BMW F30 F32 F36 340i 440i Catback Performance Exhaust - Yonristic Performance

BMW F30 340i 440i Exhaust System

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.

Unmatched Performance with Every Rev

The BMW F30 340i and F32 440i owners know that nothing enhances driving pleasure like a high-performance exhaust system. The Yonristic Catback Exhaust System maximizes the engine's output and significantly improves throttle response. This system not only delivers a more aggressive exhaust note but also enhances the overall performance of your vehicle, making every drive an exhilarating experience. With its superior design, this exhaust system is engineered to provide maximum flow, ensuring your car performs at its best.

Durable Construction for Lasting Quality

When investing in an exhaust system, durability is paramount. The BMW F30 340i 440i Exhaust System by Yonristic is crafted from high-quality materials designed to withstand the rigors of daily driving and track days alike. The 304 stainless steel construction resists corrosion and maintains its luster over time. Additionally, the precise fit and finish means installation is straightforward, allowing you to enjoy the benefits without the hassle. This attention to quality ensures you'll enjoy your performance upgrade for years to come.

Enhanced Sound and Style

Beyond just performance improvements, the Yonristic Catback Exhaust System provides a distinctive sound that commands attention. When you rev your engine, the deep, throaty growl turns heads and brings a smile to your face. Furthermore, the sleek design seamlessly integrates with your BMW's aesthetics, giving it a polished look. So if you want to separate your F30 or F32 from the rest, this system offers both superior sound and an enhanced visual appeal, making your car truly unique on the road.

Warranty Assurance:

At K2 Industries, your satisfaction is our priority, and we stand behind the quality of our products. Here's a brief overview of our warranty:

Defect Coverage:
If you find a defect after receiving your order, get in touch with us. We're committed to resolving the issue, whether it involves a replacement, repair, or refund.

Installation Note:
Please inspect your purchase before installation. Unfortunately, damages post-installation are not covered, so ensure everything looks good beforehand.

Claims Made Simple:
Need to make a claim? Reach out to us at support@k2-industries.com. We're here to assist you. Just keep your original packaging and documentation handy.

Your Satisfaction Matters:
Your trust in K2 Industries is appreciated. We're dedicated to ensuring your satisfaction with our quality automotive parts.

Shipping Information:

At K2 Industries, we strive to provide a seamless and efficient shopping experience for automotive enthusiasts like you. Our commitment is to deliver high-quality parts to your doorstep with the utmost care.

Fast and Reliable Shipping:
Many of our products are stocked in our local warehouse, ensuring swift processing and delivery. Orders placed for these items typically ship within 2-5 business days, allowing you to get your parts in no time.

Extended Selection, Global Reach:
To offer you a broader range of automotive parts, some items are sourced from trusted suppliers around the world. While these products might have a slightly longer processing time, we assure you that the wait is worth it for the exceptional quality and value they bring.

Shipping Transparency:
For products shipped internationally, we provide estimated delivery times on the product page. Rest assured, we are continually working to optimize our supply chain and minimize any potential delays.

Combined Shipments:
To streamline your shopping experience, if your order includes items from both our local warehouse and international suppliers, they may be shipped separately. You will receive separate tracking information for each shipment.

Questions or Concerns?
If you have any questions about shipping or would like assistance tracking your order, our dedicated customer support team is here to help. Feel free to reach out to us at support@k2-industries.com.

You can also track your order here

Thank you for choosing K2 Industries for your automotive needs. We appreciate your trust in us.