O.S Nitro Engines set the standard which all other manufacturers try to match. With over 70 years of engine expertise, O.S. knows how to stay in front of the competition. Each car, buggy and truck engine undergoes two years of testing and tuning for maximum power and durability.
Competitors come and go, but champions keep on winning. For rock-solid dependability and title-taking performance, there's only one choice in the long run: O.S.