EBC Racing Does However Emphasise That RP-X Has Been Developed For Peak On Track Performance; Meaning Higher Levels Of Brake Dust And Brake Noise Should Be Expected. RP-X Has Comparable Disc Wear To Many Other Popular Track/Race Materials; However RP-X Disc Wear Is Considerably Greater Than EBC Racings Other Track Pad RP-1 Which Results In High Levels Of Brake Dust. Compared To RP-1/RP-X Has A Increase In Friction Coefficient Across Its Working Temperature Range With A Much More Positive Initial Bite. This Characteristic Potentially Makes RP-X More Suitable On Heavy Or Inherently Under Servoed Vehicles. For Light Medium Weight Vehicles; Cars With Non EBC Big Brake Kits Fitted Or Vehicles With No ABS; The Less Fierce Nature Of EBC Racings Other Track Material RP-1 May Be Preferable