Equip your semi to be Ready for the Road Ahead™, with the OTR 391mm x 86.5mm Brake Rotor, a crucial element to offer smooth front and rear brake performance. Due to its partnership with the brake pads and caliper, this replacement rotor is able to create a compression mechanism that slows a vehicle once the brake pedal is pushed. Constructed with precision standards to remove defects and provide long-term reliability. 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®.