Gunite is a well-established manufacturer of brake drums, rotors, hubs, and slack adjusters for heavy-duty trucks and trailers. Their cast iron brake drums and precision-machined hubs are designed to meet FMCSA stopping distance standards and are widely used on Peterbilt trucks across vocational and over-the-road applications. Gunite parts are a dependable aftermarket option when replacing worn brake and wheel end components, offering broad fitment across Peterbilt model years and axle configurations.