Today's alternators can no longer be viewed as stand-alone, passive components that are simply bolted on to the engines of old.  In fact, today's alternators have been brought to forefront of engine design as an integral part of each FEAD (Front End Accessory Drive) system.  Pulleys are no longer one-piece donuts that passively spin the alternator in tow. From this need, ZM developed Decoupler Pulleys.

In addition to the Pulleys line, ZM offers a complete line of Clutch Pulleys. These products are designed to supply the entire market, where the company figured out a business opportunity taking advantage of its long experience.