I recently got the missing brake rotor from Dr. Diff the other week. The front rotors from the Stage 4 kit I got have internal vanes that are vertical while these new rotors are curved
The weird thing is they are both curved in the same direction! Kind of hard to see though cause I painted one hi-temp black


I actually have 2 drivers side rotors! Cass emailed me back and said this was normal. It appears that OEMs often produce rotors like this even on their halo cars. Is it ideal? No, but I have no problems running like this because I doubt I'll get into high enough temps to max out my Carbotech XP12's

On a side note, these suckers are heavy!
They weigh more than my wheels!