These are 17mm Hub Retainers from Traxxas.
This is a stock part for the:
This is an Optional part for the:
These are the Retainers for 17mm Wheel Hubs (Traxxas 6856X and Traxxas 5853X)
Four (4) Hub retainers
These are the Wheel Hub Sets that these Retainers are a part of. If you need the complete set, they are available at our store, HopMeUp!
Traxxas 6856X: 17mm Wheel Hub Set (Used on the Slash 4x4, Stampede 4x4)
Traxxas 5853X: 17mm Wheel Hub Set (Used on the Slash 2wd, Stampede 2wd, Rustler 2wd)