Disc brakes were originally developed for race cars. When race cars move alone at high speeds they also need to decelerate rapidly. These disk bake systems are better ventilated and reduce some stress that racing and excessive heat buildup can cause. Trinity Autosport sells disc brake systems for Porsche 996 GT3 (1999-2005). Find brake pads, disc brake systems, calipers for your Porsche 996 GT3 (1999-2005). High performance cars need better and more powerful brakes and variations on the basic brake caliper design to help these brakes provide superior stopping power.