The Traxxas 4570 EZ-Start system is a complete starter kit designed for use with Pro.15 nitro engines, providing reliable and effortless engine ignition. This system simplifies starting by combining a high-torque motor with a convenient, easy-to-use interface, eliminating the need for pull-starts and reducing wear on your engine components. Built for durability and consistent performance, it ensures smooth and dependable starts for your nitro-powered Traxxas vehicles. Compatible with Traxxas models equipped with the Pro.15 nitro engine.