RST 2 is a semi-metallic, resin-bonded compound with steel fibers developed for drivers and teams who need strong cold performance, quick initial bite, and a highly usable response in demanding sprint-based motorsport environments. Long associated with rally and NASCAR-style applications, it has historically been positioned for tarmac rally, GT and touring car sprint racing, NASCAR, and also as a rear-axle pad used with RST 1 on the front axle where higher temperatures are expected. Its character is defined by a medium-high friction coefficient, good initial bite, a mild progressive torque curve, and good pedal feel, giving it a confident and controllable balance that works especially well where immediate response and consistency matter. Overall, RST 2 stands out as a strong choice for drivers and teams looking for a brake pad compound that combines performance, modulation, and reliability in hard-driven motorsport conditions.