4"/5" Downpipe-Back without Muffler for 2020-2024 Ford 6.7 Powerstroke F250 F350 F450

This 4"/5" Dp-Back system is a direct replacement for the factory exhaust on 2020‑2022 Ford F‑250, F‑350, and F‑450 trucks equipped with the 6.7L Powerstroke diesel engine. Designed as a complete turbo‑back solution, it removes the restrictive catalytic converter, DPF, and muffler section, delivering reduced exhaust backpressure, improved turbo response, and a deeper, more aggressive diesel sound. Constructed from durable 409 stainless steel, the system bolts directly in place using factory hangers and hardware—no welding required. It is intended for off‑road, competition, or heavy‑duty applications where performance and durability are prioritized.

Key Features

• Complete Turbo‑Back Replacement – Replaces the factory exhaust from the turbo outlet all the way to the rear, including downpipe, mid‑pipe, all hangers, and installation hardware.
• Increased Flow & Performance – Larger diameter piping reduces exhaust backpressure, lowers turbo and engine strain, and supports increased torque and power potential.
• No Muffler Design – Straight‑through configuration enhances exhaust flow and produces a more direct, robust diesel sound.
• 409 Stainless Steel Construction – Offers corrosion resistance and withstands high‑temperature fatigue, ideal for harsh environments.
• Bolt‑On Installation – Uses factory mounting points and bolt‑together connections for straightforward installation.
• Neutral Packaging – No logos on product or packaging.

Specification

• 4"/5" Downpipe Back Exhaust system.
• T409 Stainless Steel
• Single Side Exit
• Easy Installation - Mounts to OE Hangers

Installation

• Estimated install time: ~1 hour with basic tools; faster on a lift.
• Kit includes clamps, hangers, and hardware—some OEM pieces may be reused.
• Tuner Required: DPF, CAT, SCR, and DOC deletions disable emissions sensors. A tuner with Powerstroke DPF delete capability ensures no check-engine lights or fault codes.

• Ford F-250 F-350 F-450 Super Duty 6.7L Powerstroke Diesel: 2020-2024
  
• Does not fit Cab & Chassis

Q1: What’s the difference between a Downpipe-Back and a Turbo-Back exhaust system?
A1: A downpipe-back system starts after the downpipe and retains the OEM downpipe, making installation easier. A turbo-back replaces the entire exhaust from the turbo, offering more performance but requiring more modification.

Q2: Will this 5” downpipe-back exhaust fit a cab & chassis model?
A2: No, this kit is designed for standard pickup configurations only (F-250, F-350, F-450). It is not compatible with cab & chassis models due to differences in frame and exhaust routing.

Q3: Will the 5-inch exhaust system cause excessive drone inside the cab?
A3: The 5" system may produce deeper tones and mild drone depending on cab insulation and presence of a muffler. For a quieter ride, choose the version with a muffler.

Q4: Can I install this kit in my home garage without a lift?
A4: Yes, installation can be done with basic hand tools on the ground. However, having a lift will speed up the process and make alignment easier.

Q5: Is the 5” system too large for a stock turbo setup?
A5: No, many users run a 5" downpipe-back exhaust on stock or mildly tuned 6.7 Powerstroke trucks with no issues. It provides enhanced flow and lower EGTs without hurting performance.

Q6: Will installing a 5-inch DPF delete exhaust improve towing performance?
A6: Yes, lower backpressure improves engine efficiency, reduces EGTs, and helps maintain power during extended towing or hill climbs—especially when paired with a tuner.

Q9: Can this exhaust system be used with aftermarket tuners like the Mini Maxx or EZ Lynk?
A9: Absolutely. It’s fully compatible with most DPF-delete capable tuners, including Mini Maxx, EZ Lynk, H&S, and EFI Live. Always verify tuner settings before installation.

Q10: Is this exhaust system street legal?
A10: No, this DPF-delete exhaust system is intended for off-road and race use only. Use on public roads may violate federal and state emissions regulations. Check local laws before purchasing.