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Mercedes-Benz W213 AMG E400 E43 Valvetronic Exhaust System - Yonristic Performance

$2,249.10 $2,499.00 Save $249.90
  • Fitment verified for YOUR exact year/model/trim
  • Not sure? Call +1 772-277-2495 for a real specialist to help you order
  • Got install questions? Text a tech who's actually installed this part before, even after it arrives
In Stock - Ships in 2 to 5 days
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Yonristic Performance  |  SKU: YR-8394-MER-CAT

Wrong fit or arrives damaged? Free replacement or refund

30,000+ Happy Customers30,000+ Happy Customers
30-Day Returns30-Day Returns
One Year WarrantyOne Year Warranty
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Details

This exhaust system is centered around a large 3.5-inch midpipe, designed to dramatically reduce backpressure compared to the factory layout. The increased cross-section allows exhaust gases to move more freely, improving turbo response on the E400 and sharpening overall engine behavior on the AMG-tuned E43. By maintaining high flow capacity through the mid-section, the system ensures consistent performance even under sustained load or spirited driving.

At the rear, the exhaust transitions into a valved dual-path muffler design. With the valves closed, exhaust gases are routed through a controlled internal path that keeps sound levels refined and cabin noise minimal—ideal for commuting, highway cruising, or long-distance driving. Open the valves using the included remote valve control system, and the exhaust shifts to a more direct flow route, delivering a louder, deeper, and more aggressive tone with crisp throttle response and pronounced overrun characteristics.

The system is engineered using precise underbody measurements to ensure perfect fitment, proper clearance, and OEM-style mounting. All sections are hand TIG-welded for strength and longevity, with smooth transitions and consistent wall thickness to preserve exhaust velocity. The result is a system that not only sounds better, but also feels sharper and more responsive throughout the rev range.

Mercedes W213 AMG Exhaust System for Better Sound and Performance

Thanks to the high-flow midpipe and reduced exhaust restriction, the system delivers tangible performance benefits:

  • Horsepower Gain:
    +15–22 HP at higher RPM

  • Torque Gain:
    +18–25 lb-ft, especially noticeable in the mid-range

  • Throttle Response:
    Improved turbo spool and sharper acceleration response

These gains are achieved without ECU tuning, though additional power can be unlocked when paired with aftermarket software.


Key Specifications

Configuration

  • Performance cat-back exhaust system

  • 3.5-inch high-flow midpipe

  • Dual rear mufflers with active valve control

Valve Control

  • Included remote valve control module

  • On-demand switching between quiet and aggressive modes

  • Independent of factory drive modes for maximum flexibility

Materials & Construction

  • Available in AISI 304 Stainless Steel

  • Hand TIG-welded construction

  • Precision-formed piping with smooth internal transitions

  • Heat-resistant design for long-term durability

Installation

  • 100% bolt-on design

  • Utilizes factory mounting points

  • No cutting or welding required


Vehicle Fitment

  • Mercedes-Benz W213 E400 – 2014–2018

  • Mercedes-AMG W213 E43 – 2016–2018

  • Engine Platforms: Turbocharged V6 variants

 

Valvetronic Control for Daily Driving and Track Use

The Mercedes W213 AMG exhaust system from Yonristic Performance is built for drivers who want both comfort and excitement in one upgrade. Its Valvetronic design lets you control exhaust flow with precision, so you can enjoy a quiet, refined tone when cruising and a louder, more aggressive sound when you want more presence. This makes the system ideal for everyday use, city driving, and spirited performance driving. It is designed to match the character of the Mercedes-Benz W213 AMG E400 and E43 platform while improving the overall driving experience without losing factory-like refinement.

Engineered for Stronger Sound and Smoother Flow

Yonristic Performance designed this Mercedes W213 AMG exhaust system to improve both sound quality and exhaust flow. The system delivers a deeper, more refined tone that brings out the sporty nature of the AMG engine without sounding harsh or overly loud. By helping exhaust gases move more freely, the system supports better throttle response and a more engaged driving feel. Each component is made with performance in mind, offering a balanced setup that enhances the vehicle’s personality. For drivers who want a clean upgrade that adds excitement and value, this exhaust system is a practical and effective choice.

