TrackStar performance now in comes in easy to select Combo package! Using a Fast Silicon Labs MCU and high quality On-Semiconductor MOSFETs the TrackStar 18A ESC sets a new standard in high quality yet affordable car ESCs. With Intelligent MCU logic the TrackStar series ESCs allow extremely precise start up control and positioning feed back from the motor. Combined with the quality 4 pole motor this translates in to very smooth start up and acceleration and torque. The Turnigy TrackStar 18A ESC also boasts a host of programing options not usually found in an ESC of this size and can be programmed with ease via the Turnigy TrackStar programing card (sold separately) ESC Specification: Cont. Current: 18A Burst Current: 25A Car Size: 1/18th Battery: 2-3 Cell Lipo / 4-9 Cell Ni-XX L-BEC: 5V / 1A Output Motor Type: Sensorless Brushless Size: 30 x 26.1 x 13.8mm Weight: 26g (Including wires) Motor Plugs: 3.5mm Bullet type Battery Plug: Required On/Off Switch: Yes Reverse: Yes Motor Specifications: Turns: 12T KV value: 5050KV Poles: 4 Diameter: 21.5mm Motor length: 37mm Extend shaft diameter: 2mm Length of extend shaft: 11±0.5mm Weight: 60g No loading @ 7.2V: 2.2A Max current: 34A Resistance (Ω): 0.027Ω Battery range: 2~3s 7.4v~11.1v Operation Temperature: 80° Max Temperature 130° Suitable car scale: 1/18 Suitable ESC: 25A Thickness of lamination: 0.2X20mm