2019–2025 Cummins aFe Large Bore HD 5" DPF‑Back Exhaust System with Black Exhaust Tip (49‑42078‑B)
The aFe Large Bore HD 5" DPF‑Back Exhaust System with Black Exhaust Tip (49‑42078‑B) is engineered for 2019–2025 Ram 2500/3500 trucks equipped with the 6.7L Cummins diesel. This performance exhaust replaces the factory DPF‑back section with larger‑diameter mandrel‑bent 5" tubing, reducing restriction and promoting better exhaust flow — which can help support improved throttle response, torque delivery, and overall engine efficiency under load.
Constructed from durable aluminized steel with 5" mandrel bends, the system features a bold black stainless steel exhaust tip that not only looks sharp but also adds a custom, finished appearance to your truck’s rear. The bolt‑on design uses factory‑style hangers and supplied clamps for a straightforward installation without cutting or welding. (xtremediesel.com)
Key Features
- Direct‑fit 5" DPF‑back exhaust system for 2019–2025 Ram 2500/3500 with 6.7L Cummins
- Mandrel‑bent 5" aluminized steel tubing for enhanced flow and durability
- Black stainless steel exhaust tip with aFe logo plate
- Bolt‑on installation with factory‑style hangers and clamps — no cutting or welding
- Smooth bends to help reduce backpressure and increase efficiency
- Aggressive yet daily‑friendly exhaust tone
Fitment
- 2019–2025 Ram 2500 6.7L Cummins
- 2019–2025 Ram 3500 6.7L Cummins
Check exact wheelbase/cab configuration compatibility before ordering.
Benefits
Upgrading to this Large Bore HD exhaust system improves exhaust gas flow compared to the restrictive stock setup, which can lead to a more responsive throttle feel, better torque application under load, and a richer exhaust note. The 5" piping and smooth mandrel bends help optimize flow while the black tip gives a standout factory‑inspired finish.
Why Choose Large Bore HD
The Large Bore HD series is built for truck owners who want improved performance without sacrificing daily drivability. It strikes a balance between enhanced exhaust flow, refined sound, and durable construction — all with a straightforward installation that keeps your truck looking sharp and exhausting efficiently.