The original tanks are only 40l. The tank that BTR offers has a capacity of 130 l, which is the maximum allowed by the FIA. They are approved for 5 years + 2 years renewable, it is delivered with 2 immersed fuel pumps + filters and afuel regulator. Gasoline submerged pumps avoid vaporloc. Moreover, the assembly is very simple, because there are very few hoses to connect the tank and the engine. The BTR tanks are all equipped with an anti-deflation system which allows to work without any problem until the bottom of the tank.