AFE Large-Bore Heavy-Duty 4-Inch DPF-Back Exhaust for GM 6.6L Duramax Diesel (2020+) – Polished Tips

Description

This DPF-back exhaust system replaces the restrictive factory path with a high-flow, mandrel-bent 4″ stainless layout that improves exhaust velocity, horsepower and throttle response for GM heavy-duty diesel trucks. Engineered using computer-aided design for precise, factory-style fitment, the system uses a mitered merge collector and factory-style hangers for a mostly direct-fit installation; finishing touches include dual 5″ polished 304 stainless steel clamp-on intercooled tips with an aFe POWER logo plate for corrosion resistance and distinctive styling.

Features:

• Mandrel-bent 4″ 409 stainless steel tubing
• Dual 5″ polished 304 stainless steel tips
• aFe POWER logo plate riveted
• Mitered merge collector increases exhaust velocity
• 100% MIG-welded for race-proven strength
• Factory-style hangers for direct-fit installation
• Computer-aided design for high-tolerance fitment

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