COBB Catback Exhaust Ford Fiesta ST (2014-2019) Dual 3.5" Slash Cut Tips

Fitment Information

• Ford Fiesta ST B299 (2014, 2015, 2016, 2017, 2018, 2019)

Specs & Features

• Premium Build: Constructed entirely from 304 Stainless Steel (not the cheap stuff) to resist corrosion and keep looking fresh for years.
• The Perfect Growl: Engineered with a custom single muffler layout that delivers a deep, throaty tone without the headache-inducing highway drone.
• Aggressive Rear End: Features dual 3.5" Slash-Cut Polished Tips that fill out the rear valence perfectly, replacing the wimpy stock tips.
• Smooth Flow: CNC Mandrel-Bent Tubing ensures the 2.5" diameter stays constant through every curve, eliminating restriction and turbulence.
• Easy Bolt-On: Designed as a direct replacement that fits seamlessly with either the Factory Downpipe or the COBB Downpipe.

Product Description

The Fiesta ST is arguably the best "bang-for-your-buck" car on the road, but Ford definitely saved money on the exhaust. It’s quiet, restrictive, and frankly, a bit boring. COBB built the 2.5" Cat-Back to change the car's entire personality.

There is a big difference between "loud" and "good." Any shop can weld a straight pipe and make your ears bleed. COBB spent time engineering a custom single muffler that filters out the high-pitched rasp and leaves you with a deep, mature tone. It gurgles on downshifts and roars when you mash the throttle, but settles down when you're cruising on the freeway. It’s drone-free, so you can actually hold a conversation inside the car.

COBB don't mess around with aluminized steel that rusts out after one salty winter. This entire system—from the flanges to the hangers—is built from 304 Stainless Steel. The tubing is CNC mandrel bent, meaning the pipe doesn't get crushed or wrinkled in the corners. This keeps the exhaust velocity high, which helps your turbo spool faster.

The rear of the Fiesta ST looks a bit unfinished from the factory. Our Dual 3.5" Slash-Cut Tips fix that immediately. They are polished to a mirror finish and laser-etched with the COBB logo, giving the car a much more planted, aggressive look from behind. Whether you are keeping the engine stock or aiming for Stage 3, this is the exhaust that fits right, sounds right, and looks the part.

This isn't just an exhaust; it's the voice your Fiesta ST was supposed to have. With top-tier 304 stainless construction and a sound profile that puts a smile on your face every time you hit the gas, the COBB Cat-Back is the definitive upgrade for the 1.6L EcoBoost.