That's what Losi calls your steering knuckles. Where the tie rod attaches to turn the truggy. They call them Front spindles. I've broken two now but when they break you lose the ball stud because it snaps at that point so it gets lost only god knows where. I don't have a part number and I'd check for you but I can't see PDF files on this terminal My 8ight probably wouldn't break if it wasn't so cold here...

http://www.losipartshouse.com/servle...8B%2C8T/Detail

And you'll need the ball stud and nut for this^^^

http://www.losipartshouse.com/servle...RS-cln-/Detail