Features: 1.Compatibility: Voltage regulator rectifier is fit for FMX650 2005?2006, which is made according to the prototype model. 2.OE Number: Voltage regulator replace part number is 31600 MFC 641. Please make sure the OE number matches the part you are replacing. 3.Function: Improve engine power and provide stable voltage, directly improve the performance of low speed torsion of vehicles, enhance engine power. 4.Performance: Voltage regulator rectifier can improve ignition efficiency, making fuel combustion more adequate, improve fuel efficiency, and reduce the use of vehicle fuel consumption. 5.Excellent Features: Aluminium alloy material, strong anti vibration and anti interference ability, shockproof and waterproof. Specification: Item Type: Voltage Regulator Rectifier Material: Aluminium alloy Voltage: 12V OE: 31600 MFC 641 Application: The aftermarket replacement parts for retrofitting old voltage regulators that meet or will exceed OEM standards, direct replacement, easy installation Rectifier Function: The rectifier uses the semiconductor diode to conduct current, so as to rectify and control the power supply, provide stable voltage for the battery, and improve the ignition efficiency of the engine. Applicable Models: Fit for FMX650 2005?2006 Note: 1.Please double check the part number of your item, matching information is for reference only. 2.If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!