Electrosport Industries Regulator/Rectifier ESR552 This is by far the best regulator rectifier in the world. The Electosport RR design prevents overcharging and dissipates voltage quickly while providing optimum power balance and protection to all of your electrical components. This aluminum die cast heat sink helps remove heat quickly and the slotted mounting holes provide easy installation. Electrosport offers a 1-year warranty Connector blocks are designed to fit perfectly into the OEM wiring harnesses