Excellent option for entry-level racers Reedy's Blackbox 600Z-G2 Zero-Timing Competition ESC is an excellent option for entry-level racers thanks to its economical price, versatility, race-proven performance, and improved durability. Excellent throttle and brake feel, a wide range of adjustability, and upgraded hardware make the Blackbox 600Z-G2 suitable for a variety of racing applications, including entry level and cost-controlled "spec" race programs that mandate a specific ESC. When combined with Sonic 540-FT motors, the pairing also offers the perfect solution for clubs and tracks that are striving to improve entry-level participation or introduce cost-controlled classes for racers of all skill levels. Adjustable Settings: Operation Mode Select Forward/Brake (F/B) or Forward/Brake/Reverse (F/B/R) operation. Drag Brake Adjust automatic braking strength when the throttle trigger is returned to neutral. Power Profile Increase or decreases punch. Drive Frequency Adjust to create a smoother or more aggressive throttle feel. Brake Frequency Adjust to create a smoother or more aggressive brake feel. Restore Default Restore the factory default settings. Voltage Input: 2S LiPo On Resistance (ohms): 0.0018 Continuous Current (A): 60 Dimensions (mm): 40.2 x 31.0 x 18.8 Weight w/o Wires (g): 37 Motor Limit: 13.5T