SD-6.7PEX17-01-20 5 inch Exhaust Cat-Back System (409 Stainless Steel)

Features:

• Improves horsepower and acceleration
• Lowers exhaust gas temperatures
• Increases turbo spool efficiency
• 409 stainless steel construction
• Precision bent for optimal airflow
• Compatible with long and short beds
• Includes 5” to 6” polished tip
• Enhances aggressive exhaust tone
• Easy bolt-on installation process
• Includes all necessary hardware
• Designed for DPF-back configuration
• Backed by 1-year Sinister warranty

Turn Heads Every Time You Hit The Throttle

If you’re ready to wake up your 6.7L Powerstroke and give it the sound and performance it deserves, the Sinister Diesel 5" Cat-Back Exhaust is exactly what your truck needs. This system doesn’t just add volume, it brings a deep, aggressive exhaust note that announces your arrival without being overbearing. It’s the kind of sound that diesel lovers recognize and respect. But it’s not all about sound; this exhaust upgrade improves turbo spool-up and airflow, helping your truck pull harder whether you're towing a trailer or just cruising down the highway. You'll also notice lower exhaust gas temps, which can mean better engine efficiency and reliability in the long run. Built from corrosion-resistant 409 stainless steel, it's tough enough to handle daily driving, road salt, and job site abuse. Best of all, it comes complete with all hardware and a polished 5-to-6 inch rolled edge tip that looks just as good as it performs.

Precision Built For Power And Durability

Engineered with performance and longevity in mind, the Sinister Diesel SD-6.7PEX17-01-20 exhaust system is a true DPF-back upgrade tailored for 2017–2023 Ford F250 and F350 Super Duty trucks. It features full 5-inch mandrel-bent tubing, allowing for smoother and more consistent exhaust flow compared to stock systems. This improved flow not only enhances horsepower and throttle response but also supports more efficient turbo function by reducing backpressure. The entire kit is crafted from 409-grade stainless steel, chosen for its strong balance of durability and resistance to heat and corrosion in demanding diesel applications. It’s also designed to fit both long and short bed configurations, making it a versatile option for nearly any Powerstroke setup. Installation is straightforward, requiring no tuning or complex modifications, and all clamps, hangers, and hardware are included. The system finishes off with a high-quality 6-inch polished tip, giving your truck a clean and commanding look from every angle.

Fits: 2017, 2018, 2019, 2020, 2021, 2022, 2023 Ford F250/F350 Super Duty 6.7L Powerstroke

Notes:

• Fits 2017–2023 Ford F250 and F350 6.7L Powerstroke models
• Designed as a DPF-back exhaust system
• Does not delete emissions components or require tuning
• Compatible with both long bed and short bed trucks
• Built from corrosion-resistant 409 stainless steel
• Includes 5-inch to 6-inch polished exhaust tip
• Intended for off-road and performance applications
• May increase exhaust sound volume over stock system
• Comes with all necessary hardware for installation
• Professional installation recommended for best results
• Not legal for sale or use in California (CARB restrictions)
• Includes 1-year manufacturer warranty from Sinister Diesel