LABOR DAY ENDS TONIGHT — Up to 40% off. Shop your car
Best Seller
1 6
Ask a K2 Sales Tech

Ask a K2 Sales Tech

Verify parts fit & get product recommendations

Mon–Fri: 9 AM–5 PM EST

support@k2-industries.com Or ask via live chat
VERIFIED REVIEWS

BMW 3/4 Series M3/M4 F80/F82 304 Stainless Steel Burnt Tip Straight-through Catback 2015-2020

…
$1,299.99 $1,700.00 Save $400.01
  • Fitment verified for YOUR exact year/model/trim
  • Not sure? Email support@k2-industries.com 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 - Usually ships in 3-5 days
Detecting shipping cost...

*Disclaimer: Please input the exact details of your car to ensure precise fitment. Note that some of the components only fit certain models and engines.

K2 Industries  |  SKU: K2-053-BMW-125-EXH
100,000+ Happy Customers100,000+ Happy Customers
30-Day Returns30-Day Returns
One Year WarrantyOne Year Warranty
What to know before you install
Bolt-on install Install Type Bolt-on
Install requirement Requirement Basic tools
Stainless steel Material Stainless steel
What to expect
Most intake and exhaust parts are bolt-on, but rusted hardware, tight access, and sensor placement can affect install time.
Material note
Stainless steel helps resist corrosion and is used where strength and durability matter.
Not sure what this install needs? Email support@k2-industries.com before ordering.
LIVE NOW: Automatic entries into the E90 Giveaway!
Every $1 Spent = Entries into our E90 Giveaway

Details

Transform Your BMW M3/M4 F80/F82 with 304 Stainless Steel Straight-through Catback Exhaust - Premium Burnt Tip Design (2015-2020)

Elevate your BMW's performance with our exclusive 304 stainless steel straight-through catback exhaust system. Join thousands of discerning M3 and M4 owners who have transformed their S55-powered vehicles with premium exhaust technology that delivers aggressive sound enhancement, improved performance, and sophisticated burnt tip aesthetics.

✓ 304 Stainless Steel ✓ Burnt Titanium-Style Tips ✓ Straight-through Design ✓ Performance Optimized

Experience the perfect fusion of performance engineering and sophisticated aesthetics with our meticulously crafted straight-through catback system. Featuring premium 304 stainless steel construction and distinctive burnt titanium-style tips, this exhaust transforms your M3 or M4's sound signature while optimizing flow characteristics to unlock the full potential of BMW's legendary S55 twin-turbo engine.

Premium Construction Elements
  • 304 Stainless Steel Construction - Aircraft-grade material ensures exceptional durability and corrosion resistance
  • Burnt Titanium-Style Tips - Sophisticated heat-treated finish creates premium aesthetic appeal
  • Straight-through Flow Design - Optimized internal architecture maximizes exhaust gas velocity
  • Precision Mandrel Bending - Smooth radius bends eliminate turbulence and maintain consistent flow
Performance Specifications
  • Enhanced Flow Characteristics - Straight-through design reduces backpressure for improved S55 efficiency
  • Aggressive Sound Enhancement - Deep, resonant tone showcases the twin-turbo S55 engine character
  • Optimized Diameter - Precisely engineered bore size balances performance with sound quality
  • Weight Reduction - Lightweight design reduces unsprung mass for improved handling dynamics
Vehicle Fitment
Model Generation Body Code Year Engine
M3 Sedan 5th Generation F80 2015-2020 S55 3.0L Twin-Turbo I6
M4 Coupe 1st Generation F82 2015-2020 S55 3.0L Twin-Turbo I6
M4 Convertible 1st Generation F83 2015-2020 S55 3.0L Twin-Turbo I6
S55 Engine Optimization
  • Twin-Turbo Enhancement - Reduced backpressure allows turbos to operate more efficiently
  • Improved Throttle Response - Enhanced exhaust flow delivers more immediate power delivery
  • Temperature Management - Superior heat dissipation protects performance components
  • Sound Character - Unleashes the distinctive S55 twin-turbo growl and aggression
Design & Aesthetics
  • Burnt Tip Finish - Heat-treated titanium-style coloring creates premium visual impact
  • Single Exit Configuration - Clean, performance-focused design with race-inspired aesthetics
  • Stainless Steel Polish - Mirror-finish sections complement the burnt tip treatment
  • OEM Integration - Designed to seamlessly integrate with factory mounting points
Package Contents
  • 1 Complete 304 Stainless Steel Catback Exhaust System
Important Performance Notice
S55 ENGINE SPECIFIC: This catback exhaust system is specifically engineered for the BMW S55 3.0L twin-turbo engine found in F80 M3 and F82/F83 M4 models. Optimal performance requires proper installation and may benefit from ECU tuning for maximum power gains.
Installation Details
  • Installation Type: Catback replacement from catalytic converters to exhaust tips
  • Skill Level: Advanced - professional installation strongly recommended
  • Tools Required: Automotive lift, cutting tools, welding equipment may be needed
  • Time Required: Approximately 3-4 hours for complete installation
  • Modifications: May require custom fitting for optimal performance and sound
Sound Characteristics
  • Aggressive Idle - Deep, rumbling tone at idle showcases S55 character
  • Linear Acceleration - Progressive sound increase matches throttle input
  • Turbo Enhancement - Accentuates turbo spooling and blow-off sounds
  • Track-Ready Volume - Substantial sound increase for performance driving experience
Material Specifications
  • 304 Stainless Steel - Superior corrosion resistance and high-temperature durability
  • TIG Welded Joints - Professional welding ensures leak-free performance
  • Heat-Treated Tips - Specialized finishing process creates authentic burnt appearance
  • Reinforced Mounting - Strategic bracing prevents stress cracking and premature failure
Expert Support & Warranty
  • Live Expert Assistance - Team of BMW performance specialists ready to provide technical guidance
  • Professional Installation Support - Recommendations for certified installers in your area
  • Quality Assurance - Rigorous quality control ensures consistent performance and fitment
  • Performance Guidance - Expert advice on complementary modifications for maximum gains
Shipping Information
  • Manufacturing + Shipping:  3-5 weeks to manufacture the product. 1-2 weeks for shipping
  • Freight Shipping: Large exhaust systems require specialized freight delivery
  • International Shipping: Available worldwide with calculated rates at checkout
  • Secure Packaging: Professional protective packaging ensures safe delivery of complete system
Our Promise To You

