4″ Exhaust Kit for 6.7L Cummins – 409SS
Unleash True Sound and Performance
4″ exhaust system for 6.7L Cummins improves airflow, reduces backpressure, and delivers a deep, aggressive diesel tone. As a result, your truck produces stronger horsepower, increased torque, and quicker throttle response.
Whether you tow, daily drive, or push your truck harder, this system helps lower exhaust gas temperatures. In addition, it delivers stronger pulls under load and a bold Cummins exhaust note every time you step on the throttle.
High-Flow 4 Inch Design
Mandrel-bent 4 inch piping allows exhaust gases to move smoothly from turbo to tailpipe. Because of this, the system removes factory restrictions and improves overall efficiency.
At the same time, it maintains a strong balance between sound, performance, and drivability for Ram Cummins trucks.
Durable Construction for Long-Term Use
This system uses high-quality 409 stainless steel to handle daily driving, heavy towing, and performance use. As a result, it holds up under stress while maintaining consistent performance.
Precision welds and heavy-duty hangers keep everything secure and properly aligned over time.
Easy Bolt-On Installation
This system installs using a bolt-together design with basic hand tools. Therefore, you do not need welding. All clamps and hardware come included, so you get a clean, factory-style fit.
Once installed, you will notice improved exhaust flow, stronger throttle response, and a more aggressive exhaust tone.
Important Notes
- This product is intended for off-road or competition use only
- DPF removal is required for installation
- Custom tuning is required for proper operation
- Without proper tuning, the truck may trigger check engine lights or lose performance
- Not emissions compliant in many areas, so verify local regulations before installation
