Upgrade your 6.7 cummins exhaust system with SPELAB’s high-performance DPF-back pipe, designed for enthusiasts who want to keep DPF while enjoying an aggressive exhaust note. Crafted from durable 409 or 304 stainless steel, our pipe offers a superior OE+ solution—409 for a cost-effective replacement (solving aging pipe issues) or 304 for enhanced corrosion resistance. The black-painted exhaust tip delivers a sleek, aggressive look, while the enlarged outlet ensures deeper sound and improved flow. Drive louder, stand out—without DPF removal!
| Parameter |
T304 |
T409 |
| Corrosion Resistance |
18% Cr, 8% Ni (Better) |
11% Cr, trace Ti (Good) |
| High Temp Resistance |
≤ 870°C |
≤ 800°C |
| Oxidation Resistance |
Excellent |
Good |
| Salt/Cl- Resistance |
Excellent |
Good |
| Sulfide Resistance |
Excellent |
Good |
| Estimated Lifespan |
10–15+ years |
7–12 years |
Specification
| Filter Back Material |
T409/T304 Stainless Steel |
| Exhaust Tip Material |
Stainless Steel |
| Exhaust Diameter |
5" |
| Installation |
Bolt-on (no welding required) |
| Sound Level |
Performance-enhanced tone (deeper but not overly loud) |
Features
-
Optimized Exhaust Flow - Minimizes backpressure to unlock hidden engine potential, improving acceleration and overall drivability.
-
Heavy-Duty Material Options - Features stainless steel construction, available for superior corrosion resistance in harsh environments.
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Simple Installation - Direct bolt-on replacement using OEM mounting points - no cutting or welding required.
-
Signature Sound Profile - Delivers a deep, throaty exhaust note that enhances your driving experience without cabin resonance.
-
Factory-Engineered Fit - Precision-designed to maintain original equipment clearances and alignment.
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Emissions Compliant - Fully compatible with your factory-installed DPF system (not a delete kit).
-
Custom Aesthetic - Features a matte-black finished tip for a sleek, aggressive rear-end appearance.
What's in the BOX?
5"Extension Pipe x 1
Tail Pipе x 1
4" Clamps x 1
5" Clamps x 1
Exhaust Tip x 1
