The aFe MACHForce XP Cat-Back Exhaust is perfect for Toyota Tundra owners who want to enhance their truck's performance and sound. Whether you're hitting the off - road trails or cruising on the highway, this exhaust system will give your Tundra a new edge. It's designed for truck enthusiasts who demand more from their vehicles. The system is made of 4 - inch 409 stainless steel tubing and comes with a 24 - inch long muffler. It uses factory mounting locations for easy installation and is built to last in various driving conditions.