2007.5-2010 Duramax 4" Downpipe Back Exhaust System w/ Muffler (431010 / 432010)

The 431010 / 432010 is a 4" Downpipe Back Exhaust system for the 2007.5-2010 Duramax 6.6L. It replaces your restrictive OE exhaust system from the downpipe back with a 4" mandrel-bent exhaust system. This kit includes a muffler and is designed for street applications. Just like all of Flo-Pro exhaust kits, it will come with all the required clamps, pre-weld contour bent hangers, and stronger flanges to help you cruise through the installation process. This exhaust not only sounds great, but also improves torque, mileage, and throttle response!

Part Number: 431010 / 432010

• 4" Downpipe Back Single Exhaust system.
• Includes Muffler
• Aluminized Steel & Stainless Steel Option
• Single Side Exit
• Easy Install - Mounts to OE Hangers

Click Here For Instructions

Don't see your question? Ask us anything about this product.

• ?

  Does it have the bongs in it for 2 sensors that are in the exhaust. ?

  This is meant to replace the factory exhaust when deleting the truck, and does not have those sensor bungs.

• ?

  I have a 2010 gmc duramax that's straight piped now and it's starting the have leaks, with the muffler in this kit (as truck is fully deleted) will it be OK with out the def? Is the muffler just to keep it a bit less noisy? That would be nice.

  The muffler will keep noise down and clean up thngs for you with a fully removed DPF!