The Dynamite Tazer Twin 2-1 System combines the motor and ESC inside a single aluminum case specifically designed for the task. With the speed control and motor combined, we have been able to improve performance and reliability by making a simpler system, composed of fewer components and electrical connections. The Tazer Twin System is very easy to install and operate, making it the perfect upgrade for all 2WD brushed 1/10 scale vehicles. The unit is fully programmable and waterproof to keep the fun going in all environments.