With Expertise Built In™, the OTR New Linehaul Brake Shoe Kit is designed with premium friction material formulated and tested to exceed FMVSS 121 Reduced Stopping Distance (RSD) requirements. Our quality friction material has been third-party certified to exceed all dynamometer and on-vehicle performance mandates (AL Factor 165). These replacement heavy duty steel brake shoes are heat-treated, hardened to precise standards and then powder coated to withstand the harshest conditions. The 23,000 GAWR grade friction material inside the brake shoe successfully executes in demanding applications. With your specific application, this heavy duty semi truck and trailer part provides brake drum compatibility with high performance and durability you can rely on. FleetPride is your First Click in Heavy Duty®.