Grade 5 Titanium Builds Available***
Factory Plug-and-play valves control supported***
One of a Kind. Built for the B58.
The BMW F30 340i, F32 440i, and F36 440i are icons of the last great 3 Series and 4 Series generations—bold, balanced, and powered by the legendary B58 inline-6. But the factory exhaust system leaves a lot of sound—and soul—on the table. That’s why Yonristic Performance engineered the only true full cat-back exhaust system for these cars. No compromises. No cutoffs. Just pure, uninterrupted performance and sound from front to rear.
This system features a full 3.0-inch mandrel-bent design from the downpipe all the way to the rear muffler section, ensuring maximum exhaust velocity and minimal restriction. At the rear, the system incorporates a unique Y-pipe configuration inside the valved muffler section. When the valve is closed, exhaust gases are routed through a muffled, more refined path for quieter daily driving. When open, the flow bypasses the restriction—unleashing raw turbocharged aggression, increased volume, and sharper pops and overrun crackles.
Unlike most aftermarket setups that only replace the rear muffler or axle-back, the Yonristic system is a true full cat-back—designed from scratch for enthusiasts who demand more power, more tone, and more control. Built from 304 stainless steel and hand TIG-welded, this system pairs function with form, with optional carbon fiber tips to match the car’s modern edge.
Key Features:
✔️ Full 3.0-inch mandrel-bent piping – uninterrupted flow from front to back
✔️ Y-pipe with valved control – tame or aggressive at your command
✔️ True full cat-back – the only complete solution on the market for 340i / 440i
✔️ Electronically controlled valve system – OEM-level integration with aftermarket sound
✔️ TIG-welded 304 stainless steel – precision-built and durable under extreme heat
✔️ No check engine light (CEL) – emissions-safe and sensor compatible
✔️ Bolt-on installation – no tuning or cutting required
Vehicle Fitment:
-
BMW F30 340i – 2016–2018
-
BMW F32 440i – 2017–2020
-
BMW F36 440i – 2017–2020
-
Engine: 3.0L Turbocharged Inline-6 (B58)
More Than an Upgrade—It’s a Statement.
From cold start to redline, the Yonristic Valved Sport Exhaust System delivers the full spectrum of what the B58 is capable of—smooth refinement when you need it, ferocious tone when you want it. If you own a 340i or 440i, this is the final piece your build has been missing.
The ONLY true full cat-back on the market. Built exclusively for drivers who demand more.
