Model Compatibility: Fits motorcycle models specified in the title including 1098, 1198, 1199, S, R, SP, Biposto, Monoposto, and Corse variants. Functionality: Serves as a voltage regulator rectifier replacement to restore electrical system function for and power conversion. Application Scope: Designed for use with the motorcycle models and configurations explicitly listed in the product title. Component Type: Functions as a current rectifier and voltage regulator, matching the operational role of the unit. Installation Purpose: Provides direct functional replacement for the voltage regulator rectifier on compatible models without modification.