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Prometheus Reinforced Wide Use EG Gear Set for Airsoft AEGs (Type: Standard / Ratio 18:1)

ID: 11322 (Gears-4571443174642)
Prometheus Reinforced Wide Use EG Gear Set for Airsoft AEGs (Type: Standard / Ratio 18:1)
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Prometheus / Laylax



  • Heavy duty steel gears
  • Precision CNC machined construction
  • Heat treated for improved strength and durability
  • For use with a wide variety of Airsoft gearboxes and brands
The Prometheus Wide Use Gears 13:1/18:1 Gearsets are rated for Japanese velocity limits, 330 FPS/98m/s/1 joule. These gearsets are not tested on higher stress setups and therefore are not recommended for such. Please refer to the Prometheus EG Hard Gear series instead for higher stress builds.

Manufacturer: Prometheus


Package Includes: Spur Gear, Sector Gear, Bevel Gear, Shim set
Materials: Steel, Metal Alloy
Gear Set Type: Standard, 18:1 ratio
Spring: Recommended M100 and Under
Application: V.2, V.3, and all gearboxes that use standard type AEG Gears. (M4, AK, MP5, G36, P90 and other compatible AEG models.)
Production Type: CNC Machining

About Prometheus / Laylax

Providing products in the Japanese market for the better part of 20 years, Laylax is well known for their high manufacturing quality and precise tolerances. Their tried and true parts and accessories have led them to be the leader in Japanese airsoft engineering.

2 Customer Reviews

(Write a review)

by Taro M. on 07/11/2020
"Put these gears in a HK vfc urmarex 416a using a 30k ASG motor, m130 spring. Fantastic trigger response with semi and 29 rps full auto and stock length inner prommy barrel with 375 fps. Should be hitting 400 fps but think I have a bad piston head ring. Over all the gears are holding up fine. No chipmunk gear noise, but not super quite either. Gear sound is typical.

Con: gear axles are shorter as is the gear axle nub more than other drop in gears and I understand that these are engineered for krytac gear box. Havent tried them in one, so cant really confirm that from a store tech. Had to use quite a bit of shims to make up the gap difference and gear axle doesn't seat flush with the outer bushing hole. Axles sit a bit recessed inside. Shimmed the gear solid, so hope the bushings dont oval out.
by Nolan E. on 09/30/2021
"@Taro M

I too had the same problem in my 13:1, the gears needed quite a few shims but they ended up fitting well in my Retro Arms V2 Split gearbox. The bevel gear is a little noisy because of how many teeth there is for the ARL. Other than that these gears have been amazing. I've tested over 30 RPS on a M125 by ASG with the Laylax high speed motor.

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