EBC DP5767NDX 96-98 Porsche 911 (993) 3.6 Carrera 4S Bluestuff Rear Brake PadsEBC DP5767NDX 96 98 Porsche 911 (993) 3. 6 Carrera 4S Bluestuff Rear Brake Pads Product Information The BlueStuff NDX race formula is an ultra high friction race pad with a friction level peaking above 0. 6 under braking, which will generate more G force than most pads out there if not all. BlueStuff is capable of street use as it bites well from cold. The big advantage of this pad is that it is one of the worlds first and only out of the box pre