PolarStar Kythera HPA Engine for Version 2 M4 Airsoft Rifles
Price: $288.00 — In stock at 3 retailers.
Prices last checked July 29, 2026 across 3 retailers.
Specifications Brand: Polar Star Firing Modes: Semi-Automatic Velocity Ranges: 270 FPS - 500 FPS (Measured using 0.20g BBs) Operating Pressure: 60psi - 180psi Compatibility: Most Version 2 Gearboxes Features Designed from the ground up as a high performance mechanical HPA system, not a modification of a solenoid operated design Patent pending valve mechanism provides excellent efficiency and consistent velocity combined with a realistic trigger pull and reset Completes a full shot cycle on the trigger alone which translates into consistent nozzle movement and rapid follow up shots Adjustable trigger (Weight, Length of pull and over travel) Adjustable nozzle dwell/return speed Easy to install system that fits into a standard Version 2 gearbox as a single assembly and typically doesn't require any modification to the gearbox The Kythera has a wide operating pressure range of 60psi to 180 psi which allows you to fine tune the velocity of the system and tailor for different requirements and applications
PolarStar Kythera HPA Engine for Version 2 M4 Airsoft Rifles price comparison: the lowest price is $288.00 at Xtreme Airsoft, and the median across 3 tracked listings is $288.00.
Which nozzle fits HPA? Compare fitment & prices →
Where to buy the PolarStar Kythera HPA Engine for Version 2 M4 Airsoft Rifles: prices at 3 retailers
- Xtreme Airsoft: $288.00 — In Stock
- Airsoft Station: $288.00 — In Stock
- Evike: $288.00 — In Stock
Frequently asked questions about the PolarStar Kythera HPA Engine for Version 2 M4 Airsoft Rifles
- How much does the PolarStar Kythera HPA Engine for Version 2 M4 Airsoft Rifles cost?
- The PolarStar Kythera HPA Engine for Version 2 M4 Airsoft Rifles ranges from $288.00 across 3 retailers. The lowest current price is at Xtreme Airsoft. Prices are updated regularly from each store's live catalog.
- Where can I buy the PolarStar Kythera HPA Engine for Version 2 M4 Airsoft Rifles?
- The PolarStar Kythera HPA Engine for Version 2 M4 Airsoft Rifles is currently in stock at 3 retailers including Xtreme Airsoft, Airsoft Station, Evike. We track availability across 3 airsoft stores and update stock status regularly.
- Is the PolarStar Kythera HPA Engine for Version 2 M4 Airsoft Rifles a good hpa engines upgrade?
- The PolarStar Kythera HPA Engine for Version 2 M4 Airsoft Rifles by PolarStar is listed in our HPA Engines category and is priced from $288.00. We aggregate prices from 3 retailers so you can compare and find the best deal. Check the price comparison table above for current pricing from each store.
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