The Single or Dual Muffler Replacement Kit is a practical solution for improving the performance and fuel efficiency of your Kenworth truck. Made with aluminized 5" KW Aero Cab Kit, this kit is designed to fit most Kenworth makes and models. With no cutting or modifying necessary, it can easily be installed without hassle. The kit is designed to hide behind the factory Aero Shield and bolt onto the brackets, ensuring a seamless and professional look. Additionally, the kit is sold as a complete package, making it convenient for customers. Please note that some items may require oversize or freight shipping, and our team will contact you to provide a shipping estimate.