4''/5'' Stainless Steel Diesel Performance Muffler | for Cummins, Duramax, Powerstroke
Refine your truck’s exhaust tone while maintaining strong performance with Diesel Performance Muffler. Designed for serious diesel enthusiasts, this straight-through muffler enhances exhaust flow, deepens sound, and reduces unwanted interior drone — without sacrificing power.
Available in 4-inch and 5-inch inlet diameters, you can select the ideal size for your build, whether it’s a daily-driven tow rig or a high-output performance truck.
Fitment
Engineered for universal diesel exhaust applications, compatible with:
(Compatible with custom exhaust systems using 4.0'' or 5.0'' piping.)
Inlet Diameter Options:
Key Performance Features
✔ Straight-Through Flow Path
The internal perforated core allows exhaust gases to flow freely with minimal restriction. This reduces backpressure and supports improved throttle response and overall engine efficiency.
✔ Deep, Throaty Diesel Sound
Enhances your truck’s exhaust note with a rich, aggressive tone — without excessive rasp. Ideal for drivers who want a powerful sound without overwhelming cabin resonance.
✔ Reduced Interior Drone
Advanced internal stainless steel mesh and high-temperature fiberglass packing help absorb harsh frequencies and unwanted interior resonance, delivering a more controlled sound at cruising speeds.
✔ Non-Directional Design
Fully reversible construction allows installation in either direction, making fitment simple for custom exhaust setups.
✔ Durable T409 Stainless Steel Construction
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Corrosion-resistant T409 stainless steel
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Built to withstand heat cycles and harsh diesel conditions
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Long-lasting performance in towing and high-load applications
4'' vs 5'' Muffler Comparison
4-Inch Muffler
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Ideal for stock to mildly tuned trucks
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Balanced tone with reduced drone
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Excellent for daily driving and towing
5-Inch Muffler
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Deeper, more aggressive exhaust note
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Best for high-performance builds
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Increased airflow capacity
Choose 4'' for controlled refinement, choose 5'' for bold presence and maximum flow.
Performance Benefits
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Reduced exhaust backpressure
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Improved turbo spool characteristics
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Enhanced throttle response
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Controlled exhaust tone
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Durable stainless steel longevity
Whether you're upgrading a factory system or finishing a custom turbo-back exhaust, Diesel Performance Muffler delivers the sound and flow your truck deserves.
Why DPFexhaust?
DPFexhaust designs high-quality diesel performance exhaust components engineered for real-world durability and performance. Our mufflers are built for Cummins, Duramax, and Powerstroke platforms — delivering dependable results mile after mile.
Upgrade your exhaust system today with us and experience the perfect balance of performance, sound, and durability.
Fast Shipping Policy
Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date. Click for Shipping Policy.
Easy Return Policy
Every order comes with a 14-day free return, which means you don't have to pay for a return slip. Click for Return Policy.
PLEASE NOTE!