The Profile Design Carbon Rim Specific Brake Pads are specifically formulated to withstand the same heat our rims could take on, our brake pad compound is specifically formulated for TwentyFour Series wheelsets. Using a specially formulated rubber compound, durometer and friction agent with an in house developed proprietary brake pad resulting in more consistent braking power and reduced braking distances over that of other carbon fiber wheelsets. Reduces braking distance by 28% compared to Profile's Altair models! Better Modulation, Shorter Braking Distances and Increased Heat Tolerance. Rather than using the consistently failing attempts at reducing the temperature produced by braking, Profile Designs rejected what has become accepted practice and instead increased the heat capacity of our materials. Profile Designs proprietary high Tg point resin is 30% higher than other Tg resins. A rim that can withstand more heat leads to improved braking performance by allowing consistent heat built up rather than attempting to reduce heat which often decreases braking power. | Profile Design Profile Design Carbon Rim Specific Brake Pads