What is a Mosfet regulator?

A MOSFET regulator is a type of voltage regulator used on powersport vehicle charging systems, including motorcycles, dirtbikes, ATVs, SxS/UTVs, snowmobiles, personal watercraft and more.  Since they are not yet commonly used as original equipment by manufacturers, they make an excellent charging system upgrade on many vehicles.  

A MOSFET regulator works in the same way as your standard voltage regulator found on most vehicles, however it uses much better electronic components to do the regulation. These components require more complex circuitry to control them, resulting in the price increase you generally see with MOSFET regulators. However, the premium is worth paying, as you noticeable increase accuracy in your voltage regulation, and they run significantly cooler than a standard regulator. This results in much improved stator and regulator reliability and increased battery life.  MOSFET regulators now often come in OEM style plug & play packages, making it easy to upgrade most vehicles.