Model Compatibility: Compatible with YZFR1 motorcycles manufactured from 2002 through 2012 as a direct replacement for the voltage regulator rectifier. Functionality: Restores voltage regulation and AC-to-DC conversion functionality required for proper electrical system on compatible YZFR1 models. Application Scope: Designed specifically for sport bike applications matching the YZFR1 2002–2012 model years and no other vehicle types or configurations. Electrical Specification: Matches the voltage regulation and rectification specifications of the installed on YZFR1 2002–2012 motorcycles. Installation Purpose: Serves as a functional replacement part to maintain factory-correct electrical system behavior when the regulator rectifier is faulty or worn.