Parts/Electric power/Brushless motors/Scorpion HK5 4225 Brushless Motor (6x32mm Shaft) (825kV)
Scorpion HK5 4225 Brushless Motor (6x32mm Shaft) (825kV)
Scorpion

Scorpion HK5 4225 Brushless Motor (6x32mm Shaft) (825kV)

Part # SCP-HK5-4225-825-632
Where to buy
$319.99
AMain Hobbies
Seen Oct 12, 2026
$319.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

Motor Overview:

The Scorpion HK5 4225 Brushless Motor is the fifth-generation evolution of Scorpion's renowned HK-Series, delivering exceptional power, efficiency, and torque-per-amp performance. Designed for demanding applications, the HK5 Series introduces a redesigned cooling system focused on keeping motor temperatures under control during high-power operation. The HK5-4225-825KV is optimized for smooth, lightweight 700-size helicopter setups and high-power 600-size helicopters running on 8S LiPo power. It can also provide up to 5100W of power for UAV applications requiring high-output brushless motor performance.

About the HK5-4026 Brushless Motor


High-Efficiency Power and Torque

The HK5 Series is engineered to deliver impressive power and efficiency while maintaining Scorpion's market-leading torque-per-amp performance. The HK5-4225-825KV provides the high-output capability needed for demanding 700-size and 600-size helicopter applications, as well as UAV platforms requiring substantial power.

Advanced Cooling Design

Scorpion significantly improved the HK5 Series cooling system with an updated internal fan design working together with the proven external centrifugal fan. This combination nearly doubles airflow through the motor, helping reduce operating temperatures and maintain consistent performance during demanding flights and extended high-power operation.

Features:

  • HK5-Series fifth-generation design
  • 825kV motor
  • High power-to-weight performance
  • High torque-per-amp capability
  • Up to 5100W power output
  • Updated internal cooling fan
  • External centrifugal fan
  • Nearly doubled motor airflow
  • Improved thermal management
  • 8S LiPo compatible

Includes:

  • (1) Scorpion HK5 4225 Brushless Motor
  • (3) 4mm Female Bullet Connectors
  • (3) Heat Shrink
  • (1) Hardware pack

Specifications:

Application 600-700mm Heli Blade
Type Sensorless Brushless
kV Rating 825kV
Operating Voltage 8S (29.6V) LiPo
Continuous Current 115Amps
Peak Current 170Amps (2 Seconds)
Dimensions 2.07x2.24in (52.5x56.9mm)
Shaft Dimensions 0.23x1.26in (5.98x32mm)
Weight 14.51oz (411.4g)
CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

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