Update your semi with smooth front and rear brake performance, with the OTR 308mm x 55.4mm Brake Rotor that ensures you're Ready for the Road Ahead™. This replacement rotor pairs with the brake pads and caliper to create a compression mechanism that slows a vehicle once the brake pedal is pushed. Engineered with precision standards to remove imperfections and provide long-term durability. OTR understands what it takes to repair and maintain Class 6-8 trucks, so they deliver solutions, making your job easier and more efficient. OTR warranties are comparable to or better than OE and top brands. All heavy duty truck parts offer the same form, function, and fit as the OE replacement parts. FleetPride is your First Click in Heavy Duty®.