I wanted a 1/10 scale prerunner with long travel suspension so I decided to make it myself! Designed in OnShape, printed on an Ender 3. I have a bit more info on my thingiverse page. Any other RC hobbyists on here? https://www.thingiverse.com/thing:6306854
The one that appears to be connected at the front has another beam that goes down to the other wheel knuckle. The one at the front is connected to the servo for the steering input. Hope that helps! Look up “dual swingset steering” for more information.