Description
DPF-BACK EXHAUST SYSTEM. The AFE Large Bore-HD 4-Inch DPF-Back Dual Exhaust System with Black Tips; Side Exit is engineered to improve exhaust flow and performance on diesel trucks. It replaces the factory exhaust while maintaining emissions compliance, enhancing horsepower, torque, and throttle response.
Construction and Appearance. Crafted from durable 4-inch mandrel-bent 409 stainless steel tubing, this exhaust system features dual 5-inch black 304 stainless steel intercooled clamp-on tips with a distinctive logo plate for a refined and aggressive appearance. The entire system is 100% MIG-welded to ensure long-lasting strength and durability.
Installation. The exhaust system uses factory-style hangers and mounts directly to factory mounting points for a secure fit. Some cutting is required, but the included hardware simplifies the installation process.
Application. Specifically designed for 2020-2026 6.6L Duramax Sierra 2500 HD diesel trucks, this exhaust system is engineered for exact fitment on those models.
AFE 49-44126-B
CA Residents: WARNING: Cancer and Reproductive Harm
- Constructed From 4″ Mandrel-Bent 409 Stainless Steel Tubing
- Dual 5″ Diameter Black 304 Stainless Steel Intercooled Clamp-On Exhaust Tips Featuring a Distinctive Logo Plate
- Utilizes Factory-Style Hangers For A Secure Fit
- 100% MIG-Welded For Strength And Durability
- All Necessary Hardware Included For Hassle-Free Installation
- Filter Included
- Coupler Included
- Integrated Mitered Merge Collector To Decrease Turbulence And Increase Exhaust Velocity
- Computer-Aided Design Ensures Custom, High-Tolerance Factory Fitment
- Wheelbase Fitment: Double Cab / Short-Bed – 149.4″ Wheelbase, Crew Cab / Short-Bed – 158.9″ Wheelbase, Double Cab / Long-Bed – 162.4″ Wheelbase, Crew Cab / Long-Bed – 172″ Wheelbase
- Fits 2020-2026 6.6L Duramax Sierra 2500 HD
| Brand | AFE |
| Exhaust System Type | Cat-Back System |
| Exhaust Tip Finish | Black, Black Chrome |
| Exhaust Tubing Diameter | 4.00 Inch |
| Exhaust Material | Stainless Steel |
| Exhaust Tip Outlet Style | Dual |
| Exhaust Exit Location | Both Sides – After Tire |
| Exhaust Loudness | Moderate |






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