Diamond Eye KIT 4in Turbo Back Single SS DDG2X4-HX40 89-93 Dodge 5.9L Cummins 2500/3500

If you're looking to get more out of your 1989-1993 Dodge 5.9L Cummins 2500 or 3500, this 4-inch turbo back exhaust system from Diamond Eye Performance is a solid choice. This kit is designed to replace your entire factory exhaust from the turbocharger back, offering a significant upgrade in flow and durability. It's built with stainless steel, which means it'll stand up better to rust and corrosion compared to aluminized steel, especially important for trucks that see a lot of road salt or moisture.

Diamond Eye uses CNC mandrel bending for their tubing. This process ensures that the pipe's diameter stays consistent throughout the bend, which is crucial for maintaining exhaust gas velocity and improving flow. A smoother, less restrictive path for exhaust gases can lead to a deeper exhaust tone and potentially improved engine performance. This particular kit is set up for a single exit and is designed to work with HX40 style turbochargers, often chosen by Cummins owners looking for more power. The kit includes all the necessary components to go from your turbo all the way to the rear bumper, making it a comprehensive replacement.

When installing a turbo back system, you'll typically find it's a bolt-on affair, though you might need to unbolt the downpipe from the turbo itself. Having a helper can make maneuvering the longer sections of pipe easier. This system is not CARB approved, so it cannot be shipped to California. For those outside of California, it's a well-made upgrade that can make a noticeable difference in how your Cummins runs and sounds.