Please note the following when purchasing a controller: 1. The image is for reference only; we will send the correct controller based on your bicycle model. 2. Please select the appropriate controller according to your bicycle model. 3. Some bicycle models have both front and rear controllers; The front controller is usually the battery base plate. 4. 6000W bicycles have only one controller. A single-motor bicycle also has only one controller. 5. After placing your order, it's best to send a photo of your controller's specifications to our official email address [email protected] (as shown below). You will need to open the controller's black casing to take the photo. A 6000W bicycle does not require sending parameter photos. 6. For E8 controller purchases: E8 bicycles purchased before March 2023 have a red plug on the controller power cord. E8 bicycles purchased after March 2023 have a yellow plug on the controller power cord.
