- Made From Aircraft Quality 8620 Steel.
* Entirely Hardened By Carburization Followed By An Oil Bath, As Opposed to water, quench.
* Black oxide finish.
* The Ring Gear Kit Includes A Replacement Starter Clutch and Pinion Gear Assembly (one piece). Starter Clutch Features 20% Larger Rollers For Stronger and Longer Starter Life.
* Made In USA