Parts/Electric power/ESCs/Spektrum RC Firma 45 Smart Lite Sensorless Brushless ESC (2S)
Spektrum RC Firma 45 Smart Lite Sensorless Brushless ESC (2S)
Spektrum RC

Spektrum RC Firma 45 Smart Lite Sensorless Brushless ESC (2S)

Part # SPMX-11063.0(1)
Where to buy
$69.99
AMain Hobbies
Seen Oct 12, 2026
$69.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

ESC Overview:

Unleash next-level control with the Spektrum Firma 45 Smart Lite ESC, a compact, waterproof powerhouse that delivers real-time telemetry, smooth brushless performance, and Smart technology simplicity, all in one package.

About the Firma 45 Smart Lite Brushless ESC


Smart, Compact Power

The Spektrum Firma 45 Smart Lite Brushless ESC delivers smooth, reliable performance in a compact and waterproof design. Powered by a fast 32-bit ARM M4 processor, it ensures precise throttle control and explosive acceleration, making it ideal for Losi 22S Sprint cars and similar 2S LiPo setups. Its rugged plastic case, aluminum heat sink, and high heat-resistant IC™ connectors ensure durability and efficient cooling, even in the harshest off-road conditions.

Telemetry Made Easy

With Spektrum Smart Technology, this ESC provides real-time telemetry to your transmitter via a simple one-wire connection, no extra modules or sensors needed. You'll get instant access to vital data like battery voltage, ESC temperature, and throttle input. It also features multiple programming options, adjustable BEC, and multi-point protection, offering advanced tuning and peace of mind in every race.

Features:

  • Sends real-time telemetry to your transmitter
  • Fully waterproof for all-weather driving
  • Simple programming with button, box, or USB
  • No soldering needed, plug and play
  • Built-in protections for heat, current, and voltage
  • High-power adjustable BEC (6V or 7.4V at 4A)
  • Compact design fits most vehicles easily
  • Fast 32-bit processor for smooth, powerful control
  • Overload & low-voltage cutoff protection

Includes:

  • (1) Spektrum™ Firma™ Smart ESC
  • (1) Decal Sheet
  • (1) Manual

Specifications:

Type Sensorless Brushless
Continuous Current 45A
Burst Current 180A
Input Voltage 2S LiPo
BEC Voltage 6V/7.4V @4A
Dimensions 1.33x0.94x0.55in (34x24x14mm)
Weight -
Connector Type IC5
Motor Connector 4mm Bullet
CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

Reviews3.0 · 1 review

Roger WatkinsVerified owneron Spektrum RC Firma 45 Smart Lite Sensorless Brushless ESC (2S)

Works fine for car that’s installed in just wish you could replace the switch instead of having to buy new esc

Builds using this part

No builds use this part yet — add it to yours from the build editor.