Dayco was the first to develop the raw edge sidewall construction V-Belt, which facilitated controlled slippage around pulleys.

The Dayco V-Belt delivers more flexibility, and increases airflow around the belt, so it runs cooler and lasts longer than competitors' V Belts. Three plies of neoprene impregnated fabric resist heat, oil, and grease, and a specially formulated treatment of the polyester cord provides strength, stability, and reliability.