4" Downpipe-Back Cab&Chassis 2011-2019 Ford 6.7 Powerstroke

4” Downpipe-Back Exhaust System (Cab & Chassis)

2011–2019 Ford 6.7L Powerstroke

*Race and off-road use only*

Upgrade exhaust flow and durability on your 2011–2019 Ford 6.7L Powerstroke cab & chassis truck with this 4” downpipe-back exhaust system, manufactured by SPELAB and independently retailed by Secret Diesel Performance.

Designed specifically for cab & chassis applications, this system replaces the restrictive factory exhaust from the downpipe back, helping reduce backpressure and improve overall exhaust efficiency. Ideal for off-road use, towing applications, and performance-oriented builds, it delivers a deeper exhaust tone while supporting improved drivability and future upgrades.

Built with durability and proper fitment in mind, the system features a modular design intended for straightforward installation and reliable long-term performance in demanding work or performance environments.

Features & Benefits

• Downpipe-back exhaust system for 6.7L Powerstroke
• Designed specifically for cab & chassis configurations
• Improves exhaust flow and reduces backpressure
• Deeper, more aggressive exhaust tone compared to stock
• Direct replacement for factory exhaust components
• Engineered for race and off-road performance use

Fitment

• 2011–2019 Ford F-Series Cab & Chassis trucks
• 6.7L Powerstroke diesel engine

Important Notes

• Intended for race and off-road use only
• Not legal for use on public roads in some states
• Cab & chassis specific — not for standard pickup bed models
• Professional installation recommended
• Product is independently retailed and not affiliated with or endorsed by the vehicle manufacturer