If your toe is OK at stock ride height, and you are now dropping the ride height and extending our the upper arm to correct for rear camber, we recommend getting the traction rod ("upper toe arm") to adjust for toe rather than getting the toe arm ("lower toe arm").
This is because both the upper arm and the upper toe arm are connected to the upper part of the rear upright, but the lower toe arm is connected to the LOWER part of the rear upright. The toe changes that result from extending out the upper arm should be compensated for using the upper toe arm (traction rod). This maintains the geometry better in this case vs. using the lower toe arm.
If your toe is not OK at stock ride height, then you will need both the toe arm and traction rod to eliminate bumpsteer when you drop the suspension. But as Dousan pointed out, bumpsteer won't be very noticeable in this Nissan rear multilink, I wouldn't worry about it unless its a race car where every little bit counts. So in this case, most go with just the adjustable lower toe arm and that's OK.
Quote:
Originally posted by kazuo
word dude.
I was thinking about getting the RUA to fix the camber issues and maybe helping the drive, but then i was reading on SPL's site that the RUA alone will alter the geometry of the other rear links, which will just cause more bumpsteer. they recommend purchasing a rear traction arm and getting it all realigned at a shop.
my question is then, all i will need is the RUA and the traction arm, or should i just get a toe link also and get it over with? i am retarded when it comes to suspension. please teach me, aaronsan :P 
word.
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