Nissan Cummins 5.0L Downpipe Back Exhaust (2016-2018)

This 4-inch Downpipe-Back Race Exhaust System for the 2016–2018 Nissan Titan XD 5.0L Cummins is designed to improve exhaust flow, reduce backpressure, and support better diesel engine performance. By replacing the restrictive factory exhaust, the system helps improve throttle response, increase towing torque, and deliver a deeper exhaust tone while maintaining reliable daily drivability.

Built for diesel truck owners looking for improved airflow, performance efficiency, and a straightforward bolt-on upgrade, it’s a practical solution for both work and performance use.

Vehicle Compatibility

Years: 2016, 2017, 2018
Make: Nissan
Model: Titan XD
Engine: 5.0L Cummins Turbo Diesel (diesel)
Body: Pickup

Technical Specifications

• System Configuration: True downpipe-back, single side exit.
• Tube Diameter: 4-inch mandrel-bent.
• Primary Material: T409 Stainless Steel.
• Finish: Natural (as shown with T409).

Engineered for a Perfect, High-Flow Fit

• Downpipe-Back system: Designed as a direct replacement for the factory exhaust. Fits OEM mounting points and installs without custom fabrication.
• Full 4-Inch / 5-inch Diameter: Large-diameter piping maintains consistent internal diameter through bends to reduce restriction and improve exhaust flow.
• Premium Material Choice: Built from T409 stainless steel for strength, heat resistance, and long-term corrosion protection in daily-use conditions.
• Precision Bolt-On Design: Includes pre-welded flanges, properly contoured mandrel bends, and OE-style hangers for accurate alignment. No cutting or welding required.
• Clean, Single-Side Exit: Optimized exhaust routing supports efficient scavenging and consistent flow while maintaining a clean, functional exit position.
• Complete Exhaust Kit: Comes with clamps, preformed hangers and required mounting hardware for a secure, leak-free install.