The decision comes after team manager Bjarne Riis admitted last year that he used performance-enhancing drugs during his career, including when he won the 1996 Tour de France.
CSC spokesman, Henrik Bo Pedersen, said: “We will continue to support the team and exercise our sponsorship rights during the 2008 race season. At the same time, we are committed to helping the team secure a new title sponsor”.
CSC is the latest company to abandon cycling in the wake of a string of doping scandals. T-Mobile and Discovery Channel both ended their team sponsorship deals after a string of doping revelations.
