A tipper assembly comprising: a chassis having a first chassis linkage point ; a body pivotally attached to the chassis about a body pivot axis , the body being pivotable between a lowered position and a raised position; a tailgate moveable between a closed position in which the tailgate is arranged across an end opening of the body and an open position in which the tailgate is pivoted away from the end opening ; and a first tailgate lift assembly configured to lift the tailgate from the closed position to the open position on movement of the body from the lowered position to the raised position; wherein the first tailgate lift assembly comprises: a first arm having a tailgate end fixedly attached to the tailgate and a first arm linkage point , the first arm being pivotally attached to the body about an arm pivot axis , the arm pivot axis being arranged between the tailgate end and the first arm linkage point ; and a first linkage assembly connecting the first arm linkage point to the first chassis linkage point , the first linkage assembly comprising an arm link characterised in that the first linkage assembly further comprises a rapid opening assembly, the rapid opening assembly having a first end attached to the body or the chassis and a second end attached to an intermediate portion of the arm link ; wherein the rapid opening assembly is configured to create a v-shape in the arm link , drawing the first arm linkage point closer to the first chassis linkage point on rotation of the body about the body pivot axis from the lowered to the raised position. a chassis having a first chassis linkage point ; a body pivotally attached to the chassis about a body pivot axis , the body being pivotable between a lowered position and a raised position; a tailgate moveable between a closed position in which the tailgate is arranged across an end opening of the body and an open position in which the tailgate is pivoted away from the end opening ; and a first tailgate lift assembly configured to lift the tailgate from the closed position to the open position on movement of the body from the lowered position to the raised position; wherein the first tailgate lift assembly comprises: a first arm having a tailgate end fixedly attached to the tailgate and a first arm linkage point , the first arm being pivotally attached to the body about an arm pivot axis , the arm pivot axis being arranged between the tailgate end and the first arm linkage point ; and a first linkage assembly connecting the first arm linkage point to the first chassis linkage point , the first linkage assembly a first arm having a tailgate end fixedly attached to the tailgate and a first arm linkage point , the first arm being pivotally attached to the body about an arm pivot axis , the arm pivot axis being arranged between the tailgate end and the first arm linkage point ; and a first linkage assembly connecting the first arm linkage point to the first chassis linkage point , the first linkage assembly comprising an arm link characterised in that the first linkage assembly further comprises a rapid opening assembly, the rapid opening assembly having a first end attached to the body or the chassis and a second end attached to an intermediate portion of the arm link ; wherein the rapid opening assembly is configured to create a v-shape in the arm link , drawing the first arm linkage point closer to the first chassis linkage point on rotation of the body about the body pivot axis from the lowered to the raised position. <EOS>