6.4 Powerstroke Downpipe Back Exhaust 4” & 5”

*Race and off road use only*

Take your 2008–2010 Ford SuperDuty’s performance to the next level with this 6.4 Powerstroke Downpipe-Back Exhaust System, proudly manufactured by SPELAB and independently retailed through Secret Diesel Performance. Designed for serious diesel enthusiasts, this system replaces the restrictive factory exhaust from the downpipe all the way to the rear exit, giving your truck a bold new voice, improved flow, and a foundation for better power delivery.  

• Race & Off-Road Focused: Engineered for performance builds — ideal for off-road, towing, or tuned applications (intended for race/off-road use only).