KIRA 400-39


KV: 3900 U/min/V

Weight: 110 g, Outer diameter: 28 mm, Length: 45.5 mm

Article number: 5381

Delivery time: On Request

Available on backorder


The KIRA 400 motors are brushless internal rotors specially optimized for the needs of gliders, RC cars and racing boat drives. Thanks to an integrated fan, optimum cooling is provided at high motor speeds, while the gearbox enables high torques with low weight.

The slim design fits into almost any fuselage and the good efficiency of the entire drive including the large propeller allows amazing flight performance.

Different, finely tuned speeds are available per motor size. In addition, the KIRA motors are very broadband, so that only one gearbox variant is required per motor type to cover the entire range of applications. This makes your motor selection considerably easier. The KIRA 400 is suitable for applications up to 250 W continuous power.

With it, gliders up to 2 kg, motor models up to 1.5 kg and hotliners up to 1 kg can be motorized excellently.

Technical data

KV 3900 U/min/V
RPM max. 50000 U/Min
Continuous power 300 Watt
Free shaft length 11 mm
Number of poles 2
Weight approx. 110 g
Outer diameter motor 28 mm
Length motor 45.5 mm



Dimensioned drawing