Introducing the Xtreme series, 30% more stopping power than the Gold+ series. Made in America with the latest friction material from Dupont. Moderate dust. Delivers 18, 000 miles of Xtreme performance. The Xtreme series from Lyndall is the most advanced brake that we've ever produced. The Lyndall Xtreme series boasts the highest friction rating yet: HH. This means these brakes will give you a .6 coefficient from ambient to first fade and a .6 coefficient from first recovery to second fade. 30% more stopping power than stock pads. Run 20% cooler than sintered pads. Zero noise. Moderate Dust. Made in USA. Front, O.E.M.: 44063-83C