You may be the GM Duramax owner that has made all the engine and suspension upgrades to make your truck the powerhouse it deserves to be. However, all this investment into your power and performance can be underwhelming with the weak factory exhaust system. Magnaflow understands your pain and has you covered with all the exhaust upgrades that you need. GM Duramax Magnaflow Exhausts are all precision manufactured for an OEM-style fit and all offer their own unique benefits and aesthetic features. If you are looking for aggressive sounds, you cannot go wrong with a Magnaflow exhaust. Every one of their exhaust systems has their signature exhaust tone with different options for volume. With all they have to offer, finding a place to start your research can be daunting, so take some time to learn about their top exhaust upgrades that we carry at Alligator Performance.

Top 2001-2004 Duramax Magnaflow Exhaust Kits

2001-2004 GM Duramax MagnaFlow Custom Builder Pipe Series Downpipe-Back

There is a beast hidden inside your GM Duramax and Magnaflow wants to unleash it for you. Aggressive sounding exhausts can be found all over for this truck, but none of them can recreate the signature Magnaflow exhaust tone that strikes fear in the heart of other weaker exhausts. Their 2001-2004 GM Duramax MagnaFlow Custom Builder Pipe Series Downpipe-Back is the prime example of the magic that Magnaflow engineers are busy making. This downpipe-back utters a throaty and powerful sound that will give you chills the first time you hear it on your build. From inside your cab, the sound is more moderate, but aggressive enough for you to get the idea of what others are hearing from the outside. Everyone else hears the roar of an aggressive downpipe-back that exudes confidence. It hard not to feel excited every time you turn the key and hear those sweet sounds. If all this sounds great, but you are worrying it might not fit your GM Duramax, you can rest assured knowing each kit comes with all the components needed to meet the fitment requirements of any build.

2001-2004 GM Duramax MagnaFlow Custom Builder Pipe Series Downpipe-Back Features:
  • 4" mandrel bent stainless steel main piping
  • Moderate interior sound and Aggressive exterior sound
  • Features all the components necessary to enable flexible installation options to meet the fitment requirements
  • Limited Lifetime Warranty

2001-2004 GM Duramax MagnaFlow Performance Exhaust Diesel Turbo Downpipe

If you are not as hung up on the sounds of your exhaust and needing a huge boost, then you will probably want to go with an exhaust upgrade that is more focused on improving performance. Give your GM Duramax some help with flow characteristics and overall exhaust performance with their 2001-2004 GM Duramax MagnaFlow Performance Exhaust Diesel Turbo Downpipe. This turbo downpipe connects near your turbocharger with a perfect fit. The fitment is made so precise with Magnaflow's CNC robotic manufacturing techniques. To make exhaust flow more efficient, each downpipe is weight-optimized. You will see improvement in flow dynamics and an increase in the amount of exhaust that can be evacuated at a time. Going with this downpipe is making a long-term investment into your exhaust performance. Each one features a 100% durable, corrosion resistant stainless steel construction and is backed by Magnaflow's limited lifetime warranty.

2001-2004 GM Duramax MagnaFlow Performance Exhaust Diesel Turbo Downpipe Features:
  • 3" diameter mandrel bent stainless steel pipe designed to connect near your turbocharger
  • Durable stainless steel construction and CNC precision robotic manufacturing techniques guarantee reliable pipe performance
  • Direct-fit design facilitates do-it-yourself installation by utilizing the OEM exhausts break locations
  • Limited Lifetime Warranty

Last Thoughts:

Replacing your entire exhaust system can be an expensive endeavor, so if you are having trouble committing to the investment, go with the 2001-2004 GM Duramax MagnaFlow Performance Exhaust Diesel Turbo Downpipe to at least improve your exhaust performance and optimize exhaust flow. Making this upgrade goes a long way into changing the flow dynamics and overall durability of your exhaust. Of course, if you can afford a full exhaust system upgrade, that is always the way to go. You will not be disappointed by the 2001-2004 GM Duramax MagnaFlow Custom Builder Pipe Series Downpipe-Back and its display of Magnaflow's signature deep exhaust tone.

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