Premium Fitment for Mercedes-Benz W213 E400 and E43

This exhaust system is made for the Mercedes-Benz W213 AMG E400 and E43 models, ensuring a proper fit and reliable installation. The design follows the vehicle’s original structure closely, which helps preserve a clean look and secure mounting. It is a smart upgrade for owners who want performance improvements without changing the overall style of the car. The system also complements the AMG character of the W213 chassis, making it a great choice for enthusiasts who care about both function and appearance. With Yonristic Performance, you get a product that is tailored to the platform and built to meet high expectations.

Why Choose Yonristic Performance for Your Exhaust Upgrade

Yonristic Performance focuses on delivering exhaust systems that combine quality, control, and driving enjoyment. This Mercedes W213 AMG exhaust system is developed for drivers who want a meaningful upgrade that can be felt and heard every time they start the car. The Valvetronic feature gives you flexibility, while the performance-oriented design adds a stronger, more exciting driving experience. Whether you are upgrading for sound, style, or road presence, this system is designed to deliver consistent results. It is an excellent option for Mercedes-Benz owners who want a premium exhaust solution that fits the W213 AMG platform perfectly.

Fitment

Our Guarantee

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 & Returns

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.

FAQs

Will this require a tune after installation?

Bolt-ons like exhaust tips, cat-backs, and basic intakes usually don't. Larger mods — turbo upgrades, supercharger kits, headers — typically need an ECU tune to run safely. The spec sheet indicates if tuning is recommended.

Is this part emissions / CARB compliant?

If you're in California or another CARB-regulated state, check the CARB status on this page before ordering. Many performance parts are off-road or competition use only — if so, we say it clearly.

Will installing this void my factory warranty?

Modifications can affect manufacturer warranty on related components only — not your entire warranty. The Magnuson-Moss Warranty Act protects you from blanket warranty voids. If warranty matters to you, talk to your dealer before installing.

Can I install this myself?

Depends on the part. Bolt-ons are DIY-friendly. Turbo upgrades, headers, and supercharger kits need a professional shop. The product description gives a difficulty estimate.

The K2 Difference

  • • Built by enthusiasts who've made every fitment mistake you're afraid of. Now we verify parts for 30,000+ builds a year with zero wrong-part claims.
  • • Real specialists answer your questions in minutes, not chatbots reading scripts. We've built the same cars you're building.
  • • Freight damage, wrong parts, installation question, we handle it so you don't deal with suppliers or shipping companies.
Founder photo

Built By Someone Who's Been There

Max, the Owner, started in his garage making E36 M3 tail lights in his own oven.

  • • Started modifying cars before he could legally drive them
  • • Spent years hunting down parts that actually fit and don't suck
  • • Made the same fitment mistakes you're afraid of
Founder photo

What You Get With Every Order

Products Selected to Meet Quality & Fitment Standards we Stand Behind.
Products Selected to Meet Quality & Fitment Standards we Stand Behind.
Get Help From People Who Actually Understand Builds & Fitment.
Get Help From People Who Actually Understand Builds & Fitment.
Designed to Resist UV Exposure, Wear, and Everyday Use.
Designed to Resist UV Exposure, Wear, and Everyday Use.
Join Thousands of Builders Who
Trust K2
Join Thousands of Builders Who Trust K2

What Sets K2 Industries Apart?

We don’t just sell parts. We actually give a damn.
Pre-Order Fitment Verification
Damage Replacement
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Post-Purchase Installation Support
Curated Quality
30-Day Returns
K2 Industries
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K2 Industries
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Pre-Order Fitment Verification
Damage Replacement
Real Experts Answer the Phone
Post-Purchase Installation Support
Curated Quality
30-Day Returns
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GuaranteePerfect fit guaranteed

Frequently Asked Questions

How do I know this will actually fit my car?

