This Fits Traxxas 1/10 Wide-Maxx Velineon VXL-4s Brushless ESC &540XL Motor 89086-4 is the perfect addition to your RC model vehicle. It is compatible with a variety of vehicles, including cars, trucks, and motorcycles. The electronic speed controller is designed for use with brushless motors and is compatible with electric fuel. The model is a 1:10 scale and is suitable for use with a range of vehicles. It is a high-quality product that is sure to provide reliable performance. Whether you are a seasoned RC enthusiast or just starting out, this item is a great choice. (came from a new wide-maxx).