Novak 3647 Vulcan Spec Brushless Motor with 12.5mm Rotor, 17.5T FEATURES: Recommended for 2WD Buggy, Truck and Short Course Trucks, 4WD Buggy, 1/12 scale Pan Car, Formula 1, Dirt Oval, Road Oval, Spec Racing, Tour INCLUDES: Novak Vulcan Spec 17.5 Turn Brushless Sensored Motor with Sensor Wire REQUIRES: Compatible ESC such as the Novak #1755 Pulse, #1730 Impact, #1745 Havoc Pro SC w/X-Drive, #1748, 1749 GTB2 w/X-Drive, #1850, 1851 EDGE 2S