aFe POWER Large Bore-HD 4" 409SS DPF-Back Exhaust System w/ Polished Tips for 2020-2026 GM 2500HD/3500HD (V8-6.6L)

Fits select 2020-2026 Chevrolet Silverado and GMC Sierra 2500 HD/3500 HD trucks (V8-6.6L).

The aFe POWER Large Bore-HD DPF-back exhaust system is engineered to improve exhaust flow and durability for heavy-duty GM diesel trucks. Constructed from 4-inch mandrel-bent 409 stainless steel tubing, this system minimizes restriction and is 100% MIG-welded for race-proven strength. A mitered merge collector is utilized to reduce turbulence and increase exhaust velocity, supporting better throttle response and performance. The system is finished with dual 5-inch diameter polished 304 stainless steel intercooled clamp-on tips, featuring a riveted aFe POWER logo plate.

This exhaust system is CAD-designed for high-tolerance fitment and utilizes factory-style hangers to mount directly to OEM locations. While designed for a straightforward installation with all necessary hardware included, please note that some cutting may be required depending on the specific configuration. This part (MPN: 49-44126-P) is compatible with multiple wheelbase configurations, including Double Cab and Crew Cab models with both short and long beds.

• Fits Wheelbases: 149.4", 158.9", 162.4", and 172"
• 4" Mandrel-bent 409 stainless steel tubing for maximum durability
• Dual 5" diameter polished 304 stainless steel intercooled clamp-on tips
• Mitered merge collector decreases turbulence and improves velocity
• 100% MIG-welded for long-term structural integrity
• Includes all necessary installation hardware
• Manufacturer Part Number: 49-44126-P