It helps to dissipate excess voltage, improve the charging capacity, and prevent the battery from overcharging. If the motorcycle engine does not go through the rectifier, the voltage will fluctuate greatly as the engine speed decreases. It is easy to damage electrical appliances. If the rectifier is broken, the battery cannot be charged naturally. The rectifier is , some have no voltage output (mostly), and some have an extremely high output voltage! Compatible models: For Ducati 54040301B For Ducati Monster 1200R 2016-2017 For Ducati 899 Panigale 2014-2015 For Ducati 959 Panigale 2016 For Ducati 959 Panigale Corse 2018 For Ducati 959 Panigale ABS 2017-2018 For Ducati 1199 Panigale 2012-2014 For Ducati 1199 Panigale R 2014-2016 For Ducati 1199 Panigale S 2012-2014 For Ducati 1299 Panigale 2015-2016 For Ducati 1299 Panigale S 2015-2016 For Ducati 1299 Panigale S ABS 2017 For Ducati 1299 Panigale Final Edition 2018 For Ducati XDiavel 2016-2019 For Ducati XDiavel S 2016-2019 For Ducati Diavel 2014-2017 For Ducati Diavel Strada 2013 For Ducati Diavel Carbon 2013-2017 For Ducati Diavel FL 2017 For Ducati Diavel Carbon FL 2017 For Ducati Diavel FL 1200 2018 For Ducati Diavel Carbon FL 1200 2018 For Ducati Diavel 1200 Diesel 2017 Color: As Shown Material: ABS+Metal Package Contents: 1 x Motorcycle Rectifier Voltage Regulator