This master thesis was performed in collaboration with Öhlins Racing AB, a company that develops advanced suspension technologies for automotive and motorcycle applications, mostly within the motorsport sector. Shock absorbers, which highly influence the vehicle behaviour and thus the global performances of the vehicle, are all the more important for off-road applications. In the past years, Öhlins Racing mostly focused on on-track applications for its automotive sector, but it recently showed its will to be a powerhouse in the off- road sector. The request from Öhlins Racing was to investigate and optimise the performances of off-road vehicle dampers. This research project started by looking into the modelling of off-road tracks and the modelling of dampers.