Ensuring Expertise Built In™, the OTR Fleet Pro Brake Shoe Kit is engineered to provide distinct stopping power through many speed variations, pressures, and temperatures. This brake shoe kit not only meets, but also exceeds all FMVSS121 brake standard requirements for 20K pound axles (165 AL Factor). Its first-class drum compatibility significantly lowers any potential maintenance and downtime. This brake shoe kit is among the highest performing premium-grade blocks on the market. Gain outstanding fade and recovery characteristics with this replacement brake shoe kit. FleetPride is your First Click in Heavy Duty®.