EBC Bluestuff NDX brake pads are ultra high friction race pads that are capable of street use. Having a non metallic Aramid base, NDX reduces rotor wear and eliminates the firework display spark emitted in high speed braking by competitive semi metallics. Rotor wear is drastically reduced and pad life enhanced. Although some intermittent noise is generated under heaviest braking, this is not excessive and once used to how these pads work, drivers will quickly ignore this minor negative point when they experience the massive improvement in braking.