Product came quick and fit great. I love it.
Built for Precision. Tuned for Emotion.
The S55 engine inside the F80 M3 and F82/F83 M4 is a marvel of engineering, but the factory exhaust leaves drivers divided. Thin, metallic rasp dominates the sound, muting the depth and richness this platform deserves. At Yonristic, we set out to change that — not just by making the car louder, but by engineering a system that redefines the way the S55 sings.
The system begins with a 2.75-inch dual midsection, engineered so that each bank of cylinders travels the same distance before merging. This equal-length layout transforms the character of the exhaust note, smoothing the harshness that plagues the stock system and replacing it with a balanced, refined resonance. Midway through, a carefully designed H-style crossover improves exhaust pulse timing and enhances midrange torque, while also giving the note a deeper, fuller texture. From there, gases flow into a 3.5-inch rear section that splits into four outlets, creating a commanding finish both in tone and aesthetics.
At the rear, a dual-path valve system gives you control over the car’s personality. Open the valves and exhaust gases are released through an almost straight-through pathway, delivering a raw, aggressive note with sharp overrun crackles and a rising pitch that builds to an exotic wail. Close the valves and gases are routed into a multi-chamber muffler, engineered with tuned resonators to absorb unwanted frequencies and create a smooth, composed soundtrack for comfortable cruising. Integration with the OEM electronic valve system means instant control with your factory drive modes, but an independent controller is also available for additional flexibility.
The Yonristic F8X Cat-Back is available in two premium constructions: AISI 304 stainless steel for long-term durability, or Grade 5 titanium (Ti-6Al-4V) for those seeking extreme weight savings and sharper tonal character. In titanium form, the system sheds nearly 50 pounds compared to stock, giving the F8X sharper handling dynamics and quicker throttle response. Each system is hand TIG-welded, with every joint polished for smooth internal flow. CNC-machined flanges and hangers, derived from 3D scan data, guarantee an exact factory fit with no cutting, welding, or modifications required.
The exhaust terminates in quad 4-inch tips, significantly larger than OEM, designed to fill the diffuser perfectly. Offered in polished stainless, black chrome, carbon fiber, or burnt titanium, the tips are both a visual statement and an acoustic tuning element, shaped to sharpen the crispness of the sound at higher revs. From idle burbles to high-RPM shrieks, this system creates a soundtrack that is unmistakably exotic yet unmistakably BMW.
2.75" equal-length midsection for pulse balancing & tonal refinement
H-crossover for torque enhancement & smoother frequency blending
3.5" axle-back section with dual-path valve control
OEM valve integration with optional independent controller
Quad 4" tips in multiple premium finishes
Bolt-on installation with CNC precision fitment
Hand TIG-welded craftsmanship for strength and beauty
This isn’t simply an exhaust replacement — it’s a reinvention of how the F8X should sound. By combining motorsport-inspired engineering with artistry in fabrication, we’ve created a system that transforms every drive. Quiet and composed when you need discretion, spine-tingling and exotic when you demand excitement, the Yonristic Cat-Back delivers a level of duality and refinement that the factory system could never achieve.
Your S55 finally has the voice it was born to sing with.
The Yonristic Performance F8X Exhaust is engineered for BMW F8X M3 and M4 owners who want a stronger driving feel and a more refined exhaust note. Its equal-length design helps balance exhaust flow, which supports smoother pulse delivery and a more consistent sound under acceleration. This setup is ideal for drivers who want performance gains without losing everyday usability. By improving flow efficiency, the system can help the engine breathe better while also giving the car a more aggressive character. It is a smart upgrade for enthusiasts who value both engineering and sound quality.
This F8X Exhaust system is designed to deliver a deeper, cleaner, and more exciting tone that matches the personality of the BMW M platform. Compared with the factory setup, it offers a more engaging sound profile that becomes more noticeable during spirited driving, yet remains controlled enough for regular street use. The equal-length layout also supports sharper throttle response, making the car feel more direct and responsive. In addition to performance, the system adds a premium look to the underbody, reflecting the level of craftsmanship expected from a high-end performance part.
Whether your BMW F8X M3 or M4 is a daily driver, weekend car, or track-focused build, this exhaust system is made to fit a wide range of driving needs. Yonristic Performance focuses on quality and durability, so the system is built to handle demanding conditions while maintaining reliable long-term performance. For drivers who want a noticeable improvement without going too extreme, this exhaust offers an excellent balance of sound, flow, and practicality. If you are looking to enhance your BMW with a proven performance upgrade, the F8X Exhaust is a strong choice that delivers real driving excitement.
Built for Precision. Tuned for Emotion.
