Been running the groved discs on my project thread for 3 years, no issues. These discs where skimmed before i bought them, so cant see how they are warped, unless the skimming went horrifically wrong.
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2001 Bugeye - Project Black/Red, 1997 JDM Type R, 1995 V1 WRX, Defender Tithonus MOD Styleeee!
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