The Carbotech 1521 is a high-performance street compound. The 1521 compound is known for its release and modulation, along with unmatched rotor friendliness. It is also a very low dusting and low noise compound with an excellent initial bite. This compound's excellent linear torque production provides incredible braking force without ABS intervention.

Carbotech 1521 operating range starts out at ambient and goes up to 800 F (426 C+),  which makes it suitable for all street cars.