Spektrum RC Firma Sensorless Brushless Motor (4000Kv)

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This is a Spektrum RC 4000Kv Firma Sensorless Brushless Motor. The Firma 4000Kv brushless motor is a great choice for 1/10 scale 4WD, 2WD, and on-road models running on 2S LiPo pow er. Featuring a low cog 4-pole 8-magnet rotor design, CNC machined aluminum housing, insulated high purity copper windings, high-quality alloy steel 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 130 Smart ESC. Features: 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 Specifications: Application: 1/10 scale 4WD, 2WD, and on-road models running on 2S LiPo power Bushing Or Bearing: Bearing Connector Type: 4mm Bullet Efficiency: 81% Input Voltage: 6-8.4V Maximum Continuous Current: 40A Motor Design: Inrunner Motor Size: 3652 Motor Type: Brushless - Sensorless Number of Poles: 4 Product Weight: 7.4oz (210g) RPM/Volt (Kv): 4000Kv Shaft Diameter: 0.125" (3 mm) Wire Gauge: 12 AWG Show more