Mbrp Universal 16 Inch Muffler Repack Kit The Mbrp Universal 16 Inch Muffler Repack Kit restores the distinctive exhaust note of the Mbrp billet muffler. Tailored specifically for the Mbrp 4 inch by 16 inch billet models, this kit refreshes the worn packing material, ensuring optimal tone and performance. It offers a practical solution to maintain sound quality and enhance the longevity of the muffler. Features: For use on 4 x 16 Billet Muffler Sold as a kit