Polarstar Kythera HPA Engine for SA Version 3 AK Airsoft Rifles

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Upgrade your SA Version 3 AK airsoft rifle with the cutting-edge Polarstar Kythera HPA Engine. Engineered by Polarstar, a trusted name in airsoft technology, this HPA engine brings exceptional performance and customization options to your airsoft gameplay.

The Polarstar Kythera HPA Engine is designed specifically for SA Version 3 AK airsoft rifles, offering a seamless fit and optimal compatibility with most Version 3 gearboxes. With this upgrade, you can take your rifle to new heights of power, precision, and reliability. Equipped with semi-automatic firing modes, the Kythera HPA Engine delivers consistent and crisp shots. Experience enhanced control and accuracy on the battlefield as you engage your opponents with precision and confidence.

The Kythera HPA Engine offers adjustable velocity ranges, allowing you to fine-tune your rifle's performance according to your preferences and field regulations. Achieve velocities ranging from 270 to 500 FPS with 0.20g BBs, providing versatility for various gameplay scenarios. Operating at an adjustable pressure range of 60 to 180 psi, the Kythera HPA Engine gives you control over your rifle's power output. Fine-tune your air pressure to optimize performance and find the perfect balance between velocity, range, and efficiency.

With its durable construction and advanced engineering, the Polarstar Kythera HPA Engine ensures long-lasting performance and reliability. Upgrade your SA Version 3 AK airsoft rifle today and experience the next level of airsoft gameplay with the Polarstar Kythera HPA Engine.


  • High-performance mechanical HPA system designed from the ground up for optimal performance
  • Patent-pending valve mechanism ensures efficiency, consistent velocity, and realistic trigger feel
  • Complete shot cycle activated solely by the trigger for consistent nozzle movement and rapid follow-up shots
  • Adjustable trigger for personalized weight, length of pull, and overtravel
  • Adjustable nozzle dwell and return speed for fine-tuning performance
  • Easy installation in standard Version 3 gearbox as a single assembly without requiring gearbox modification
  • Wide operating pressure range of 60 to 180 psi for velocity customization
  • Tailor the system to different requirements and applications
For Most Version 3 Gearboxes
Fire Modes:
Semi Auto
270-500 FPS w/ 0.20g BBs
Package Includes:
1x Kythera Engine
30 Day Return & Warranty

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