Hawk Performance HB848B.646 Hawk 14-19 Porsche 911 GT3/GT3 RS / 2016 Porsche Cayman GT4 HPS 5.0 Front Brake PadsHawk Performance HB848B. 646 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