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In den letzten 10 Jahren wurde eine preisgünstige Herstellungsmethode für keramische SiCN-Fasern über die Precursorroute gefunden, welche die fünf Prozessschritte Polymersynthese, Herstellung der Spinnmasse, Schmelzspinnen, Härtung mittels Elektronenbestrahlung und kontinuierliche Pyrolyse bei 1100 C unter Stickstoffatmosphäre beinhaltet. An inexpensive method has been found to produce ceramic SiCN-fibres via the precursor route consisting of five processing steps: synthesis of the polymer, preparation of the spinning mass, melt-spinning, curing via electron beam and subsequent pyrolysis at 1100 C in a nitrogen atmosphere. A special solid and meltable fibre polymer, the so-called polycarbosilazane ABSE, has been developed in the last decade for this purpose. Due to its low molecular weight, an adequate catalytic and thermal aftertreatment was necessary to guarantee a stable melt-spinning process. This article discusses an alternative way to prepare a qualified spinning mass, i.e. the addition of Multi-Walled Carbon Nanotubes (MWCNTs) to the ABSE melt. For this purpose a homogeneous dispergation of the MWCNTs in the ABSE matrix is necessary. In this study, spinning masses were fabricated in different ways. By optical analysis and comparison of the level of dispergation in these spinning masses an optimized process for integration of the MWCNTs was identified. The influence of the addition of a dispersing agent is investigated as well. In using a dispersing agent, the level of homogeneous dispersion of the MWCNTs increases whereas the interactions between the particles and the precursor melt decrease. In first spinning experiments a good spinability of the masses were noticed. Thus the addition of MWCNTs represents a new way to modify the ABSE precursor for the melt-spinning process.