4″ / 5″ Downpipe-Back DPF & CAT Delete Exhaust System – 2019–2024 Ram Cummins 6.7L (2500/3500)

Unleash the true power of your 2019–2024 Ram 6.7L Cummins with this downpipe-back DPF/CAT delete exhaust system. Designed for performance, durability, and ease of installation, this system removes factory restrictions and delivers the aggressive diesel sound your truck deserves. Built from high-strength T-409 stainless steel, this is the upgrade serious Cummins owners have been waiting for.

🔧 What’s Inside the Box

• SS409 Downpipe-Back Race Exhaust – designed for 2019–2024 Cummins 2500 & 3500
• Mandrel-Bent Tubing – smooth bends for maximum airflow
• Pre-Bent Exhaust Hangers – easy fitment with factory locations
• 1.25″ Wide Band Clamps – heavy-duty clamping force
• Optional Muffler Upgrade – comes with both straight-pipe & muffler sections
• Polished SS304 Tip – 1″ larger diameter for a bold, clean finish
• Reuse of factory downpipe clamp required

🚙 Vehicle Fitment

• Fits 2019, 2020, 2021, 2022, 2023 & 2024 Ram 2500/3500 Cummins 6.7L Diesel
• Compatible with Regular Cab (short & long bed), Crew Cab (short & long bed), and Mega Cab
• ❌ Will NOT fit Cab & Chassis commercial-style trucks
• ⚠️ Trucks with factory rear airbags require modification when using the 5″ system

🛡️ Exhaust Material & Build Quality

• Made from T-409 stainless steel – corrosion resistant and built to withstand harsh conditions
• Unlike T-304 stainless, T-409 is magnetic — don’t mistake that for low quality
• Highly recommended for trucks that see winter/salty road conditions

⚡ Performance Benefits

• Eliminates restrictive factory DPF & CAT → smoother exhaust flow & lower EGTs
• Aggressive exhaust note that matches your Cummins power
• Fuel mileage boost → expect 18–19 MPG combined (driving style & tires affect results)
• Increased engine longevity by reducing backpressure
• Improved throttle response & horsepower gains with tuning support

⏱️ Installation

• Average install: ~1 hour with basic hand tools in your garage/driveway
• Quicker with an automotive lift
• Cutting may be required for some shorter wheelbase configurations
• All clamps, hangers & hardware included (reuse of some factory parts required)

💻 Tuning Required (No Check Engine Light)

Deleting the DPF/CAT requires specialized tuning to prevent check engine lights and ensure proper engine management. Recommended solutions include:

• EZ Lynk AutoAgent 3 → best for 2019–2021 Cummins
• EFI Live or HP Tuners (ECM Swap) → required for 2022–2024 Cummins

👉 Check out our tuning section for compatible options. Pairing the right tuner with this exhaust unlocks the full potential of your 6.7L Cummins.

✅ Why Choose This Exhaust System?

• Specifically engineered for 2019–2024 Ram 6.7L Cummins 2500/3500
• Heavy-duty stainless steel build for longevity & reliability
• Full kit with everything needed for installation
• Unlocks performance, sound, and efficiency with the right tuning solution

🔥 Free your Cummins from restrictive factory emissions with this 4″ / 5″ Downpipe-Back DPF & CAT Delete Exhaust System. Whether you’re towing, daily driving, or pushing power, this system delivers the durability and performance upgrade your Ram deserves.