A transmission system for a work vehicle, comprising a transmission comprising: a first shaft; a second shaft; an input shaft an output shaft; an input gear pair comprising a first input gear and a second input gear; a first input clutch configured to selectively couple the input shaft to the first shaft; a second input clutch configured to selectively couple the input shaft to the second shaft via the input gear pair; an output gear pair comprising a first output gear and a second output gear, wherein the first output gear is coupled to the first shaft, or the second output gear is coupled to the output shaft; a first output clutch configured to selectively couple the second output gear to the output shaft if the first output gear is coupled to the first shaft, or to selectively couple the first output gear to the first shaft if the second output gear is coupled to the output shaft; a second output clutch configured to selectively couple the second shaft to the output shaft; a first module, wherein the first module comprises: a first module gear pair comprising a first module gear and a second module gear, wherein the first module gear is coupled to the first shaft, or the second module gear is coupled to the second shaft; characterised by further comprising a first module clutch configured to selectively couple the second module gear to the second shaft if the first module gear is coupled to the first shaft, or to selectively couple the first module gear to the first shaft if the second module gear is coupled to the second shaft. a first shaft; a second shaft; an input shaft an output shaft; an input gear pair comprising a first input gear and a second input gear; a first input clutch configured to selectively couple the input shaft to the first shaft; a second input clutch configured to selectively couple the input shaft to the second shaft via the input gear pair; an output gear pair comprising a first output gear and a second output gear, wherein the first output gear is coupled to the first shaft, or the second output gear is coupled to the output shaft; a first output clutch configured to selectively couple the second output gear to the output shaft if the first output gear is coupled to the first shaft, or to selectively couple the first output gear to the first shaft if the second output gear is coupled to the output shaft; a second output clutch configured to selectively couple the second shaft to the output shaft; a first module, wherein the first module comprises: a first module gear pair comprising a first module gear and a second module gear, wherein the first module gear is coupled to the first shaft, or the second module gear is coupled to the second shaft; characterised by further comprising a first module clutch configured to selectively couple the second module gear to the second shaft if the first module gear is coupled to the first shaft, or to selectively couple the first module gear to the first shaft if the second module gear is coupled to the second shaft. a first module gear pair comprising a first module gear and a second module gear, wherein the first module gear is coupled to the first shaft, or the second module gear is coupled to the second shaft; characterised by further comprising a first module clutch configured to selectively couple the second module gear to the second shaft if the first module gear is coupled to the first shaft, or to selectively couple the first module gear to the first shaft if the second module gear is coupled to the second shaft.