Valve assembly for an injection valve and injection valve

Valve assembly (14) of an injection valve (10), the valve assembly (14) comprising a valve body (20) including a central longitudinal axis (A), the valve body (20) comprising a cavity (24) with a fluid outlet portion (28), a valve needle (22) axially movable in the cavity (24), the valve needle (22) preventing a fluid flow through the fluid outlet portion (28) in a closing position and releasing the fluid flow through the fluid outlet portion (28) in further positions. The valve needle (22) has a guide portion (40) being designed to guide the valve needle (22) in the valve body (20), a tip portion (50) being designed to act together with the valve body (20) to prevent the fluid flow through the fluid outlet portion (28), and a lower needle portion (42) being arranged axially between the guide portion (40) and the tip portion (50). The lower needle portion (42) comprises a recess (44). The recess (44) enables a fluid flow to the fluid outlet portion (28). A flow resistance element (52) is arranged in the recess (44) radially between the lower needle portion (42) and the valve body (20). The flow resistance element (52) is shaped in a manner that at least in an axial portion of the recess (44) the recess (44) has a cross-section area with a given axially asymmetric shape.