I have SPC front arms, and I was able to eliminate the negitive camber after my Swift install. For a DD like me, it's worth it. Longer tire life and a more stock look as the wheels are vertical as opposed to pointing inside.
Hardware wise, they are so-so. There is no redundancy like the SPL front arms(Z33). I hit a deep pothole one day and it broke the locking nut loose on one of the arms....knocking my 370Z out of alignment. With the SPC design, there is a greater possibility for a catastrophic failure. So I wouldn't take these on the track. There are quiet...no squeaking or any other noise.
Bottom line, they get the job done for me until a better/safer product comes out. I would buy them again and recommend them to a DD who wants to retain a factory alignment/look and preserve tire life.
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