GM Duramax 6.6L Cat & DPF Delete Pipe (2011-2015)
Type: Delete Pipe | Fits: GM Duramax
Free up exhaust flow and support off-road performance. This 4β Stainless DPF Delete Pipe is built for 2011β2015 Chevrolet Silverado and GMC Sierra 2500/3500HD trucks equipped with the 6.6L Duramax. Designed for competition and off-road applications, it replaces the factory catalytic converter and DPF assembly to reduce restriction and improve exhaust flow.
For off-road/competition use only. Race tuning is required.
The factory DPF and catalytic converter system can create exhaust backpressure that limits performance potential. This straight-through 4β stainless pipe removes those components to support smoother exhaust flow and reduced exhaust gas temperatures (EGTs) in properly tuned applications. Built with OE-style hangers, it provides secure mounting once installed.
Vehicle Fitment
- 2011 Chevrolet Silverado 2500HD / 3500HD β 6.6L Duramax
- 2011 GMC Sierra 2500HD / 3500HD β 6.6L Duramax
- 2012 Chevrolet Silverado 2500HD / 3500HD β 6.6L Duramax
- 2012 GMC Sierra 2500HD / 3500HD β 6.6L Duramax
- 2013 Chevrolet Silverado 2500HD / 3500HD β 6.6L Duramax
- 2013 GMC Sierra 2500HD / 3500HD β 6.6L Duramax
- 2014 Chevrolet Silverado 2500HD / 3500HD β 6.6L Duramax
- 2014 GMC Sierra 2500HD / 3500HD β 6.6L Duramax
- 2015 Chevrolet Silverado 2500HD / 3500HD β 6.6L Duramax (except late 2015 3-bolt flange models)
- 2015 GMC Sierra 2500HD / 3500HD β 6.6L Duramax (except late 2015 3-bolt flange models)
Not compatible with Cab & Chassis models.
Technical Specifications
| Product Type | DPF Delete Pipe |
| Tubing Diameter | 4β |
| Material | Stainless Steel |
| Design | Straight Pipe, Bung-Free |
| Mounting | OE-Style Hangers |
| Application | Off-Road / Competition Use Only |
| Tuning Requirement | Race Tuning Required |
| Optional Add-On | 4β Muffler (Sold Separately) |
Whatβs Included
- 4β stainless steel DPF delete pipe
- OE-style hangers
Features
- Replaces factory catalytic converter and DPF assembly
- 4β stainless construction for long-term durability
- Straight-through design for reduced exhaust restriction
- Bung-free layout for maximum flow in race applications
- Factory-style hangers for secure alignment
Benefits
- Supports increased horsepower and torque in tuned setups
- Helps reduce backpressure and lower EGTs
- Improves throttle response in performance applications
- Durable stainless design built for demanding use
- Direct replacement for restrictive OEM components
Installation Notes
- Requires cutting/modification of the factory exhaust system.
- Professional race tuning is mandatory to prevent fault codes.
- Optional 4β muffler available for sound control.
- Professional installation recommended.
- Verify local laws and regulations before purchasing.
Important Notes:
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Important Notices
- OffβRoad Use Only
Products sold by JS Speed are intended for offβroad use and may be illegal on public roads where emissions or pollutionβcontrol laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicleβs factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
