I ran spc front and rear prior, rear arm snapped on the track at close to 80mph on compression and caused severe damage all rear arms and bushings. I emailed Spc with pictures and the failure and said they would send me a new one and never did. I will make a separate post about it in the track section. The front spc control arm will slip when driven hard unless you torque the **** out of them. Not worth saving and cheaping out. I could have easily have hit the track flag post but was lucky I didn't.
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