Every 304 stainless steel catback exhaust system is backed by our commitment to performance excellence and customer satisfaction. This premium exhaust solution represents the perfect fusion of sophisticated aesthetics, aggressive sound enhancement, and performance optimization that transforms your S55-powered M3 or M4 into the ultimate expression of BMW motorsport heritage.

Ready to unleash your M's potential?

  1. Verify your vehicle is an F80 M3 or F82/F83 M4 with S55 engine (2015-2020)
  2. Consider professional installation for optimal performance and fitment
  3. Plan for potential ECU tuning to maximize power gains
  4. Complete your order for priority processing and premium S55 transformation

Join the elite community of M3 and M4 owners who have unleashed their S55 engine's true potential with premium straight-through catback exhaust systems. This sophisticated exhaust solution delivers the aggressive sound, enhanced performance, and burnt tip aesthetics that transform your BMW into the ultimate expression of motorsport engineering.

Unleash the S55 beast - Order now to experience the perfect combination of performance optimization and aggressive sound that defines the ultimate M3/M4 upgrade.

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.

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

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

You’re not buying from a warehouse. You’re buying from someone who builds cars just like you do.

Founder photo

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
GuaranteePerfect fit guaranteed

See Why Customers Love K2 Industries

Frequently Asked Questions

Why Buy from K2 Industries

What makes K2 Industries more than just a parts supplier?

We’re a team of USA-based car enthusiasts committed to helping you get your build right the first time. With our deep product knowledge and close relationships with trusted manufacturers, we ensure you receive high-quality parts that perform. We’re here to support you before, during, and after your purchase, providing personalized advice, part compatibility checks, and responsive customer service. When you buy from us, you’re joining a community that cares as much about your car as you do.

How do I know which parts are best for my car and goals?

Answer: Our team can provide personalized mod plans to match your performance and style goals. Whether you’re building for speed, aesthetics, or both, we’ll help you select the right parts for your vision. Contact us to discuss your project!

Do You Have Financing Options?

Answer: Yes, we offer flexible financing options to make it easier for you to upgrade your vehicle without paying the full amount upfront. Choose our financing option at checkout to split your purchase into manageable payments, so you can start your build now and pay over time.

Visit our FULL FAQ Page

https://www.k2-industries.com/a/faq

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 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.

Other

Any question?

You can contact us through our contact page! We will be happy to assist you.

Customer Reviews

Overall rating: 4.5 / 5 from 926 reviews.

Customer video review of Shipping Insurance

GREAT EXPERIENCE SHIPPING WAS QUICK IM ENJOYING THE PRODUCT

Emperor A. 5/5 Verified

Shipping Insurance

Customer photo review of NTXGlow RGB Tail Lights (2015-2023 Ford Mustang)

Took 2 weeks to deliver with standard shipping. But well worth the wait. Install took 25 minutes with minimal tools and the lights look amazing. Fitment is perfect and the quality is excellent. Its kinda pricey but you get what you pay for with ntxglow products. Highly recommend!

