i haven't heard any long term reviews on the Z1 2 pc rotors but they do look good. i know the racing brake ones are good, the racing team i shot for this year in Pirelli World Challenge uses them and they seemed to hold up well from what i could tell
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Patrick // 06 Frontier 6spd Nism osis // Mods: Uprev Tuned @ Z1 Motorsports: 257whp & 292 ft lbs
09 Pontiac G8 GXP // M6 // Sunroof // Tint... For now
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