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T304 Stainless Steel
The Purest Stainless Steel used in Exhaust System Manufacturing
High Rust Resistance
Lasts Up To 20+ years
Looks Better

T409 Stainless Steel
The Standard Stainless Steel used in Exhaust System Manufacturing
Low Rust Resistance
Lasts Up To 5-8 Years
Looks Dull
Attention
A 2022 Cummins Tune Package was added to your cart. This tune is a beta tune that may cause the following:
- Low power
- Poor fuel mileage
- Engine codes that may appear
- Poor shifting characteristics
For a tested and proven tune, please view our Ram Cummins 6.7L All-in-One DPF/DEF/EGR Delete Kit w/ECM Swap (2022-2024)
Compare Stainless Steel Quality
Move the bar below to see the difference between the 409 Stainless Steel Standard Black Bandit Exhaust Systems and the 304 Stainless Steel Series III Black Bandit Premium Exhaust Systems.


Features | Black Bandit Standard (409) | Black Bandit Series III (304) |
---|---|---|
Material Type | 409 Ferritic Stainless Steel | 304 Austenitic Stainless Steel |
Composition | Up to 90% Iron, with lower Chromium (10.5%-11.75%) and Nickel (up to 0.5%) | 18% Chromium, 8-10% Nickel, with lower Iron content |
Magnetic Properties | Magnetic | Non-Magnetic |
Rust Resistance | Moderate - Prone to surface rust, especially after heat exposure | High - Resists surface rust except in extreme salty conditions |
Durability | Moderate (5-8 years) - Suitable for standard applications | High (up to 20 years) - Long-lasting for heavy-duty, high-endurance uses |
Aesthetics | Dull, tends to turn brown over time with heat exposure | Shiny, develops a golden hue with heat exposure |
*Data based on general properties of 304 and 409 stainless steel. Actual performance may vary by environment and use.
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