Spektrum SPMXSM1400 FIRMA 4000kv 1/10th 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 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.

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

Contents

• Firma 4000Kv Brushless Motor

Requires

• 85A ESC

• Bushing Or Bearing: Bearing
• Motor Design: Inrunner
• Input Voltage: 6 - 8.4V
• RPM/Volt (Kv): 4000Kv
• Sensored: No
• 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