22+ WRX Single Exit Exhaust System

Function Fab 3.5” Catback Exhaust – WRX 22+

You wanted something that stands out — here it is.

The Function Fab 3.5” Catback delivers performance, sound, and craftsmanship that mass-produced systems can’t touch. Handbuilt in the USA from .065 304 stainless steel, every weld and bend is made with precision and pride.

💥 3.5” Stainless V-Band construction – gasketless, easy to install, and simple to adjust
💥 4” Double Wall Tip – made in-house for a flawless finish and perfect proportion
💥 USA made 🇺🇸 and tariff-free materials – supporting local suppliers
💥 Mates seamlessly to OEM-style 2-bolt I-Pipes and other brand 3” I-pipes INCLUDING the RAE system
💥 Zero rasp. Controlled tone. Minimal to zero drone.
💥 Best communication and lead times guaranteed

Built for those pushing limits and demanding individuality — not another cookie-cutter setup. This is a system that looks as good as it performs and sounds even better.

The Function Fab 3.5” Catback — loud in all the right ways, refined where it matters most

**Please allow 3–4 weeks for processing until we’re able to stock these for immediate shipment. Most clients receive their order in 3 weeks or less, and we do our best to keep materials and mufflers on hand to minimize delays.**