The S55 engine inside the F80 M3 and F82/F83 M4 is a marvel of engineering, but the factory exhaust leaves drivers divided. Thin, metallic rasp dominates the sound, muting the depth and richness this platform deserves. At Yonristic, we set out to change that — not just by making the car louder, but by engineering a system that redefines the way the S55 sings.
The system begins with a 2.75-inch dual midsection, engineered so that each bank of cylinders travels the same distance before merging. This equal-length layout transforms the character of the exhaust note, smoothing the harshness that plagues the stock system and replacing it with a balanced, refined resonance. Midway through, a carefully designed H-style crossover improves exhaust pulse timing and enhances midrange torque, while also giving the note a deeper, fuller texture. From there, gases flow into a 3.5-inch rear section that splits into four outlets, creating a commanding finish both in tone and aesthetics.
At the rear, a dual-path valve system gives you control over the car’s personality. Open the valves and exhaust gases are released through an almost straight-through pathway, delivering a raw, aggressive note with sharp overrun crackles and a rising pitch that builds to an exotic wail. Close the valves and gases are routed into a multi-chamber muffler, engineered with tuned resonators to absorb unwanted frequencies and create a smooth, composed soundtrack for comfortable cruising. Integration with the OEM electronic valve system means instant control with your factory drive modes, but an independent controller is also available for additional flexibility.
The Yonristic F8X Cat-Back is available in two premium constructions: AISI 304 stainless steel for long-term durability, or Grade 5 titanium (Ti-6Al-4V) for those seeking extreme weight savings and sharper tonal character. In titanium form, the system sheds nearly 50 pounds compared to stock, giving the F8X sharper handling dynamics and quicker throttle response. Each system is hand TIG-welded, with every joint polished for smooth internal flow. CNC-machined flanges and hangers, derived from 3D scan data, guarantee an exact factory fit with no cutting, welding, or modifications required.
The exhaust terminates in quad 4-inch tips, significantly larger than OEM, designed to fill the diffuser perfectly. Offered in polished stainless, black chrome, carbon fiber, or burnt titanium, the tips are both a visual statement and an acoustic tuning element, shaped to sharpen the crispness of the sound at higher revs. From idle burbles to high-RPM shrieks, this system creates a soundtrack that is unmistakably exotic yet unmistakably BMW.
2.75" equal-length midsection for pulse balancing & tonal refinement
H-crossover for torque enhancement & smoother frequency blending
3.5" axle-back section with dual-path valve control
OEM valve integration with optional independent controller
Quad 4" tips in multiple premium finishes
Bolt-on installation with CNC precision fitment
Hand TIG-welded craftsmanship for strength and beauty
This isn’t simply an exhaust replacement — it’s a reinvention of how the F8X should sound. By combining motorsport-inspired engineering with artistry in fabrication, we’ve created a system that transforms every drive. Quiet and composed when you need discretion, spine-tingling and exotic when you demand excitement, the Yonristic Cat-Back delivers a level of duality and refinement that the factory system could never achieve.
Your S55 finally has the voice it was born to sing with.
The Yonristic Performance F8X Exhaust is engineered for BMW F8X M3 and M4 owners who want a stronger driving feel and a more refined exhaust note. Its equal-length design helps balance exhaust flow, which supports smoother pulse delivery and a more consistent sound under acceleration. This setup is ideal for drivers who want performance gains without losing everyday usability. By improving flow efficiency, the system can help the engine breathe better while also giving the car a more aggressive character. It is a smart upgrade for enthusiasts who value both engineering and sound quality.
This F8X Exhaust system is designed to deliver a deeper, cleaner, and more exciting tone that matches the personality of the BMW M platform. Compared with the factory setup, it offers a more engaging sound profile that becomes more noticeable during spirited driving, yet remains controlled enough for regular street use. The equal-length layout also supports sharper throttle response, making the car feel more direct and responsive. In addition to performance, the system adds a premium look to the underbody, reflecting the level of craftsmanship expected from a high-end performance part.
Whether your BMW F8X M3 or M4 is a daily driver, weekend car, or track-focused build, this exhaust system is made to fit a wide range of driving needs. Yonristic Performance focuses on quality and durability, so the system is built to handle demanding conditions while maintaining reliable long-term performance. For drivers who want a noticeable improvement without going too extreme, this exhaust offers an excellent balance of sound, flow, and practicality. If you are looking to enhance your BMW with a proven performance upgrade, the F8X Exhaust is a strong choice that delivers real driving excitement.
BMW F8X M3/M4 Equal-Length Exhaust System - Yonristic Performance - AISI304 Stainless Steel / (4) Chrome is backordered and will ship as soon as it is back in stock.
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Wrong fit or arrives damaged? Free replacement available
Install Type
Bolt-on
Requirement
Basic tools
Material
Carbon fiber
Built for Precision. Tuned for Emotion.
