This is DRK 160 RS Edition for NPRC RC Drag Racing. Proprietary 7-Stage launch power control software. All new profiles designed for NPRC Real Street Class. Factory pre-soldered 10AWG wires with DRK Super Capacitor module. Fanless design (You do not need to install the cooling fan). DRK 160 RS Edition ESC x1 20cm receiver cable (MCL4243) x1 ESC power switch (MCL4242) x1 USB data cable (MCL4054) x1 Maclan decal x1 IMPORTANT Tips: DRK 160 RS Edition ESC preset profiles are based on 20-degree motor can timing. For best results, set motor can timing to 20 degrees or lower. When installing your new DRK ESC, please set the radio to factory settings, or use a new, unused model. Using “radio tricks” for throttle manipulation is unnecessary and could cause problems with the ESC, resulting in poor performance, or a damaged ESC. The DRK ESC is designed to replace all other methods of manipulating the throttle. If the ESC was able to power on, calibrate, and run a motor, it is free of manufacturing defects. Tire burnout is controlled by the racer. It can damage the ESC. Due to the nature of the drag race application, Maclan Racing guarantees free of manufacturing defects. Any damage during a race is not a manufacturing defect.