Diamond Eye KIT 4in DPF-BACK Single SS: 11-12 CHEVY 6.6L 2500/350

This is the Diamond Eye 4-inch DPF-back exhaust system kit for your 2011-2012 Chevrolet Silverado 2500 HD or 3500 HD, and your 2011-2012 GMC Sierra 2500 HD or 3500 HD. This kit includes the necessary components to replace your factory exhaust system from the Diesel Particulate Filter (DPF) rearward, giving your Duramax diesel a more direct path for exhaust gases to exit.

Diamond Eye builds these systems using 409 stainless steel, which is known for its good resistance to corrosion and heat, making it a solid choice for exhaust components that are exposed to the elements. The 4-inch diameter tubing is designed to handle the exhaust flow from the 6.6L Duramax engine. The mandrel bending process used by Diamond Eye ensures that the tubing maintains a consistent diameter throughout the bends, which helps to improve exhaust flow compared to crush bends. This can lead to a slightly improved throttle response and a deeper exhaust tone.

This kit is designed as a direct replacement for your factory exhaust from the DPF back. Installation typically involves unbolting the factory system and bolting in the new components. Always refer to the manufacturer's installation instructions for specific details and any required tools. Please note that this system is not CARB approved and cannot be shipped to California.