"The fuel tank has a volume part located under the rider's seat just like on racing bikes to centralise the masses for the benefit of the overall balance of the vehicle. The new shape also improves the 'hanging off' riding manoeuvre - i.e. when you're all the way off the bike in the middle of the corner - by allowing the rider to lean out of the bike naturally when leaning over and provides a firm grip for the outside leg, as well as increasing capacity by 1 litre to a total of 17 litres"