[Editor’s Note: This article originally ran in the May 2015 issue of Grassroots Motorsports. Some information and pricing may be different today]
We loved our new SPC Performance front upper control arms for our past project Nissan 350Z, but the bushings were SCCA-illegal as delivered.
It all has to do with the bushings on the inner pivots. SCCA Street Touring rules allow for alternate bushing material, so long as you don’t replace non-metallic components with metallic components. So you can replace rubber bushings with urethane or nylon or Delrin or some other non-metallic material.
Ah, but there’s another catch: When replacing…
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