Kelvin Hoeflers new Pro Speedrings by Ricta Wheel Dynamics. Speedrings are cored wheels designed for performance in the park or on the streets. Made with Rictas NRG Hi-Energy Formula. Speedrings come with a softer urethane center that creates a smoother ride at a rough spot without sacrificing speed or feel. Ricta Wheels: pro-tested & proven. Speed reinvented