Item No NVK-1710 This Racing ESC is for Brush or Brushless Motors! GTB RACING ESC It's for racing. It's programmable. It can be used with either brushless or brushed motors. It's Novak's GTB Brushless/Brush Racing ESC, and like all of Novak's speed controls, the GTB is packed full of features. This versatile ESC has no brushed motor limit and is compatible with all Novak 540-size and 550-size sensored brushless motors. Programming the GTB is easy thanks to its user-friendly interface and 4 different color status LEDs. The brushless mode has 4 adjustable parameters, including Minimum Brake, Drag Brake, Deadband, and Minimum Drive. The brushed mode is fully programmable with all of the adjustments of the brushless mode, plus adjustable Drive Frequency. The GTB uses lightweight MOSFET technology. These MOSFETs have low 'RDS On' value, which allows the speed control to have high power density. This ESC also has the lowest On-Resistance for a speed control of its class, making it perfect for racing in sportsman class or other events where advanced timing is not needed. The GTB includes all of the extra performance-enhancing components needed for racing, including a factory-installed heat-sink and cooling fan. Other convenient features include One-Touch Set-Up, direct-solder wiring tabs, and a replaceable input and switch harness. It's also equipped with a water-resistant case. In addition, the GTB Brushless/Brush ESC includes Built-in Li-Po Cut-Off Circuitry, which monitors the vehicle'sLithium Polymer battery pack¡¦s voltage, and prevents the batteries from going below the critical safety voltage level. GTB ESC FEATURES Compatible with brushless and brushed motors. 5 brushless programmable throttle profiles (3 forward/brake; 2 w/reverse) 4 Adjustable Parameters in all profiles: Minimum Brake, Drag Brake, Deadband, and Minimum Drive Fully programmable racing brushed mode including adjustable Drive Frequency User-friendly programming interface with 4 different color status LEDs Built-in Li-Po Cut-Off Circuitry Protection (Can be activated in any of the 6 throttle profiles) One-Touch Set-Up (Still the easiest!) Microprocessor-controlled Gold-Plated PCB Direct-Solder Wiring Tabs User-replaceable input harness (#5320) and switch harness (#5602) Locked Rotor Protection Smart Braking II enables users to "shift" from forward to reverse (in profiles with reverse) Radio-Priority Circuitry Polar Drive Circuitry Clear cooling fan (30x30x8mm) (#5648) mounted on factory-installed heat sink Factory-installed power capacitor module (#5679) Water-resistant case GTB ESC SPECIFICATIONS Input Voltage: 2S (Li-Po) / 4-6 cells NiMH (1.2V/cell) Footprint: 1.16" x 1.49" (29.5 x 37.8 mm) Weight: 1.36 oz. (38.5 g) Motor Limit: Compatible with all Novak 540-size or 550-size brushless motors. No brushed motor limit On-Resistance: 0.00040 ohms* (per each phase -3); 0.00013 ohms* (brushed mode) Throttle Profiles: 5 brushless (2 with reverse), 1 brushed BEC: Heavy-duty 6V/3A Battery Plug: None Motor Plug: None Status LEDs: 4 Voltage Cut-Off: 6.25V (when Li-Pol Cut-Off Circuitry is enabled) Power Wires: 14-gauge *Mosfet rating at 25 degrees Celsius junction temperature