Description
Large Bore-HD 3” 409 Stainless Steel DPF-Back Exhaust System – Polished Tip for 2020–2022 Chevrolet Silverado & GMC Sierra 1500 Duramax
Upgrade your 3.0L Duramax truck with the Large Bore-HD 3” DPF-Back Exhaust System from aFe POWER. Designed for maximum strength, performance, and style, this system improves exhaust flow, reduces temperatures, and adds a polished, aggressive finish to your vehicle.
3” Mandrel-Bent 409 Stainless Steel Construction
Constructed from 3-inch mandrel-bent 409 stainless steel tubing, this exhaust provides superior strength, corrosion resistance, and long-term durability. Precision computer-aided design (CAD) ensures high-tolerance, factory-style fitment for a seamless bolt-on installation.
4-1/2” Polished Stainless Steel Tip
The system is finished with a 4-1/2” polished 304 stainless steel clamp-on tip, featuring a laser-etched aFe POWER logo for a premium, performance-oriented look. This polished tip adds an aggressive visual upgrade while maintaining excellent exhaust flow.
Direct Bolt-On Installation
Equipped with factory-style hangers, the Large Bore-HD system mounts directly to OEM locations with no cutting or modifications required, allowing for a secure and hassle-free installation.
Heavy-Duty Interlock Flex Pipe
An integrated interlock flex pipe with internal liner increases durability, reduces stress from engine movement, and ensures long-lasting performance under high-heat conditions.
Performance & Efficiency Features
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MIG-welded construction for strength and leak-free operation
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Intercooled tubing reduces exhaust gas temperatures
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Optimized flow improves throttle response and overall engine efficiency
Wheelbase Fitment:
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Crew Cab / Short Bed – 147.4"
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Extended Cab / Standard Bed – 147.4"
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Crew Cab / Standard Bed – 157"
Emissions Compliance:
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CARB EO# not required
Compatible Models:
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2020–2022 Chevrolet Silverado 1500 Diesel L6 3.0L Duramax
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2020–2022 GMC Sierra 1500 Diesel L6 3.0L Duramax
Engineered and manufactured in Corona, California, the Large Bore-HD 3” DPF-Back Exhaust System with polished tip delivers durable construction, improved performance, and a striking polished finish for your Duramax truck.
