed tank has lines that can't be beat. 3. 1 gallon capacity Pressure tested Accepts bayonet style (cam lock) fuel cap; not included Threaded ports to accept either 3 8" petcock or 1 4" petcock Unused port will need to be plugged; plugs available separately Tongue type mounts 18" tab to tab, tank body 15 3 4" Though these tanks are pressure tested from the factory, pressure testing