Hawk Performance HB183B.585 Hawk 2001-2001 Ford Mustang Bullitt 4.6 HPS 5.0 Rear Brake PadsHawk Performance HB183B. 585 HPS 5. 0 For years, engine builders have been pushing motors to the limits of their ability, and at Hawk Performance, we're closer than ever to pushing the ABS Rev Limiter to its limits. The Hawk HPS 5. 0 (High Performance Street 5. 0) brake pad compound gives your vehicle the greatest possible stopping power and pedal feel without compromising ABS. HPS 5. 0 is a Ferro Carbon compound that provides advanced braking