Q: Should I install these rear arms one at a time or as a full set?

You can add them individually, but the rear works best as a system. We recommend pairing this traction arm with the rest of the rear suite: the adjustable camber arm, the adjustable toe arm, the trailing arm, the billet lower fore link, and the adjustable sway bar. Doing the full rear at once means one install and one alignment, and every link is then holding its location instead of a mix of billet and worn rubber.