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4" DPF & Cat Delete Race Exhaust Pipe | 2007-2009 Dodge Ram 2500 & 3500 6.7L Cummins

Unlock the legendary reliability, deep inline-six rumble, and unrestricted airflow of your early 6.7L Cummins. The SPEtuner 4"/5" DPF & Cat Delete Race Pipe is a heavy-duty mechanical upgrade custom-engineered for 2007, 2008, and 2009 Dodge Ram 2500 and 3500 pickup trucks.

The first-generation emissions equipment on the early 6.7L platforms is notorious for soot accumulation, dragging down your fuel economy with constant DPF regeneration cycles, and causing expensive sensor-related breakdowns. This premium mandrel-bent straight pipe drops directly into place of your heavy factory catalytic converter and Diesel Particulate Filter (DPF) assemblies—slashing backpressure, lowering temperatures, and helping your Holset turbo spool up faster.

Key Features

• Zero Exhaust Backpressure: Completely replaces the restrictive DPF and catalytic converter "cork," providing a smooth, high-velocity 4-inch path for spent gases to escape.
• Eliminate Emissions Downtime: Permanently bypass temperamental exhaust temperature/pressure sensors and clogged filters that constantly threaten to trip your truck into "Reduced Engine Power" limp mode.
• Drastically Lowers EGTs: Getting hot exhaust out of the engine bay quickly drops Exhaust Gas Temperatures (EGTs), protecting your cylinders, head gaskets, and variable-geometry turbo (VGT) under heavy towing loads.
• Quicker Turbo Spool-Up: Removing downstream exhaust restrictions minimizes turbo lag significantly, giving you sharper throttle response and immediate low-end torque.
• Pure Cummins Exhaust Sound: Unleashes that signature, deep, and throaty 6.7L inline-six diesel exhaust growl without annoying or excessive cabin drone during highway cruising.
• Boosted Fuel Mileage (MPG): Halting active DPF regenerations saves massive amounts of raw diesel over time and increases overall engine operating efficiency.

Materials and Construction Features

This DPF Delete Kit is made of T-409 stainless steel, which has excellent durability and corrosion resistance. Although compared with T-304 stainless steel, it is still magnetic, so keep this in mind when testing. The kit has a 2mm thick pipe wall and is available in 4" and 5" inlet diameters to meet different modification needs.

Specifications

Material: T-409 Stainless Steel

Thickness: 2mm

Inlet Diameter: 4" and 5"

Applicable Models: 2007-2009 Dodge Ram 2500/3500

Package Contents

In the package you receive, you will find

• 2 Exhaust Pipes
• 2 Clips
• 1 Hook
• 3 Bolts

You can refer to the pictures on the page to see the actual package contents to ensure that all components are complete.

Installation Instructions

The installation process is relatively simple and can be completed in a driveway or garage using basic hand tools and takes about 1 hour. If you have a car lift, the process will be faster. For some short wheelbase configurations, you may need to make some cuts. All the clips, hooks and hardware required for installation are included, but sometimes it is necessary to reuse some original hardware.

Advantages and precautions of DPF deletion

Improved fuel efficiency and performance

You will find that after removing the DPF, the exhaust flow is smoother and the back pressure is reduced, which in turn provides higher engine output power and better fuel economy.

Noise and environmental impact

It should be noted that removing the muffler may cause more noise. If you like a quiet driving experience, you may consider keeping the muffler. In addition, please remember that DPF deletion affects exhaust emission standards. It is recommended to understand and comply with relevant environmental regulations before installation.

Compliance and legal liability

Off-road use statement

This product is designed for off-road use and is not suitable for public road use. Make sure you follow local regulations and emission standards when using it to avoid unnecessary legal issues.

Importance of local regulatory checks

Before purchasing and installing, it is recommended that you check local legal requirements to ensure that your vehicle still meets the emission and compliance standards in your region after using this product.

Summary

This 6.7 Cummins DPF Delete Kit provides you with a significant power increase and fuel efficiency improvement, making it an ideal choice to enhance your driving experience. Through the above page structure and content planning, you can get comprehensive product information, detailed installation instructions, real usage feedback and legal and compliance tips to help you make a more informed purchase decision. 

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Fitment

This kit features a 100% direct-fit alignment utilizing your truck's factory chassis hanger locations. No complex welding or fabrication required:

• 2007 Dodge Ram 2500 / 3500 (6.7L Cummins Diesel)
• 2008 Dodge Ram 2500 / 3500 (6.7L Cummins Diesel)
• 2009 Dodge Ram 2500 / 3500 (6.7L Cummins Diesel)

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FAQ

Q1: What does the "DPF race pipe" mean?
A1: "DPF race pipe“also called "DPF Delete Pipe", only removes the part of DPF and keeps other parts.

Q2: What does "DP-back/Downpipe-back" mean?
A2: This means that the exhaust system runs from the downpipe all the way to the end of the exhaust pipe, replacing everything from the downpipe outlet back. This typically includes the mid-pipe, catalytic converter (if present), and muffler.

Q3: What does "Turbo-back" mean?
A3: This means that the exhaust system runs from the turbocharger all the way to the end of the exhaust pipe, replacing everything from the turbocharger outlet back. This typically includes the downpipe, mid-pipe, catalytic converter (if present), muffler, and tailpipe.

Q4: What is your DPF made from? Stainless steel or aluminum?
A4: They are made of 409 stainless steel.

Q5: Do your DPF deletion kits need to purchase additional parts?
A5: Our DPF delete kit comes with all the parts to complete the DPF deletion, normally, there is no need to purchase anything else.

Q6: Does your Dp-back pipe can work with stock parts?
A6: Yes, our Dp-back pipe can fit perfectly with the stock Downpipe and stock bolts.

Q7: Why do some of your dpf delete kits not work on cab and chassis models?
A7: The Cab & Chassis has a relatively longer chassis and requires a tube specifically designed to fit the Cab & Chassis model. We mention Cab & Chassis in the title of our products for Cab & Chassis models, so you can check for yourself. For further assistance, you can contact our customer service. 

Q8: Is additional tuning required?
A8: Yes, after removing the DPF, you need to use a tuning device that supports DPF deletion to avoid the check engine light or diagnostic trouble codes.

Q9: Will the noise increase after installation?
A9: Removing the muffler will increase the engine noise level. Please decide whether to keep the muffler based on your personal needs.