Check the listing for details. Spektrum RC Firma 85 Amp Sensorless Brushless Smart ESC & Motor Combo (3300Kv). Condition: New. Listed at 104.99 USD. Spektrum Firma 85 Amp Sensorless Brushless Smart ESC & Motor Combo. Like every component in the Spektrum™ Smart ecosystem, Firma™ Smart ESCs combine "plug-and-play" simplicity with the ability to communicate with other Smart electronics. Firma Smart ESCs do much more than regulate power. They function like a virtual engineer inside your model, providing a direct path to the vital operating data you need to reach peak performance. Firma Smart ESCs give you an extra layer of confidence that your electronics are all operating at their best. With Firma Smart ESCs, you'll be better connected to your vehicle than ever before — without installing extra components that all work independently of each other. You won't need extra wires, modules, or links. A Firma electronic speed control provides a one-wire solution for obtaining telemetry data such as RPM, temperature, battery voltage and capacity. Firma ESCs not only gather the data but also send it to your transmitter in real time, instead of only storing it for after-run study. You're able to adjust settings as needed to boost performance on the go. The Firma Smart single-wire telemetry solution has been tested for quality and performance by the best brands in RC. Their verdict? Smart technology is both simpler and superior! Features: Smart all-in-one telemetry Fast, powerful 32-bit ARM M4 processor Waterproof Multiple options for easy programming: Button programming Smart ESC Programming Box SmartLink USB Updating and Programmer application Multi-point protection: Over-current protection Automatic LiPo low-voltage cutoff Thermal protection Failsafe protection Developed and designed by Spektrum™ engineers, in partnership with the industry's leading ESC manufacturer Hand-picked combo for 4WD 1/10th scale surface applications running on 3s Lipo setups Includes high performance and durability Spektrum Firma 3300kV Brushless motor High current adjustable BEC (6v or 7.4v @ 4 Amps) Compact for easy installation in most applications Ready to install — no soldering required Rugged plastic case with mounting tabs Aluminum heat sink for high efficiency Cooling fan Adjustable high-power BEC Firmware updatable through the Smart ESC Programming Box High heat-resistant IC™ connectors, backwards compatible with EC™ connectors Limited 1-year warranty Specifications: Adjustable Timing: No Auto Cutoff: Yes Battery Input Lead: 12AWG 5.1" (130mm) Battery Type: LiPo (3.7V per cell) BEC: Yes BEC Continuous Current: 4A BEC Maximum Burst Current: 8A BEC Type: Switch Mode BEC Voltage: 6V/7.4V Brakes: Yes Connector Type: IC3 Drive Type: Forward/Brake/Reverse Efficiency: 82% Forward: Yes Input Voltage: 2-3S LiPo, do not exceed 3S (11.1V) with thtis motor Low-Voltage Cutoff Programmable: Yes Maximum Burst Current: 550A Maximum Continuous Current: 33A Motor Connector: 4mm Bullet Motor Design: Inrunner Motor Output Lead: 12AWG 5.1 in (130mm) Motor Type: Brushless - Sensorless Number of Poles: 4 Outer Diameter: 1.41" (36 mm) Output: 430W(2S), 780W(3S) Product Height: 1.3" (33 mm) Product Length: 1.7" (43 mm) Product Weight: 0.255lbs (116g) Product Width: 2.1" (53 mm) Programmable: Yes Reverse: Yes RPM/Volt (Kv): 38,400 @ 12V Shaft Diameter: 0.125" (3 mm) Technology: Smart Time Delay Brake: Yes Water-Resistant: Yes Wire Gauge: 12 AWG Includes: (1) Spektrum™ Firma™ Smart ESC (1) Spektrum Smart sticker sheet (1) Product Manual Needed to Complete: Spektrum™ Surface Receiver Spektrum Smart Technology LiPo Battery Spektrum Transmitter About Us | View Store