When the 5HP Brigss & Stratton Flathead engine was at its peak in the Kart Racing industry and Engine Builders were pushing it to its limits one very valuable item was needed, Billet Lifters. In Racing we push the engines are far as they can go and then somehow find new ways to get more performance. Why do we do this? To out Race the other guy. Billet Lifters became a necessity in both Stock and Modified Flathead Classes due to the aggressive nature of the fast ramp Camshafts. The DynoCams Billet Lifters will hold up when other billet lifters are just not stong enough. Available in Extended and Stock Length.