The WaveCam is the cornerstone that spring torsion trucks were developed around. It's the easily replaceable wear part. Acting somewhat like an incline plane, the WaveCam translates the side to side force of longboard carving into up and down motion which can work with a single spring. Since the WaveCam eliminates the need for multiple resistance mechanisms (ie. two springs or two bushing halves) these spring torsion trucks can be made lower, lighter and maintained with fewer parts than many traditional longboard truck designs.