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Hobbywing Xerun XR8 Pro G3 1/8 Competition Sensored Brushless Electronic Speed Controller. Loaded with cutting-edge technologies and features, this 1/8 competition ESC is designed to provide a higher level of performance and reliability for all competitive racers looking for the ultimate smooth control and supreme power you'd come to expect from Hobbywing! When combining this ESC with an optional 4268/4274 G3 motor, the maximum speed can be promoted by 50%. For added protection, this ESC is equipped with advanced thermal protection and reverse polarity protection. These advancements allow for an ESC that is designed to outperform the competition