Michael O. 5/5

NTXGlow RGB Tail Lights (2015-2023 Ford Mustang)

Customer photo review of 2007-2010 BMW 3 Series M2 Look Front Bumper - FRP

Make better effort. M2- Style Bumper The product was terrible. And no it wasn’t cause of the shipment. Every edge wasn’t straight nor correct. Won’t fit either unless you can weld fiber glass. Don’t recommend. Thing is just botched. For 700$ this product is terrible

Connor F. 1/5

2007-2010 BMW 3 Series M2 Look Front Bumper - FRP

Customer photo review of Shipping Insurance

Wing came in perfect condition! No chip paint, no scratches. Amazing service!

Natalie P. 5/5 Verified

Shipping Insurance

Customer photo review of Spec-D Projector Headlights Ford F150 (04-08) Mark LT (06-08) Halo Black / Smoked / Chrome

They look amazing, and after using ChatGPT to help me understand how to install them (because the instructions were not very helpful whatsoever), I’m glad with how they turned out. My problems are that the lights aren’t too bright, the instructions weren’t helpful, and the arrival date was wrong, even if they arrived early.

Caleb B. 4/5 Verified

Spec-D Projector Headlights Ford F150 (04-08) Mark LT (06-08) Halo Black / Smoked / Chrome

Customer photo review of 2015-2021 Subaru WRX NBR Concept Style Trunk - Carbon Fiber

Unfortunately was damaged in transit. I was so excited I discarded the box and stuff without a thought and only took pictures of the damaged parts as I unboxed it. Seller needs pictures of the shipping label and box as well for any claims/partial refunds. The UPS guy that dropped it off didn't require me to sign for it like it said, just left it at my door. FYI for anyone buying something like this take pictures of EVERYTHING. I installed the trunk anyways cause I already had my trunk off. Decent fitment, no issues closing or opening the trunk but the trunk noticeably sits a little higher than the rear fenders.

Joshua H. 3/5 Verified

2015-2021 Subaru WRX NBR Concept Style Trunk - Carbon Fiber

Customer photo review of Front OEM Cover Overlays - *2024+ Tacoma / *2025+ 4Runner

This sticker sucks! Nice looking until you try to install it. Other stickers I have purchased come with a cover OVER the sticker. Peel the sticker and cover off the backing. Position the sticker over the object and press on. Usually includes a tool to make sure the sticker is firmly installed. Peel off the cover and done. No wrinkles. Not so with your product. No cover. No way to remove the backing while installing. A wrinkled mess.

Chris W. 1/5

Front OEM Cover Overlays - *2024+ Tacoma / *2025+ 4Runner

Customer photo review of 1993-1997 Honda Del Sol Redclear Tail Light Lenses

This isn’t on K2, but the lenses came In which I was thrilled about. I’d already removed my OEM lenses from their housings. The passenger side lense fit well and mostly flush. The driver side, however, looks like it was slightly warped and caused poor fitment and what looks like a small dip in the red portion of the lense. I had no choice but to use them, as my OEM lenses were no longer usable. It can be very difficult to get replacement lenses in a timely manner for a Del Sol. I drive my car everyday, so I had to just go with it. Again, not a K2 issue but presumably the manufacturer.

Thom T. 2/5 Verified

1993-1997 Honda Del Sol Redclear Tail Light Lenses

Customer video review of 2003-2008 Nissan 350Z N4 Style Rear Bumper Cover - FRP

This rear bumper fits great the only thing is the trunk button on the bottom is cut a little to wide but that’s an easy fix it looks great and definitely makes the rear look more aggressive. I love it!

Donovan T. 5/5 Verified

2003-2008 Nissan 350Z N4 Style Rear Bumper Cover - FRP

Customer photo review of Upgraded VANOS Oil Supply Line – M52 / M54 Engines (E36, E46, E39, E60, X3, X5, Z3, Z4)

The box was a little crushed, but the line was packed well and it wasn't a problem. The instructions are 3 pages of color pictures and lots of explanations. Very nice. The line itself is a very nice bit of kit with a swivel AN line end that allows a No-tension install. No leaks so far and it looks great. It came with new banjo bolts and copper crush washers. The only criticism I have is that I would have liked this hose coated in black so it disappears like the original, but it does look good, so I don't mind.

Andrew H. 5/5 Verified

Upgraded VANOS Oil Supply Line – M52 / M54 Engines (E36, E46, E39, E60, X3, X5, Z3, Z4)

Customer video review of 2022-2025 Subaru BRZ Toyota GR86 TRD Style Trunk Spoiler

No damages on the product, and better return policy, I tried to get an exchange and they were charging me a %25 restocking fee when my product was damaged and dented, the communication on the matter was taking about 2 weeks as well.

Leslie O. 1/5 Verified

2022-2025 Subaru BRZ Toyota GR86 TRD Style Trunk Spoiler

Shop our Garage Sale

View Products >>