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Angel Custom "KRATOS" Ultra High Strength / High Performance Steel Teeth AEG Piston (Model: KRATOS II)

ID: 93878 (Part-AC-PT-DSGII-F)
Angel Custom KRATOS Ultra High Strength / High Performance Steel Teeth AEG Piston (Model: KRATOS II)
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Angel Custom



  • KRATOS II design features pre-adjusted Angle of Engagement (AOE) ideal for high-cycle custom builds
  • Extended piston body and precisely positioned teeth correct for AOE with 3rd tooth modified to allow for reliable drop-in installation
  • DuPont Super Nylon polymer piston body
  • Hardened SAE steel teeth rack
  • 48 degree WEDM precision cut teeth
  • Gold Titanium Nitride (TiN) coated rack for durability and wear pattern indication
  • Up to 55 RPS for high speed builds with out premature engagement (PME)
The KRATOS high strength AEG piston was developed from over 2 years of R&D with a mission to create the best Airsoft AEG piston at all costs. In collaboration by our lead techs at Evike Performance Shop, engineers at Angel Custom, and our friends at Umbrella Armory, the KRATOS is engineered to meet the demands of Airsoft technicians and enthusiasts worldwide.

Careful consideration was put into which materials were selected to get the most out of the piston in high-performance tuning. Key features, such as the angle in which the teeth are cut, the coating on the teeth rack, and the overall piston length were carefully considered in order to provide a piston design that can withstand the rigors and abuses of high-performance AEG builds.

The KRATOS piston has been stress tested by industry experts, withstanding 100,000+ rounds of continuous fire with barely any signs of wear, holding up to high RPS and high power custom builds, and making its way into the gearboxes of some of the best custom builds on the market.

Manufacturer: Angel Custom


Length: 69.8mm
Teeth: 13.5 (full teeth)
AOE: Pre-Adjusted
Application: For High RPS builds without PME (tested to 55 RPS at full stroke / 1.5J)
Compatibility: Most Airsoft AEG gearboxes
Material: Dupont Super Nylon polymer, Hardened SAE Steel (with TiN Coating)

About Angle of Engagement (AOE):
AOE refers to the angle of the Sector Gear teeth when making contact with the teeth on the piston. As cycle speeds increase in a tuned up gearbox build, it™s important to adjust this angle to improve contact between these teeth. AOE correction / adjustment simply means the angle of the initial sector gear tooth and the beginning teeth on the piston rack will be close to parallel, making sure that the faces have firm contact before applying load. This adjustment improves parts durability, longevity and performance in higher-stress builds (high cycle rate / high spring tension).

Tech Tip: For added durability in high-performance builds apply glue to the teeth rack to better secure it to the piston

About Angel Custom

Angel Custom was founded on a mission to promote satisfaction and excitement on the Airsoft battlefield. Founded by Airsofters searching for perfections, it is our joy and pride to present you our battle tested creations. We strive to provide quality products and services that are reliable and trustworthy to be worthy of the trust placed in us.

14 Customer Reviews

(Write a review)

by Nicholas G. on 03/01/2024
"Wonderful piston. A must have for the G&G F2000, since the stock piston only has the last tooth metal. This piston is also much more durable and can handle tightening the spring in the G&G F2000 to increase FPS. Combine with a Lonex POM head and you've got an excellent seal.
by Matthew M. on 01/15/2023
"This is the only piston i use as it can handle m190 springs on a ssg system and DSG with high rof. 10/10.
by Larry L. on 01/02/2023
"This is a very good pistol for high performance builds.

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