The new PVP kart have now two aluminum radiator one behind the driver and one in the side pod, together the cooling area is 52% bigger than the old one, and both the radiator is now the same type. The expansion tank is replaced by a pressure cap on the tube from the motor to the rear radiator, it is also make it possible to fill water on the system without removing the wing.

Link to radiator kit for your own PVP kart. Kit with 2 Radiator, Kit with only 1 side radiator.