The S55 engine inside the F80 M3 and F82/F83 M4 is a marvel of engineering, but the factory exhaust leaves drivers divided. Thin, metallic rasp dominates the sound, muting the depth and richness this platform deserves. At Yonristic, we set out to change that — not just by making the car louder, but by engineering a system that redefines the way the S55 sings.
The system begins with a 2.75-inch dual midsection, engineered so that each bank of cylinders travels the same distance before merging. This equal-length layout transforms the character of the exhaust note, smoothing the harshness that plagues the stock system and replacing it with a balanced, refined resonance. Midway through, a carefully designed H-style crossover improves exhaust pulse timing and enhances midrange torque, while also giving the note a deeper, fuller texture. From there, gases flow into a 3.5-inch rear section that splits into four outlets, creating a commanding finish both in tone and aesthetics.
At the rear, a dual-path valve system gives you control over the car’s personality. Open the valves and exhaust gases are released through an almost straight-through pathway, delivering a raw, aggressive note with sharp overrun crackles and a rising pitch that builds to an exotic wail. Close the valves and gases are routed into a multi-chamber muffler, engineered with tuned resonators to absorb unwanted frequencies and create a smooth, composed soundtrack for comfortable cruising. Integration with the OEM electronic valve system means instant control with your factory drive modes, but an independent controller is also available for additional flexibility.
The Yonristic F8X Cat-Back is available in two premium constructions: AISI 304 stainless steel for long-term durability, or Grade 5 titanium (Ti-6Al-4V) for those seeking extreme weight savings and sharper tonal character. In titanium form, the system sheds nearly 50 pounds compared to stock, giving the F8X sharper handling dynamics and quicker throttle response. Each system is hand TIG-welded, with every joint polished for smooth internal flow. CNC-machined flanges and hangers, derived from 3D scan data, guarantee an exact factory fit with no cutting, welding, or modifications required.
The exhaust terminates in quad 4-inch tips, significantly larger than OEM, designed to fill the diffuser perfectly. Offered in polished stainless, black chrome, carbon fiber, or burnt titanium, the tips are both a visual statement and an acoustic tuning element, shaped to sharpen the crispness of the sound at higher revs. From idle burbles to high-RPM shrieks, this system creates a soundtrack that is unmistakably exotic yet unmistakably BMW.
2.75" equal-length midsection for pulse balancing & tonal refinement
H-crossover for torque enhancement & smoother frequency blending
3.5" axle-back section with dual-path valve control
OEM valve integration with optional independent controller
Quad 4" tips in multiple premium finishes
Bolt-on installation with CNC precision fitment
Hand TIG-welded craftsmanship for strength and beauty
This isn’t simply an exhaust replacement — it’s a reinvention of how the F8X should sound. By combining motorsport-inspired engineering with artistry in fabrication, we’ve created a system that transforms every drive. Quiet and composed when you need discretion, spine-tingling and exotic when you demand excitement, the Yonristic Cat-Back delivers a level of duality and refinement that the factory system could never achieve.
Your S55 finally has the voice it was born to sing with.
The Yonristic Performance F8X Exhaust is engineered for BMW F8X M3 and M4 owners who want a stronger driving feel and a more refined exhaust note. Its equal-length design helps balance exhaust flow, which supports smoother pulse delivery and a more consistent sound under acceleration. This setup is ideal for drivers who want performance gains without losing everyday usability. By improving flow efficiency, the system can help the engine breathe better while also giving the car a more aggressive character. It is a smart upgrade for enthusiasts who value both engineering and sound quality.
This F8X Exhaust system is designed to deliver a deeper, cleaner, and more exciting tone that matches the personality of the BMW M platform. Compared with the factory setup, it offers a more engaging sound profile that becomes more noticeable during spirited driving, yet remains controlled enough for regular street use. The equal-length layout also supports sharper throttle response, making the car feel more direct and responsive. In addition to performance, the system adds a premium look to the underbody, reflecting the level of craftsmanship expected from a high-end performance part.
Whether your BMW F8X M3 or M4 is a daily driver, weekend car, or track-focused build, this exhaust system is made to fit a wide range of driving needs. Yonristic Performance focuses on quality and durability, so the system is built to handle demanding conditions while maintaining reliable long-term performance. For drivers who want a noticeable improvement without going too extreme, this exhaust offers an excellent balance of sound, flow, and practicality. If you are looking to enhance your BMW with a proven performance upgrade, the F8X Exhaust is a strong choice that delivers real driving excitement.
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.
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.
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.
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.
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.
Max, the Owner, started in his garage making E36 M3 tail lights in his own oven.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.