Every part listing shows compatible years, models, and trims. But here's the thing—trim packages and factory options can be confusing. If you're not 100% certain, text us at 772-277-2495 with your VIN or photos of your car. We'll verify fitment before you order so you're not stuck with an $800 part that doesn't fit. We've done this for 30,000+ builds. We've seen every weird trim combo and factory option. Takes us 2 minutes to verify, saves you weeks of headaches.

What if the part arrives damaged or is the wrong item?

We handle it. You don't fight with freight companies or file claims. Text us photos within 48 hours of delivery. If it's damaged or wrong, we ship a replacement immediately. You're not waiting 6 weeks for a freight claim to process. We eat the cost, not you. This is why we package everything like it's going to war. But if something slips through, we fix it ASAP. No forms, no back-and-forth, no "file a claim and wait." Just text us and we handle it.

Can I install this myself or do I need a shop?

Depends on the part. Emblems, front lips, some spoilers, bolt-on, DIY-friendly, you can do it in your driveway with basic tools. Full bumpers, hoods, wide-body kits, possible for experienced DIYers but most people take them to a shop for paint and install. Check the product description for installation difficulty. If you're unsure, text us. We'll be honest about whether you can handle it or if you should take it to a pro. We'd rather you know upfront than get frustrated halfway through.

What's your return policy if it doesn't fit or I don't like it?

30 days, unused parts in original packaging. You pay return shipping unless we sent the wrong part or it arrived defective. Once you install it, modify it, paint it, or mount it, we can't take it back. That's why we push so hard on verifying fitment BEFORE you order. We don't want you stuck with something you can't use. Text us before ordering if you're unsure. We'll confirm fitment so you never have to worry about returns.

Do you offer financing?

Yes. Affirm and Shop Pay available at checkout for orders over $50. Split payments over 3-12 months depending on order size. No hard credit check to see your options. Most people use this for big-ticket items like body kits, suspension setups, or wheel/tire packages. Rates vary based on credit. You see the monthly payment before you commit. Makes it easier to build now instead of waiting months to save up.

What if I have questions after I receive the part?

Text 772-277-2495. We don't disappear after you buy. Fitment questions, installation issues, "does this bolt go here" questions... we'll walk you through it. We've installed these parts ourselves or helped hundreds of people install them. You're not getting transferred to a call center in the Philippines. You're texting someone who's actually installed your part before. If we can't help remotely, we'll recommend a local shop that knows these parts.

Why should I buy from K2 instead of eBay/Amazon/other sites?

eBay and Amazon sellers don't answer fitment questions. They don't verify your VIN before shipping. They don't handle freight damage claims for you. If something goes wrong, you're filing disputes and waiting weeks. We're builders selling to builders. We verify fitment before you order. We handle damage claims same-day. We answer texts in minutes. We're not the cheapest, but you're not gambling $800 on whether a part fits. You're paying for support, verification, and someone who cares if your build goes sideways.

What does your warranty cover?

1 year against manufacturing defects: cracking, warping, paint peeling, hardware failure, fitment issues caused by the part being made wrong. Does NOT cover installation damage (you cracked it bolting it on), road damage (curb rash, rock chips), or normal wear. If it breaks because we made it wrong, we replace it free. If it breaks because you hit a parking block, that's on you. We're fair about it. Send photos and we'll tell you honestly if it's covered.

Shipping

Do you ship overseas?

Yes, we ship all over the world. Shipping costs will apply, and will be added at checkout. We run discounts and promotions all year, so stay tuned for exclusive deals.

How much does shipping cost and when will I see the total?

Depending on where you're located, small parts can ship free. Large parts like bumpers, hoods, and body kits require freight shipping. Uou'll see the exact cost at checkout before you pay. Freight usually runs $150-$300 depending on size and your location. We know it's expensive. We negotiate the best rates we can. If you're ordering multiple large parts, text us. We can sometimes combine shipping and save you money. We're not hiding fees in the final step. What you see at checkout is what you pay.

How long will it take to receive my order?

It depends on where you are. Orders processed here will take 5-7 business days to arrive. Overseas deliveries can take anywhere from 7-16 days. Delivery details will be provided in your confirmation email.

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