While most pads are formed from fibers and organic materials bonded together by resins, CL Brakes Sintered Pads begin as powdered metals such as iron, bronze, and copper, mixed with roughly ten other constituent materials including graphite and carbon. The mix is compressed in a tool under extreme pressure to give it shape, and then brazed onto a backing plate in an oven at 1800F. The resulting material is characterized by a consistently high coefficient of friction, stability at high temperatures, and an extremely low wear rates.
CL Brakes originally created sintered brake materials for military applications such as tanks, helicopters, and airplanes, as well as high speed freight and passenger trains like France's TGV. After extensive development, the technology was successfully introduced in motorcycle applications. The most recent development has focused on aligning the sintered technology with racecars. CL Brakes have now been used successfully at the highest levels of motorsport, including World Rally Championship (WRC) and NASCAR Sprint Cup.
The best way to describe the wear rates on this compound is ‘ridiculous.’ You can hammer them over and over, and they just don’t wear out. In independent dyno testing, the RC6E showed wear rates that were as much as five times lower than some of the currently popular semi-metallic race pads. While having slightly lower bite than the RC6, the RC6E still has more bite than most other race pads on the market. They’re also extremely easy on rotors. They initially appear expensive, but when you factor in how long they will last (along with your rotors), they’re actually a tremendous value.