Choose from Arrma TYPHON Infraction Felony Kraton Notorious 6s Motor, ESC, Body, TX, RX, Body, Chassis Slider.

SPMXSM1700 6s BLX 4074 2050kV Brushless Motor:
Firma 4074 2050kV Brushless Motor
Black Aluminum can: 40mm diameter / 74mm length
Motor Shaft sticks out 22mm / 5mm
4 pole motor
Gold bullet connectors

NEW Arrma Heatsink Shroud w/ Cooling Fan fits Arrma Felony / Infraction Motor and others. Removed from a never-run new in box RTR Arrma Felony. What you see is what you get, no retail packaging.

Product 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

    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

Product Overview

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 — together, creating the best-performing RC system for your vehicle imaginable.

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
    6-channel DSMR / DSM2 receiver
    Full-range telemetry capabilities with Spektrum Firma Smart ESC
    Great for models that will benefit from AVC Technology that need additional channels for lights, shift servos and other accessories
    Steering priority puts the driver in complete control
    Fully adjustable-set the precise amount of AVC stability you want or turn off if desired
    Uniquely designed AVC technology for Stunts driving and Bashing
    Extra-long antenna suited for low to the ground vehicles and marine applications
    Water-resistant "Realkote" coating protects electronics from dust, debris and moisture
    Voltage sensor data port, voltage sensor included
    Works with any RC car, truck or marine models
    Compatible with all DSMR and DSM2 Surface transmitters

Fully Painted, decal'd and ready to mound with attached body pins.

****Lower 48 only for free shipping on the large chassis or bodies. Contact for shipping costs elsewhere. Thanks.