Abstract: A gas kit for two wheelers comprising a main chamber having an inlet provided at one side thereof such that to be connected with a gas cylinder, a separator being disposed towards the inlet end of the said main chamber for constituting a gas chamber therein, a spring-loaded piston being disposed in said main chamber towards the other end thereof so as to constitute a pressurized gas chamber, an outlet being provided in said pressurized gas chamber such that to be connected with an spring actuated valve being provided for supplying the gas to the piston cylinder assembly and also to the carburetor of the engine of the vehicle.