I had a race car that used a magnesium pressure plate on the rear wheels. I had them polished to a mirror finish and then had them clear powder coated. They stayed looking good for almost 2 race seasons. It is the shiny piece in the center of the LR wheel, the black rear axle nut holds it up...
My baby boy's first race. My brother Billy holding Andrew after winning the race. That is Dan Wheldon right behind them. He fell out of the race with mechanical problems