★★★★★
Jared D.
I love my new front lip!!
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Yonristic Performance S4/S5 2009-2023 Racing Valved Exhaust System
$2,299.00
$2,499.00
Save $200.00
Unit price
/
Unavailable
- Fitment verified for YOUR exact year/model/trim
- Not sure? Ask a Tech (takes 5 min, we confirm before you order)
- Got install questions? Text a tech who's actually installed this part before, even after it arrives
Yonristic Performance S4/S5 2009-2023 Racing Valved Exhaust System - S4/S5 B9 (2017-2023) / T304 Stainless Steel / (4) Chrome is backordered and will ship as soon as it is back in stock.
Most orders ship in 3-5 days
Yonristic Performance | SKU:
AUDI-S4-2018-LB
Couldn't load pickup availability
Expert Install Support
30-Day Returns
One Year Warranty
Details
Details
The Yonristic Catback Exhaust System for the Audi S4 is designed to elevate the performance and auditory experience of this popular sports sedan. Known for its balance between daily drivability and spirited performance, the Audi S4's stock exhaust system often leaves enthusiasts wanting more in terms of sound and responsiveness. That’s where our custom-built catback exhaust with valve control comes into play, delivering a more aggressive tone while enhancing the overall performance.
Crafted from T304 stainless steel or Grade 5 titanium, the Yonristic system sheds excess weight while maintaining exceptional durability and resilience. The precision-engineered design enhances exhaust flow, reducing backpressure and improving throttle response, resulting in optimized engine performance. Audi's turbocharged V6 deserves an exhaust system that can do justice to its power, and the Yonristic catback does exactly that.
What sets our exhaust apart is the integrated valve control system, giving drivers the ability to adjust the exhaust tone on demand. With just a press of a button, you can switch between a refined, subdued sound for daily drives and an exhilarating roar that brings the Audi S4's performance to life during spirited driving.
In addition to the acoustic benefits, the exhaust system is visually enhanced by double-layered tips, adding a distinctive, polished touch to the rear of the S4. The system fits seamlessly, requiring no modifications to the OEM setup, making it an easy, yet impactful upgrade.
For S4 owners who want to experience the full potential of their vehicle while personalizing their driving experience, the Yonristic Catback Exhaust System with valve control is the perfect solution. It amplifies the V6’s natural sound and power, delivering a driving experience that’s as thrilling as it is sophisticated.
Details:
- Product: Performance exhaust cat-back pipe kit
- Applicable Model: B8 (2009-2016), B9 (2017-2023)
- Material: T304 stainless steel, Grade 5 Titanium Available!
-
Weight Reduction: T304 Stainless Steel (20% lighter), Grade 5 Titanium (65% lighter)
- Valve Type: Electrical with remote control, Dual Valves. Immediate response!
- Control Mode: Remote control + 5 different sound wave levels
- Installation Method: Slip-on with professional clamps + Factory header connection
- Surface Treatment: Yonristic unique technology (polished then frosted)
- Heat Shield Available: This exclusive Yonristic technology can increase the product's durability. It is optional for the stainless steel builds.
This system is tailored for enthusiasts seeking distinctive sound and performance enhancement. It is backed by Yonristic's commitment to quality and customer satisfaction. Please contact us directly for detailed inquiries and to discuss specific customization needs.
- Engineered, designed, and manufactured in-house at Yonristic Performance.
- Satisfaction guaranteed.
- 1-year high-quality warranty guarantee.
- Free shipping/delivery nationwide!
Fitment
Fitment
Our Guarantee
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 & 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.
★★★★★
Victor H.
Pictures don’t do it justice. The ghost out American flag Tesla logo and ghost out American flag Tesla letters look great. Couldn't be more happier. Also great friendly customer service. Would definitely recommend to anyone.
★★★★★
Francesco S.
Fit perfectly i love it
★★★★★
Calvin S.
Looks awesome and build quality is great!
★★★★★
Joshua L. W.
Looks phenomenal and was an easy install!
★★★★★
Mark C.
Looks great carbon fiber red very nice
Yonristic Performance S4/S5 2009-2023 Racing Valved Exhaust System
From
$2,299.00
$2,499.00
Save $200.00
Unit price
/
Unavailable
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.
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
What You Get With Every Order
Products Selected to Meet Quality & Fitment Standards we Stand Behind.
Get Help From People Who Actually Understand Builds & Fitment.
Designed to Resist UV Exposure, Wear, and Everyday Use.
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
Real Experts Answer the Phone
Post-Purchase Installation Support
Curated Quality
30-Day Returns
K2 Industries
Other Brands
K2 Industries
Other Brands
Pre-Order Fitment Verification
Damage Replacement
Real Experts Answer the Phone
Post-Purchase Installation Support
Curated Quality
30-Day Returns
Add to Cart
Perfect fit guaranteed
Perfect fit guaranteedFrequently Asked Questions
How do I know this will actually fit my car?
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?
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?
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?
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?
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?
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?
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?
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?
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?
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?
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.
