Spektrum RC Firma 3660 4-Pole Sensorless Brushless Motor (4000kV)

Motor Overview:

The Spektrum™ Firma 3660 4-Pole Sensorless Brushless Motor is a high-performance replacement motor designed for the Arrma® Vorteks 223S and Quake 223S DSC platforms. It’s also an excellent upgrade option for other platforms such as the Arrma Fury 223S or the Arrma Infraction BLX when running on 2-3S power. Built for strength, efficiency, and smooth operation, this brushless motor delivers reliable torque and consistent speed for demanding RC applications.

About the Firma 3660 Brushless Motor

Precision & Power

Featuring a four-pole rotor design, the Firma 3660 provides superior torque and throttle response. Its CNC-machined aluminum housing ensures optimal heat dissipation and durability, while insulated high-purity copper windings promote efficient power transfer. The five-millimeter alloy steel output shaft provides extra strength and smooth rotation, reducing wear over time. With preinstalled four-millimeter gold-plated bullet connectors, installation is quick and hassle-free, getting you back on the track faster.

Features:

• 2-3S LiPo power compatible for versatile performance
• 4-pole rotor design delivers strong torque and smooth control
• CNC-machined aluminum housing improves cooling and durability
• Insulated high-purity copper windings enhance efficiency
• 5mm alloy steel output shaft ensures strength and reliability
• Preinstalled 4mm gold-plated bullet connectors for easy setup

Includes:

• (1) Firma 3660 4-Pole Sensorless Brushless Motor

Specifications:

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…

This product was added to our catalog on October 6, 2025

• Arrma Fury
• Arrma Infraction V3 3S BLX
• Arrma Quake 223S
• Arrma Vorteks 223S