Spektrum Firma 5687 1100KV Brushless Motor 8mm - SPMXSM4200

The Spektrum Firma 5687 1100KV 4‑Pole Brushless Motor (SPMXSM4200) delivers serious electric performance in a robust 56 mm diameter, 87 mm length can with an 8 mm shaft and D6.5 plug type. Rated for 3–8S operation (up to 33.6V), it combines an 86% efficiency rating with a maximum continuous current of 95 A and up to 7900 W of power.

This 1100Kv, 4‑pole brushless design offers smooth, consistent power delivery across a wide RPM range. Use the detailed dimensions and electrical specifications below to help confirm fit and system requirements for your build.

Specifications

• Efficiency: 86%
• Maximum Continuous Current: 95 A
• Motor Size: 5687
• Motor Type: Brushless
• Number of Poles: 4
• Outer Diameter: 2.2" (56 mm)
• Plug Type: D6.5
• Power (watts): 7900 W
• Product Length: 3.42" (87 mm)
• Product Weight: 893 g
• RPM Range: 36960
• RPM/Volt (Kv): 1100Kv
• Shaft Diameter: 0.31" (8 mm)
• Shaft Length: 22±0.5
• Voltage: 3–8S / 33.6V

Suggested Compatibility

• Applications requiring a 56 mm outer diameter, 87 mm length motor with an 8 mm shaft
• 3–8S power systems using a D6.5 connector type
• ESCs and drivetrains able to accommodate up to 95 A continuous current and high power levels