With Expertise Built In™, the OTR Linehaul Brake Shoe Kit being designed with premium friction material formulated and tested to exceed FMVSS 121 Reduced Stopping Distance (RSD) requirements. This semi truck and trailer part has quality friction material that has been third-party certified to exceed all dynamometer and on-vehicle performance mandates (AL Factor 165). These heavy duty steel brake shoes are heat-treated, hardened to precise standards and then powder coated to withstand the harshest conditions. The 20,000 GAWR grade friction material inside the brake shoe successfully executes in demanding applications. With your specific application, this heavy duty brake shoe replacement provides high performance and durability with brake drum compatibility you can depend on. FleetPride is your First Click in Heavy Duty®.