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- Excellent upgrade for 540- and 550-size brushed motors with the same diameter and mounting pattern (vehicle must accept pinions with a 1/8" bore)
- High-quality 4-pole sintered rotor
- 4mm gold plated bullet connectors
- High-quality construction with precision ball bearings and hardened steel 1/8" shaft
Overview
The Firma 4000Kv brushless motor is a great choice for 1/10 scale 4WD, 2WD, and on-road models running on 2S LiPo power. Featuring a low cog 4-pole 8-magnet rotor design, CNC machined aluminum housing, insulated high purity copper windings, high-quality alloy steel 3.175mm (1/8") output shaft, and precision bearings for high durability and smooth rotation. Preinstalled 4mm gold plated bullet connectors for easy installation, and perfectly matched for the Firma 85A Smart ESC.
PRODUCT SPECS
Input Voltage
6 - 8.4V
RPM/Volt (Kv)
4000Kv
Sensored
No
Bushing Or Bearing
Bearing
Motor Design
Inrunner
Application
1/10 scale 4WD, 2WD, and on-road models running on 2S LiPo power
Number of Poles
4
Product Weight
7.4oz (210g)
Shaft Diameter
0.125" (3 mm)
Maximum Continuous Current
40A
Motor Type
Brushless
Connector Type
4mm Bullet
Efficiency
81%
Motor Class
1/10 Scale
Motor Size
3652
