GM Duramax 6.6L Cat & DPF Delete Pipe (2015.5-2016)
Type: Delete Pipe | Fits: GM Duramax
Free up exhaust flow and support performance-focused builds. This 4β Stainless Steel DPF Delete Race Pipe is engineered for 2015.5β2016 GMC Sierra and Chevy Silverado 2500/3500HD trucks equipped with the 6.6L Duramax and OEM-style 3-bolt turbo flange. Designed for off-road and competition applications, this pipe replaces the factory catalytic converter and DPF assembly to reduce exhaust restriction and backpressure.
For off-road/competition use only. Proper tuning is required.
The factory DPF and catalytic converter system can create significant exhaust restriction. This 4β stainless race pipe replaces those components with a straight-through design, supporting improved exhaust flow and reduced backpressure in performance applications. Built with OE-style hangers and durable stainless construction, it provides a secure, direct-fit installation on compatible trucks.
Vehicle Fitment
- 2015.5β2016 GMC Sierra 2500HD/3500HD β 6.6L Duramax (3-bolt flange models)
- 2015.5β2016 Chevy Silverado 2500HD/3500HD β 6.6L Duramax (3-bolt flange models)
Not compatible with Cab & Chassis models.
Designed specifically for OEM-style 3-bolt turbo flange configurations.
Technical Specifications
| Product Type | DPF Delete Race Pipe |
| Tubing Diameter | 4β |
| Material | High-Grade Stainless Steel |
| Hangers | OE-Style, Pre-Welded |
| Design | Bung-Free, Straight-Through |
| Application | Off-Road / Competition Use Only |
Whatβs Included
- 4β stainless steel DPF delete race pipe
- Pre-welded OE-style hangers
- Required mounting hardware
Features
- Replaces catalytic converter and DPF assembly
- 4β stainless steel construction for durability
- OE-style hangers for factory-style alignment
- Bung-free design for unrestricted exhaust flow
- Optional 4β muffler available for sound control (sold separately)
Benefits
- Supports increased horsepower and torque in properly tuned setups
- Helps reduce exhaust gas temperatures (EGTs) under load
- Decreases backpressure for improved exhaust flow
- Durable stainless design for long-term use in performance builds
- Direct-fit installation using factory-style mounting points
Installation Notes
- Requires removal of factory DPF and catalytic converter components.
- Proper off-road tuning is required for operation.
- 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.
