- Upgrade your semi truck's performance and style with our premium Dynaflex Exhaust 6 Inch systems, designed to deliver unparalleled efficiency and a robust sound. Our extensive range includes the 6 Inch Peterbilt 359/379/389G 55" Full Diameter Exhaust Kit, perfect for enhancing your truck's power and aesthetic. For those driving a Peterbilt 379 from 1987-2003, we offer the 6 Inch OEM Style Elbow Exhaust Kit, ensuring a perfect fit and superior performance. If you own a Peterbilt 379 from 2003-2006, our 6 Inch OEM Style Elbow Exhaust Kit and 6 Inch 90 Degree Elbow Exhaust Kits are tailored to meet your needs, providing optimal exhaust flow and durability. Each kit is meticulously crafted to meet the highest standards, ensuring longevity and reliability. Whether you're looking for a 6 Inch 90 Degree Peterbilt 379 1987-2003 Exhaust Kit or a 6 Inch 90 Degree Peterbilt 379 2003-2006 Exhaust Kit, we have the perfect solution to keep your truck running smoothly and efficiently. Explore our collection today and experience the difference a high-quality exhaust system can make. Additionally, we offer a variety of exhaust accessories, including exhaust clamps, flexible exhaust pipes, and exhaust flex pipes, to ensure a seamless installation. Our products are compatible with a range of trucks, including the Ford F650 and Ford Powerstroke 6.0, and we even provide conversion tools like 33mm to inches for precise measurements. Don't forget to check out our 57 inch tail lights and Walker exhaust options for a complete upgrade. Enhance your Peterbilt 567 with our top-of-the-line exhaust systems and accessories. Take action now and transform your truck's performance and style!