The Firma 1900Kv brushless motor is a perfect option for 1/8 scale buggy, truggy or monster trucks with a 3S-6S LiPo powered setup. Featuring a low cog 4-pole 8-magnet rotor design, CNC machined aluminum housing, insulated high purity copper windings, high-quality alloy steel 4mm output shaft, and precision bearings for high durability and smooth rotation. Preinstalled with 4mm gold plated bullet connectors for easy installation, and perfectly matched for the Firma 130 Smart ESC.

  • Perfect upgrade for 1/8 scale racers and bashers
  • Safe-D Shaft provides a C-clip locking point to prevent pinion gear slip
  • High efficiency design
  • 6S LiPo power capable
  • High-quality 4-pole sintered rotor
  • 4mm gold plated bullet connectors
  • High-quality construction with precision ball bearings and hardened steel 4mm shaft



    • ApplicationUpgrade for 1/8 scale racers and bashers with 3-6S Lipo powered setup
    Bushing Or BearingBearing
    Connector Type4mm Bullet
    Efficiency86%
    Input Voltage11.1 - 22.2V
    Maximum Continuous Current60A
    Motor DesignInrunner
    Motor Size4274
    Motor TypeBrushless - Sensorless
    Number of Poles4
    Outer Diameter1.6 in (42 mm)
    Output4940W
    Product Length2.9" (74 mm)
    Product Weight14.67 oz (416 g)
    RPM/Volt (Kv)1900Kv
    Scale1/8
    Shaft Diameter0.157" (4 mm)
    Shaft Length0.73 in (18.5 mm)