The exhaust tips of a diesel truck have a similar function to the muffler tips of a gasoline vehicle. It routes the exhaust gasses at the vehicle's rear, while serving as a cosmetic purpose on ...

Even cooler were the black "Midnight Express" trucks. Another extremely cool and innovative setup. The big oval in the center of the diffuser that looks like an exhaust tip expels hot air to cool ...

The company's three-inch system is meant to exit just ahead of the rear wheel for a cool 1990s sport-truck-style look with dual stainless tips completing the appearance. The entire exhaust is T ...