Skip to main content
Firma 120A Black Edition Brushless Smart ESC, 3S-4S

Firma 120A Black Edition Brushless Smart ESC, 3S-4S


  • Brand:Spektrum
  • Product Code:SPMXSE2120
  • Availability:Availability on request

Prices are intentionally not displayed on the site. Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
Quote quantity Choose the requested quantity, select options/variants if available, and add the item to one combined quote request.

These selections are sent with the SKU, model and quantity so we can check fit and availability.

Why choose Firma 120A Black Edition Brushless Smart ESC, 3S-4S through RC-MODEL?

Firma 120A Black Edition Brushless Smart ESC, 3S-4S is an RC product from Spektrum. This page focuses on what an end customer needs: fit, use cases, specifications and imagery, without prices or outbound supplier detours.

Fit and use

Firma 120A Black Edition Brushless Smart ESC, 3S-4S fits customers looking for Spektrum items in Spektrum Catalog, Spektrum ESCs, Spektrum Surface Electronics, with RC-MODEL support for choosing the right configuration.

  • Relevant category: Spektrum Catalog, Spektrum ESCs, Spektrum Surface Electronics
  • Product identification for inquiry: model SPMXSE2120 / SKU SPMXSE2120

Key details

  • Input Voltage: 11.1V to 14.8V (3S - 4S LiPo, 8-12 cell NiMH)
  • Spektrum Category: Cars & Trucks / Parts, Electronics & Accessories / Electronic Speed Controls
  • Product Family: Spektrum ESC and speed-control range
  • BEC Voltage: 6 and 7V selectable
  • Motor Output Lead: 4mm
  • Product Height: 1.33" (34 mm)

Before ordering

  • Confirm dimensions, power system, radio compatibility or material size before purchase.
  • Ask us to match required accessories, adhesives, hardware, batteries or replacement parts.
  • RC-MODEL helps with fit checks, availability, compatible accessories and a formal quote in Israel.

Firma 120A Black Edition Brushless Smart ESC, 3S-4S is a Spektrum product intended for surface RC vehicles, crawlers, bashers and race setups that need dependable Spektrum control electronics. This page presents the practical buying information a customer needs before ordering: fit, SKU, image, category, specifications and usage advantages.

The content is written for purchasing through RC-MODEL, without supplier prices or links to competing stores.

Key Advantages

  • Organized under the Spektrum ESC and speed-control range.
  • Intended for surface RC vehicles, crawlers, bashers and race setups that need dependable Spektrum control electronics.
  • Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering.
  • Includes local product imagery and structured specifications for easier comparison inside RC-MODEL.
  • Spektrum Smart compatibility is highlighted where relevant for batteries, chargers, ESCs or telemetry-aware systems.

Core Specifications

  • Manufacturer: Spektrum
  • Brand: Spektrum
  • Product Code: SPMXSE2120
  • Product Family: Spektrum ESC and speed-control range
  • Application: Surface
  • Compatibility Focus: Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering.
  • Spektrum Category: Cars & Trucks / Parts, Electronics & Accessories / Electronic Speed Controls
  • Input Voltage: 11.1V to 14.8V (3S - 4S LiPo, 8-12 cell NiMH)
  • Amperage: 120A or larger
  • Auto Cutoff: Yes
  • Battery Input Lead: IC5
  • BEC: Yes
  • BEC Continuous Current: 4
  • BEC Voltage: 6 and 7V selectable
Relevant RC Academy guides

Learn before you buy

These guides explain the setup, safety checks and accessory choices that usually matter for this product type.

Technical Specifications
Manufacturer Spektrum
Brand Spektrum
Product Code SPMXSE2120
Spektrum Category Cars & Trucks / Parts, Electronics & Accessories / Electronic Speed Controls
Connector Type IC5, 4mm Bullet
Product Family Spektrum ESC and speed-control range
Application Surface
Compatibility Focus Check compatibility with Spektrum Smart equipment and the exact model requirements before ordering.
Auto Cutoff Yes
BEC Yes
BEC Voltage 6 and 7V selectable
Brakes Yes
Input Voltage 11.1V to 14.8V (3S - 4S LiPo, 8-12 cell NiMH)
Maximum Continuous Current 120A
Motor Output Lead 4mm
Product Height 1.33" (34 mm)
Product Length 1.7" (43 mm)
Product Weight 5.4 oz (153g)
Product Width 1.53" (39 mm)
Programmable Yes
Reverse Yes
Technology Smart
Amperage 120A or larger
BEC Continuous Current 4
Low-Voltage Cutoff Programmable Yes
Output Connector 4mm Bullet
Overload Protection Yes
Water-Resistant Yes
Product Application Surface
ESC Type Brushless
Drive Type Forward/Brake/Reverse
Maximum Burst Current 830A
Max Input Voltage 14.8V
Battery Input Lead IC5
Programming Options Button, Programming Box, Smartlink App, On Screen Text Gen
Time Delay Brake Yes

Tags: Spektrum, SPMXSE2120, Spektrum ESC and speed-control range, Spektrum Catalog, Spektrum Smart Technology, Spektrum ESCs, Spektrum Surface Electronics, RC-MODEL