Diamond Eye KIT 4in Catback MRP Single w/ TDP AL 04-05 Chevy/GMC 6.6L Duramax 2500/3500

This is the Diamond Eye 4-inch aluminized cat-back exhaust system for your 2004-2005 Chevrolet Silverado 2500 HD or 3500, and the GMC Sierra equivalent with the 6.6L Duramax LLY engine. This kit replaces your factory exhaust from the catalytic converter back, aiming to improve exhaust flow and provide a deeper tone.

Diamond Eye builds these systems using aluminized steel, which offers a good balance of durability and cost for exhaust components. They use CNC mandrel bending to ensure consistent pipe diameters throughout the system, which helps maintain smooth airflow. This particular kit is configured as a single exit system with a muffler, designed to be a direct replacement for your stock exhaust. The 4-inch diameter is a common upgrade for Duramax trucks to help the engine breathe a little easier.

This kit is designed to fit all cab and bed lengths for the specified years. You'll want to refer to the manufacturer's installation instructions for any specific details regarding mounting hardware or procedures, as this kit is designed as a bolt-on replacement.