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Scorpion HKIV 4025-1100kV Brushless Motor - (OPEN BOX)



Scorpion HKIV 4025-1100kV Brushless Motor - (OPEN BOX) SCO-335(OB)

Scorpion HKIV 4025-1100kV Brushless Motor - (OPEN BOX)

$209.00 $20900 Regular price 189.00 $18900 Free Shipping*

Status: Only 1 left, order soon!

HKIV 4025-1100kV Brushless Motor from Scorpion - OPEN BOX

Open Box Details:

  • Missing Parts: None
  • Damage/Defects: Minor Scratches on motors case from attempting installation.
  • Builder Notes: All issues are simple cosmetic fixes and will not affect flight performance.

Please Note: Because of their deeply discounted prices, Open Box merchandise does not include the standard Motion RC warranty and cannot be returned or exchanged even if additional product issues are found. Please consider these restrictions before purchasing Open Box products.

The Scorpion HKIV-4025 Series Motor is designed for use on 600 class helicopters running on 6 cell Li-Po power.  This motor qualifies as an excellent upgrade motor for the Roban 600 class scale helicopters.  Representing the most technologically advanced power source ever offered for a 600 class electric helicopter.

Scorpion Competition Series Brushless Motors are built from the best materials available, and are designed to provide both quality and performance at an affordable price.  Scorpion starts with high quality aluminum alloy parts that are produced on the latest CNC milling machines.  These parts are then gold Electro-Coated to provide a beautiful, long-lasting finish.  The stators are made with 0.2mm laminations to give maximum efficiency, and minimum Eddy current losses. The stators are epoxy coated to prevent shorts, and are wound with wire that is rated at 180 degrees C (356 F).  The magnets used in Scorpion Motors are custom manufactured to be able to withstand high temperatures, making a motor that is virtually impossible to burn up in normal use.

For the best overall combination of quality, performance, and value, we highly suggest using Scorpion Motors in your Roban helicopter!


  • Exceptional quality, performance and value
  • Backed by 2-year warranty (bearings not included see tech note below)
  • Built with the best possible materials
  • High power, vibration-resistant 


  • Scorpion HKIII 4025-1100kV brushless motor
  • (3) 4mm Female connectors
  • (3) Heat shrink
  • (4) M3 screws


  • Please review the specification table at the bottom of this page for battery, ESC and other recommendations that will work best for this motor

Brushless Motor Measurement Key

Tech Note:  Scorpion Motors are built to last, and are backed with a 2-Year warranty against defects in materials or workmanship.  However, due to the high RPM of these motors, and the fact that we cannot control the installation and setup, the bearings are not covered by the 2-Year warranty, nor is any subsequent damage caused to the motor by a bearing failure.  Bearings are a normal wear item, and as such, need to be maintained and changed periodically.  For maximum life, make sure that a sufficient gap is left between the pinion and main gear during motor installation to avoid binding, and put a small drop of oil on each bearing every 5-6 flights.  It is the responsibility of the pilot to ensure that the bearings are maintained properly.

Product Specifications:

Motor Type


kV Rating (RPM/Volt)


Maximum Watts


Continuous Current


Maximum Burst Current

130A, 5 seconds

Recommended Battery (Input Voltage)

6S (22.2V)

Recommended ESC

High Voltage 120A

Recommended Propeller / EDF


Slots, Poles


Shaft Diameter (A)


Shaft Length (B)


Motor Length (C)


Motor Diameter (D)


Overall Length (E)



354g / 10.79oz

Connector Size


Product Questions & Answers

NOTE: Questions submitted on this page are answered by customers who have previously purchased this item. If you have a support related question that requires immediate assistance, please visit our Help Center.

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