They have extended the Original style Peanut style gas tank to give it a sleeker look and add some fuel capacity. This large capacity tank holds 3.25 gallon (12,2L.) fuel, and is designed to maintain the classic "Peanut" profile. It still looks like an integral part of the motorcycle and not just like an over-sized bolt-on accessory. Both tanks take Screw-In type caps (style B) and have the fuel valve bung on the left.