Fiber composite components based on polyurethane, comprising one or more fiber layers each impregnated with polyurethane, wherein the polyurethane is obtainable from a reaction mixture consisting of A) one or more organic NCO prepolymers having an NCO content of 27% to 31% by weight and a monomer content of 35% to 55% by weight from the group consisting of reaction products of aliphatic, cycloaliphatic and/or aromatic di- and/or polyisocyanates and 5% to 7.5% by weight, based on component A), of condensation products which have ester groups, each have a number-average molecular weight of 650 to 3000 g/mol, an acid number of less than 5, a hydroxyl number of 28 to 112 and in each case a number-average functionality of 1.0 to 3.0, and are formed from one or more fatty acids having 10 to 30 carbon atoms, one or more low molecular weight aliphatic and/or aromatic di- and/or tricarboxylic acids each having number-average molecular weights of 50 to 500 g/mol and/or derivatives thereof and one or more mono- or polyhydric alcohols each having a number-average molecular weight up to 500 g/mol and each having a number-average functionality of 1.5 to 6, B) a component comprising one or more polyols each having a number-average molecular weight of 62 to 3000 g/mol and each having a number-average functionality of 1.8 to 6, C) two or more thermolatent catalysts and D) optionally additives, characterized in that component B) contains 2.5% to 3.5% by weight, based on component B), of internal mold release agent and the internal mold release agent is selected from the group consisting of condensation products which have ester groups, each have a number-average molecular weight of 650 to 3000 g/mol, an acid number of less than 5 and a hydroxyl number of 28 to 112 and each have a number-average functionality of 1.0 to 3.0, and are formed from one or more fatty acids having 10 to 30 carbon atoms, one or more low molecular weight aliphatic and/or aromatic di- and/or tricarboxylic acids each having a number-average molecular weight of 50 to 500 g/mol and/or derivatives thereof and one or more mono- or polyhydric alcohols each having a number-average molecular weight up to 500 g/mol and each having a number-average functionality of 1.5 to 6, wherein the total amount of the condensation products having ester groups used in the fiber composite component is 5% to 5.7% by weight and wherein the reaction mixture at 25°C has a viscosity directly after the mixing of 200 to 700 mPas (measured to DIN EN ISO 1342) and the ratio of the number of NCO groups of component A) to the number of OH groups of component B) is 1:1 to 1.15:1. A) one or more organic NCO prepolymers having an NCO content of 27% to 31% by weight and a monomer content of 35% to 55% by weight from the group consisting of reaction products of aliphatic, cycloaliphatic and/or aromatic di- and/or polyisocyanates and 5% to 7.5% by weight, based on component A), of condensation products which have ester groups, each have a number-average molecular weight of 650 to 3000 g/mol, an acid number of less than 5, a hydroxyl number of 28 to 112 and in each case a number-average functionality of 1.0 to 3.0, and are formed from one or more fatty acids having 10 to 30 carbon atoms, one or more low molecular weight aliphatic and/or aromatic di- and/or tricarboxylic acids each having number-average molecular weights of 50 to 500 g/mol and/or derivatives thereof and one or more mono- or polyhydric alcohols each having a number-average molecular weight up to 500 g/mol and each having a number-average functionality of 1.5 to 6, B) a component comprising one or more polyols each having a number-average molecular weight of 62 to 3000 g/mol and each having a number-average functionality of 1.8 to 6, C) two or more thermolatent catalysts and D) optionally additives,