A parallel hybrid power train for a vehicle, comprising: an engine; an electric motor/generator; a transmission comprising: an input shaft split at a position along a length defining first and second shaft portions (102, 104), wherein the engine is coupled to an outer end of the first shaft portion and the electric motor/generator is coupled to an outer end of the second shaft portion, the engine and the electric motor/generator being coupled to opposite ends of the transmission input shaft; and at least a second shaft drivingly coupled to the input shaft, wherein the coupling between the input and second shaft is by way of gears, a first gear positioned on the input shaft, a second gear positioned on the second shaft and in selective engagement with the first gear, the second gear laterally movable along the second shaft and out of engagement with the first gear; a coupler positioned over an inner end of the first shaft portion and an inner end of the second shaft portion, such that the first shaft portion and the second shaft portion may be decoupled from each other by movement of the coupler during operation of the parallel hybrid power train; and a final drive assembly operably coupled to the engine and the electric motor/generator via the transmission, the final drive assembly being provided for driving ground engaging members of the vehicle. an engine; an electric motor/generator; a transmission comprising: an input shaft split at a position along a length defining first and second shaft portions (102, 104), wherein the engine is coupled to an outer end of the first shaft portion and the electric motor/generator is coupled to an outer end of the second shaft portion, the engine and the electric motor/generator being coupled to opposite ends of the transmission input shaft; and at least a second shaft drivingly coupled to the input shaft, wherein the coupling between the input and second shaft is by way of gears, a first gear positioned on the input shaft, a second gear positioned on the second shaft and in selective engagement with the first gear, the second gear laterally movable along the second shaft and out of engagement with the first gear; an input shaft split at a position along a length defining first and second shaft portions (102, 104), wherein the engine is coupled to an outer end of the first shaft portion and the electric motor/generator is coupled to an outer end of the second shaft portion, the engine and the electric motor/generator being coupled to opposite ends of the transmission input shaft; and at least a second shaft drivingly coupled to the input shaft, wherein the coupling between the input and second shaft is by way of gears, a first gear positioned on the input shaft, a second gear positioned on the second shaft and in selective engagement with the first gear, the second gear laterally movable along the second shaft and out of engagement with the first gear; a coupler positioned over an inner end of the first shaft portion and an inner end of the second shaft portion, such that the first shaft portion and the second shaft portion may be decoupled from each other by movement of the coupler during operation of the parallel hybrid power train; and a final drive assembly operably coupled to the engine and the electric motor/generator via the transmission, the final drive assembly being provided for driving ground engaging members of the vehicle.