EBC Bluestuff NDX Full Race Rear Brake Pads for BMW M5 and M8 – High Friction Performance and Track-Ready BrakingBluestuff NDX is a high friction sport and race material that can be used for aggressive street driving and certain types of track use. The material has had much success on the track with quality aftermarket calipers (Multi piston systems with better release and cooling and larger rotors) and limited success with street based calipers where pad size and caliper drag can challenge any brake material. The biggest advantage of EBC Bluestuff NDX is their