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Notes
Symmetrical Dual-Exit Styling: Fills under-bumper rear space on both sides for an aggressive, custom heavy-duty truck stance.
2x Tailpipe Flow Area: Twin 5" rear outlets split exhaust volume to minimize end-pipe backpressure during extreme high-RPM pulls.
Heavy-Duty 2mm T409 Stainless Steel: Built to withstand northern road salt, mud, moisture, and severe thermal stress without structural degradation.
Acoustically Balanced Diesel Note: Muffler-free straight-pipe design distributes acoustic energy evenly across both sides to deliver a deep, resonate roar with reduced single-side cabin drone.
Complete 19-Piece Precision Bolt-On Kit: Includes mid-pipe, 5" Y-splitter, dual tailpipes, plus all necessary 409 band clamps and auxiliary hangers for a secure fitment.
Check if this fits your vehicle
Upgrade your 2017–2019 Chevy Silverado or GMC Sierra 2500HD/3500HD 6.6L L5P with our premium 5-inch Downpipe-Back Dual Exhaust System. By eliminating restrictive factory emissions components and doubling your rear exhaust volume, this system dramatically lowers Exhaust Gas Temperatures (EGTs), optimizes airflow, and delivers a commanding, dual-exit rear profile.
Exploring broader options for your truck build? Browse our complete duramax DPF delete to find matching performance upgrades.
| Comparison Metric | 5" Downpipe-Back Dual Exhaust (Current Page) | 5" Single DPF Delete Race Pipe | Key Difference & Buying Impact |
|---|---|---|---|
| Price | $799.00 | $679.25 | $119.75 Price Difference: Dual system includes 1 Y-pipe splitter, an extra tailpipe assembly, and dedicated left-side hangers. |
| Exit Flow Area | 39.2 sq.in (Twin 5" Outlets) | 19.6 sq.in (Single 5" Outlet) | 2x Flow Capacity: Dual outlets split exhaust volume to minimize backpressure during high-RPM pulls and heavy hauling. |
| Kit Component Count | 19-Piece Kit (8 Pipes + 2 Sleeves + 9 Hardware) | 13-Piece Kit (4 Pipes + 2 Sleeves + 7 Hardware) | Hardware Complexity: Dual system includes 6 additional pieces to route piping around the spare tire and frame. |
| Estimated Install Time | 1.5 – 2 Hours | ~1 Hour | Single pipe installs faster; dual pipe requires extra time to align rear left hangers and dual tips. |
| Sound Profile & Aesthetics | Balanced Dual Exit / Deep Acoustic Resonance | Classic Single Exit / Sharper Direct Tone | Dual exit fills both rear bumper cutouts with balanced acoustic tone; single exit keeps a clean, factory-like side profile. |
Want a deeper dive into pipe sizing and flow dynamics before deciding? Check out our 5" downpipe-back exhaust guide.
IMPORTANT NOTICE
This product is intended for off-road, racing, or competition use only and is not legal for public road use or for vehicles subject to emissions regulations in the United States. Vehicles equipped with this product may fail emissions or state inspections.
Customers are responsible for ensuring compliance with all applicable local, state, and federal laws. Installation of aftermarket parts may also affect your vehicle warranty—please consult your manufacturer for warranty coverage.
International legality may vary; users should confirm local laws before installation.
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