Please verify your bicycle's make, model, year, or dimensions before ordering to ensure that this item is compatible with your bike. For Stels For Leopard For Guepard 600 650 800 850 ATV Quad Rectifier Voltage Regulator. Heat Dissipation:Advanced heat sink design enhances heat dissipation preventing overload and increasing load capacity. Plug and Play Installation:Designed For easy installation this voltage regulator is a true plug and play upgrade. If you have any difficulty shopping, you can contact us at any time. We will respond to you and provide a more perfect service. Let each buyer have pleasant purchases.