Fit for 13-17 Ford Focus ST 2.0L 3 Catless Turbo Stainless Steel Downpipe

What is Fit for 13-17 Ford Focus ST 2.0L 3 Catless Turbo Stainless Steel Downpipe?

This performance downpipe is engineered specifically for the 2013–2017 Ford Focus ST equipped with the 2.0L EcoBoost engine. Constructed from durable 304 stainless steel, it replaces the restrictive factory catted downpipe with a free-flowing, catless 3-inch straight-through design. The result is reduced backpressure, improved turbo spool, and measurable power gains—rated at 15+ horsepower. Designed for direct bolt-on installation, it integrates seamlessly with the factory turbo outlet and pairs well with aftermarket cat-back exhaust systems, including 2.5-inch variants.

Key features

• 304 Stainless Steel Construction — Resists corrosion and withstands high exhaust temperatures for long-term durability.
• 3-Inch Catless Straight-Through Design — Maximizes exhaust flow and reduces backpressure for improved performance.
• Direct Bolt-On Fitment — No modifications required; installs using existing mounting points.
• Stainless Steel Braided Flex Section — Absorbs engine vibration and prevents cracking under stress.
• 15+ Horsepower Gain — Delivers immediate performance improvement post-installation.
• Interlock Inner Design — Enhances structural integrity and flow efficiency.
• Off-Road Use Only — Not legal for street use in California or CARB-regulated states.

Who is Fit for 13-17 Ford Focus ST 2.0L 3 Catless Turbo Stainless Steel Downpipe for?

This downpipe is ideal for performance enthusiasts seeking to unlock additional power from their Focus ST’s EcoBoost engine. It's best suited for track-day drivers, tuners, or off-road vehicles not required to pass emissions testing. Due to the removal of the catalytic converter, a tune or O2 sensor adapter is required to prevent check engine lights, making it appropriate for users with basic tuning knowledge or access to a tuning service.

How does Fit for 13-17 Ford Focus ST 2.0L 3 Catless Turbo Stainless Steel Downpipe compare?

Compared to stock or catted downpipes, this catless version offers superior exhaust flow and power gains but lacks emissions compliance. It outperforms mild performance upgrades like cat-back systems, which typically yield only 5–10 hp. Against similar aftermarket stainless steel downpipes, it holds competitive pricing at $180.00 while maintaining quality materials and fitment. However, it does not meet CARB standards, limiting street usability in regulated regions.