ESR431 is is a superior replacement regulator/rectifier for the OEM unit on the CBR600F4i between 2001-2006. It incorporates the newest generation power circuits and our efficient heat sink that gets rid of the heat quickly.Output voltage going to the battery is super stable and thanks to the modern electronics the unit runs much cooler than the stock unit.ESR431 is a plug-in replacement regulator and comes with high quality connectors and leads for easy installation.Our ESR431 comes with a full one year warranty.

CBR600F4i (01-04)
CBR600F4i (05-06)