Exhaust Kit for Dodge Ram 2500 (2015-2018) 5.7L

High-Flow Dual Muffler-Back Exhaust Kit for 2015-2018 Dodge Ram 2500 (DJ)

What it Does: The dual muffler-back exhaust kit replaces the restrictive factory single-outlet muffler assembly on the 2015-2018 Ram 2500 to reduce exhaust backpressure, improve scavenging, and increase exhaust gas velocity.

The Stock Dodge Ram 2500 Exhaust Restriction and Baffle Degradation

Factory exhaust routing on the heavy-duty DJ chassis relies on a massive, heavily baffled single-inlet/single-outlet muffler. These internal chambers create turbulent acoustic reflections and excessive parasitic backpressure, which chokes exhaust evacuation under heavy sustained payload and towing conditions. Furthermore, the OEM steel casing traps corrosive condensate, accelerating internal rust-through at internal weld joints.

The Engineering Solution

This dual muffler-back system incorporates a two-chamber Flowmaster Super 44 muffler engineered with delta-deflector plates to scavenge spent combustion gases efficiently out of the 5.7L HEMI V8. The assembly routes through mandrel-bent 2.5-inch aluminized steel tail pipes, ensuring a uniform cross-sectional diameter around the rear axle and suspension hangers without crush-induced velocity drops. The slip-fit tail pipes exit straight back along the frame rails while maintaining full functional clearance for factory receiver hitches and standard-dimension spare tires.

What's Included

• 1 Flowmaster Super 44 muffler (single 3-inch inlet, dual 2.5-inch outlets)
• 2 aluminized mandrel-bent multi-piece 2.5-inch tail pipes (slip-together)
• 8 muffler clamps
• 1 larger exhaust clamp
• 4 rubber-insulated hangers

Technical Specifications

Compatibility

• 2015-2018 Dodge Ram 2500 5.7L Gasoline (Factory Single-Inlet Muffler Only)
• Fits all standard, crew, and mega cab wheelbases

Frequently Asked Questions & Fitment Warnings

Does this fit the DJ Ram 2500?

Yes, this is a direct fit for the 2015-2018 Dodge Ram 2500 equipped with the 5.7L HEMI V8 engine. 2014 model years and trucks configured with dual-inlet factory mufflers are strictly excluded.

Is this exhaust system a direct bolt-on installation?

No, this is a universal-fit custom kit requiring professional pipe fitting and potential section fabrication depending on aftermarket suspension or tire clearance.

The Dodge Heavy-Duty Standard

Engineered to endure the intense mechanical demands of heavy-duty towing, this system withstands thermal cycling and severe chassis vibration without cracking at the joints.