This King Size Fat Bob tank holds 6 gallon (22,7L.) and fits the 4 Speed Big Twin frames thru 1984 (except Softail models). Made on all new Zodiac tooling and therefore exclusively available from Zodiac. This large capacity tank does not look bulky. We kept the contours of the stock tank so it remains an integral part of the motorcycle. It's large capacity offers the extra mileage to those who want to go the distance. Available for cam lock caps or late type Screw-In gas caps. Accept stock style dashes. Due to the slightly different contour with flexible tank-panel (not die-cast).