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SKU: 4571443174666

Prometheus EG Hard Gear 13:1 High Cycle

EG Hard Gear 13:1

  • Rated for 400+ FPS
  • Extremely strong forged Japanese steel
  • Redesigned bevel gear for improved semi-auto response
  • Precision machined, quiet gear mesh sound
  • Perfect pairing with the Prometheus anti-reversal latch and pinion gear

The proven EG Hard Gear series with over 10 years of service are precision machined, made in Japan, heat treated, and forged to the highest standards. Due to such precision machining, you can expect a much quieter gear mesh sound even at higher FPS and fire rates. Tested on the industry standards of a 11.1v 20c lipo battery with a 40k high torque motor on a MS135 spring (400+ FPS), the EG Hard Gear set withstood over 10,000 rounds of continuous usage with no visible wear. 
Reliable, precise, and proven.


  • 13:1 Sector Gear
  • 13:1 Spur Gear
  • Improved Semi-auto Bevel Gear


  • Standard v2/v3 Gearbox (with modified piston tooth, AOE adjustments)
  • Direct drop in for Tokyo Marui HC (High Cycle) Custom AEGs
    • M4CRW
    • MP5A5
    • G3SAS
    • M4 Patriot
    • AK47
    • MP5K
    • PS90

※NOT compatible with Krytac Nautilus v2 gearbox.
※LayLax is not responsible for misuse or damage caused by extreme circumstances outside what is stated above.

※The EG Hard Gear series is tested rigorously on a variety of industry standard settings, 11.1v on 20c, 400-450 FPS (MS120-135 spring), 30-40k high torque motor, etc. However any damage caused by the user are not borne by LayLax as any number of settings may cause issues.