Peroxide-induced degradation, commonly termed ‘visbreaking’ or ‘controlled rheology’, is a widely applied technology to improve the flow properties of polypropylene (PP). This is used in industry to produce grades of different MFRs based on one reactor resin. For polyethylene, however, as peroxide induces crosslinking, such technology is rarely used. Current work investigates thermo-mechanical degradation of bimodal polyethylene in absence of peroxide. The structure and properties of the degraded polymers are presented.