The Extreme Cam is specifically engineered to extend the life of your brakes. Our customers tell us they are getting up to five times the life out of their s-cams and cam bushings and are significantly increasing the life of their brakes and drums. Each all-inclusive kit contains everything that you need to convert any trailer to the Extreme Cam s-cam / bushing system. Extreme Cam Kits are manufactured in the USA. It all starts with using American-made steel and precision manufacturing processes. The difference is clear.