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Performa Racing's Radical Brushless Stock motors have set new benchmarks in electric motor performance and have quickly become the motor to beat for high-level Spec racing competition! Spec class drivers can now take advantage of technology from the World Championship-winning development team. The all-new Performa Radical Stock motors deliver improved throttle response, higher efficiency, and more speed. These new motors are a clear improvement in the Stock racing classes. Go with Performa Racing...more power and performance for your racing vehicles.