CAT/DPF Delete Stock Exhaust Package for Duramax 6.6LMM 2007.5-10 | GearboxZ Tuner & Flo~Pro 4" Downpipe Back Exhaust System

In stock
Special Price $689.00 was $714.00

An Affordable Exhaust Replacement

A package with affordability in mind combines a stock level tuning module from Gearboxz that will disable regen and your EGR allowing you to delete the CAT, DPF and EGR. The 4" exhaust from Flo~Pro ensures that you will have smooth flowing air for years to come. This mean gains in horsepower, torque and mileage.

NOTE: Not suitable for Cab & Chassis Models

Gearbox Z DPF-R 4.0 Stock DPF Delete Module

The DPF-R is a simple module plugs in to your ODB2 port and reprograms your Duramax LMM truck for a DPF delete. It will disable regen, and allow you to replace the Diesel Particulate Filter with a straight pipe or a full exhaust. The DPF-R is extremely easy to use, and takes only about 5 minutes for installation. The EGR will also automatically be disabled, allowing you to block it off or delete it completely. After installing the DPF-R, your truck will not throw any codes related to the DPF, CAT, or EGR.


  • Used as a temporary or permanent solution for deleting the DPF, CAT, & EGR.
  • Voice Prompted menu system
  • Reads and clears Diagnostic Trouble Codes
  • Plugs in to the ODB2 Port, Quick Installation
  • Fully Reversible
  • Disables Regen / Disable EGR system

Flo~Pro 4" Downpipe Back Exhaust System

With the CAT/DPF delete exhaust system from Flo~Pro, you're DPF worries are over. When combined with an appropriate tuning module this exhaust system will have your Duramax LMM Diesel breathing freely and running smoothly. Expect increased mileage, longer intervals between oil changes and an engine that lasts longer. This exhaust is NOT available with sensor bungs, but most tuners do not require them.


  • 4" Mandrel Bends
  • OE Style Clamps and Hangers
  • Available with or without muffler
  • Choose from Aluminized or Stainless Steel


  • No More Regen Cycles
  • Increased Flow
  • Increased MPG
  • Improved Horsepower
  • Improved Torque

More Information
Diesel Engine Duramax 6.6L LMM 2007.5-10
OEM Make GMC, Chevrolet
OEM Model Sierra/Denali 2500, Sierra/Denali 3500, Silverado 2500HD, Silverado 3500HD
Specific Year N/A
Package SKU No
Brand Gearbox Z
Transmission Automatic, Manual
Drive N/A
Supports EGR Racing Kit? Yes
Exhaust Diameter No
Material No
Exhaust Type N/A
Exhaust Size No
Bungs No Bungs
Instructions No

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Exclusive Freedom Diesel Performance Discounts

Save $45 On Any Order Over $699 w/ Coupon Code SAVE45QUICK


All of our packages include multiple related items at a special package discount. Our packages are designed to make your life easier, usually including all the parts you need to achieve a specific modification.

Price Matching Beating!

We want to make sure you get the best deal possible on your parts. We do our best to ensure we have the best prices in the industy, however, if you find an item cheaper, let us know and we will happily match or beat the price.

Discounts For Shops & Dealers

If you are an installation shop or dealer, give us a call or email for details on our dealer program. We are able to discount most items for shops.

Phone: 855-432-4733 9 AM - 6 PM EST Monday - Friday
Email: [email protected]

We Strive For Extremely Quick Shipping.

Whether you need a part to fix a downed truck, a performance part to get the edge on your competitors on race day, or just something to improve the look or functionality of your vehicle; freedom diesel performance you covered!

We understand the only reason you are purchasing a part, is because you really need it or really want it. We do everything in our power to ensure you get the purchased item as soon as possible.

*** Orders placed before 2 PM Est - Usually ship the same day. ***

Estimated Delivery Times:

- Tuners / Programmers by themselves - 2 to 3 Business Days

- Performance / Race Packages - 2 to 5 Business Days

- General Diesel Performance Parts - 2 to 5 Business Days 

- Lighting, Accessories, Etc - 2 to 7 Business Days 

(Alaska / Hawaii Add 3 Business Days)

Easy Return / Exchange Process

If for some reason, you order the incorrect product, or do not need the product prior to using it, we will accept it back as a return for refund or exchange up to 30 days from delivery. Must be in new, un-used condition with original packaging.

Due to credit card processing fees, shipping, and wear and tear to the packaging often occuring during shipping, returns may be subject to a 20% restocking fee.

If you need to setup a return or exchange, please contact us for an RMA#

Warranty Process

If the product you receive is damaged or defective, please contact us immediately for assistance. In most cases, we can send you a return label and fix the problem very quickly.