Nissan Cummins 5.0L Downpipe Back Exhaust (2016-2018)
Type: Downpipe-Back Exhaust
Free up your Titan’s airflow and let the 5.0L Cummins perform. This 4-inch downpipe-back race exhaust system is designed for 2016–2018 Nissan Titan XD trucks equipped with the 5.0L Cummins diesel. By replacing the restrictive factory exhaust, it improves exhaust efficiency, enhances throttle response, and delivers a deeper, more aggressive exhaust tone for off-road applications.
For off-road and competition use only.
The factory exhaust system can limit airflow and overall efficiency, especially under load. This 4-inch mandrel-bent downpipe-back system increases exhaust volume capacity and reduces backpressure, supporting improved torque delivery and more responsive acceleration. Built with durable materials and precision-formed bends, it is engineered for performance-oriented Titan XD builds.
Vehicle Fitment
- 2016–2018 Nissan Titan XD
- 5.0L Cummins Turbo Diesel
Technical Specifications
| Diameter | 4” Mandrel-Bent Tubing |
| Material Options | 16-Gauge Aluminized Steel or T409 Stainless Steel |
| Configuration | Downpipe-Back, Single Side Exit |
| Finish | Natural or Polished (Material Dependent) |
| Approximate Weight | 61 lbs |
| Intended Use | Off-Road / Competition |
Features
- 4-inch free-flowing downpipe-back configuration
- Mandrel-bent piping to maintain consistent internal diameter
- Available in durable aluminized steel or corrosion-resistant T409 stainless steel
- Pre-welded flanges for simplified installation
- High-quality band clamps for secure, leak-resistant connections
- OE-style hangers for proper alignment and stability
- Clean, unrestricted design without sensor bungs
- Single side exit layout for strong visual presence and sound
Benefits
- Improved airflow for stronger throttle response
- Supports lower EGTs during towing or heavy load conditions
- More consistent power delivery across the RPM range
- Enhanced exhaust tone with a deeper, performance-driven sound
- Durable construction built to handle high heat and demanding use
Installation & Important Notes
- Direct bolt-on system—no cutting or welding required.
- Designed to reuse factory hanger locations for proper fitment.
- Professional installation recommended.
- Proper aftermarket tuning may be required for optimal performance.
- For off-road use only. Verify local and federal regulations before installation.
Important Notes:
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Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control 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 vehicle’s 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.
