3c75ebfd_e_Comparison___RacingBrake_com__Benefit
[Features] Disc Material [Competition] Standard G3000 material - 30,000 psi of tensile strength. [RacingBrake] G3500 racing formula (35,000 psi of tensile strength) and heat treated [Benefit] 
More resistant to wear and warpage
Feature Comparison - RacingBrake.com
Benefit