aFe Power Large Bore-HD 4in 409SS DPF-Back Exhaust w/ Dual 5in Black Tips for 2020-2026 GM 2500/3500 HD (V8-6.6L)

Fits select 2020-2026 Chevrolet Silverado and GMC Sierra 2500 HD/3500 HD models equipped with the V8-6.6L turbo-diesel engine.

Engineered for maximum durability and exhaust velocity, this aFe Power Large Bore-HD DPF-back exhaust system is constructed from 4-inch mandrel-bent 409 stainless steel tubing. The system features a mitered merge collector designed to reduce turbulence and increase exhaust scavenging, directly improving throttle response and overall performance. The assembly is 100% MIG-welded for high-tolerance, race-proven strength that handles the heat and vibration of heavy-duty diesel applications.

The system is finished with dual 5-inch diameter black 304 stainless steel intercooled clamp-on tips, providing a custom aesthetic while managing heat exit. Installation is straightforward, utilizing factory-style hangers and mounting points for a secure, hassle-free fit. Please note that some cutting may be required depending on the specific wheelbase configuration.

• Fits Wheelbases: 149.4" (Double Cab/Short), 158.9" (Crew Cab/Short), 162.4" (Double Cab/Long), and 172" (Crew Cab/Long)
• Construction: 4" Mandrel-bent 409 stainless steel tubing
• Tips: Dual 5" black 304 stainless steel intercooled clamp-on tips with riveted logo plates
• Assembly: 100% MIG-welded for maximum durability
• Installation: Reuses factory mounting locations and hangers
• Manufacturer Part Number: 49-44126-B