Firma 3900Kv 4-Pole Brushless Motor
Firma 3900Kv 4-Pole Brushless Motor
Firma 3900Kv 4-Pole Brushless Motor
Firma 3900Kv 4-Pole Brushless Motor
Firma 3900Kv 4-Pole Brushless Motor
Firma 3900Kv 4-Pole Brushless Motor
In Stock

Firma 3900Kv 4-Pole Brushless Motor

Item No.
Spektrum Accessories - SPMXSM3300
2.7
$49.99
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This product may require additional items in order to work out of the box. See below for required items that may be needed to complete.
Speed Controls

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Firma 130A Brushless Smart ESC, 2S-4S
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In Stock
$139.99
0 of 1 Selected
Product $49.99
Add Ons
Estimated Total: $49.99
Estimated Total: $49.99
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Overview

Great choice for 1/10 Scale 4WD models looking for a high RPM motor upgrade running up to 3S * (12.6v) power. Low cog 4-pole rotor design, CNC machined aluminum housing, insulated high purity copper windings, high-quality alloy steel 5mm output shaft, and high-precision bearings for high durability and smooth rotation. Preinstalled with 4mm gold plated bullet connectors for easy installation. Perfectly matched for the Firma 130 Smart ESC.

*Will work with the 85A Firma ESC, but only for 2S power.

Features

  • Perfect upgrade for brushed 540- and 550-size brushed motors with the same diameter and mounting pattern (vehicle must accept pinions with a 5mm bore)
  • High-quality 4-pole sintered rotors
  • Includes 4mm gold plated bullet connectors
  • Precision ball bearings and hardened steel 5mm shaft
  • SafeD-5 Pinion compatible

Product Specs

Application
1/10 Scale Surface
Connector Type
4mm Bullet
Constant Wattage
500-749W
Input Voltage
2-3S/12.6V
Integrated ESC
No
Kv Rating
3000Kv or more
Maximum Continuous Current
45A
Motor Class
1/10 Scale
Motor Output Lead
4mm
Motor Type
Brushless
Outer Diameter
1.4" (36 mm)
Product Length
2.35" (60 mm)
RPM/Volt (Kv)
3900Kv
Sensor Type
Sensorless
Shaft Diameter
0.2" (5 mm)

Compatibility

No results for your given fitment filters

Product Details

icon-box
In The Box
  • (1) Spektrum Firma 3660-3900kv Sensorless 1/10 Brushless Motor with 4mm Gold Plated Bullet Connectors
  • (1) Product Manual
icon-how-to
Needed to Complete
  • Electronic Speed Control such as the Firma 130 Smart ESC
Firma 3900Kv 4-Pole Brushless Motor