NOVELTY - The method involves extruding a web-like reinforcement (2) with reinforcing fibers into a base polymer matrix (7). The reinforcement is provided with stabilizing fibers along with the reinforcing fibers to increase stiffness of the reinforcement, where the stabilizing fibers are made from a material different from the reinforcing fibers. The reinforcement containing the reinforcing and the stabilizing fibers is introduced into the matrix. The reinforcement fibers are arranged in extrusion direction (x), and the stabilization fibers are aligned transverse to the extrusion direction.    USE - Method for manufacturing a fiber reinforced extrusion profile e.g. open or closed hollow section. Uses include but are not limited to a structure component e.g. vehicle body, trailer, door system, of a passenger car and a lorry, a refrigerator frame, an air conditioning apparatus frame, a construction region e.g. window section, post profile and sewer pipe system, a skylight, a smoke and heat exhausting system, a greenhouse, frame systems for shower cubicle, frame system for solar cell system, shelf system for airplane and ship structure.    ADVANTAGE - The reinforcement containing reinforcing fibers and the stabilizing fibers is introduced into the base polymer matrix so as to increase dimensional stability and increase stiffness of the reinforcement, so that the extrusion profile can be manufactured in a simple manner, and high- strength profile geometries can be enabled.    DETAILED DESCRIPTION - The reinforcement comprises fabric, braided fabric, knitted fabrics, unidirectional fabrics and roving fabrics. The reinforcement fibers comprise mineral fibers e.g. glass fibers, carbon fibers, aramid fibers basalt fibers. The stabilization fibers comprise metal fibers and plastic fibers.    DESCRIPTION OF DRAWING(S) - The drawing shows a side perspective view of device for manufacturing a fiber reinforced extrusion profile.    Extrusion direction (x)    Fiber reinforced extrusion profile (1)    Web-like reinforcement (2)    Heat radiators (4)    Base polymer matrix (7)