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BMW 3/4 Series M3/M4 G80/G82/G8X Titanium Valved Catback 2021+

$3,399.99 $4,199.99 Save $800.00
In Stock Usually ships in 3-5 days
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*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: K2-059-BMW-125-EXH
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Transform Your BMW M3/M4 G80/G82/G8X with Premium Titanium Valved Catback Exhaust - Motorsport Performance System (2021+)

Unleash the full potential of your S58 engine with our exclusive titanium valved catback exhaust collection. Join thousands of discerning M3 and M4 owners who have transformed their G8X vehicles with cutting-edge titanium technology that delivers dramatic weight reduction, enhanced performance, and the aggressive soundtrack your BMW deserves.

✓ Grade 5 Titanium ✓ Electronic Valve ✓ 60% Weight Reduction ✓ Performance Gains

Experience the pinnacle of exhaust engineering with our precision-crafted titanium valved catback system. Featuring Grade 5 titanium construction, advanced electronic valve technology, and motorsport-inspired design, this premium exhaust transforms your G80/G82 with the raw character and aggressive sound that the S58 twin-turbo inline-6 deserves while delivering significant weight savings and performance enhancements.

Premium Titanium Construction
  • Grade 5 Titanium Pipes - Aerospace-grade Ti-6Al-4V alloy delivers exceptional strength-to-weight ratio
  • Dramatic Weight Reduction - Up to 60 pounds lighter than factory exhaust for improved performance
  • Corrosion Resistance - Superior titanium properties ensure lasting durability and appearance
  • Precision TIG Welding - Expert craftsmanship with high-strength welds for motorsport reliability
Advanced ELECTRONIC VALVE Technology
  • Electronic Valve Control - Seamless integration with OEM valve systems and drive modes
  • Dual Sound Profiles - Refined civility when closed, aggressive motorsport edge when open
  • On-Demand Performance - Transform sound character at the touch of a button
  • Vacuum Valve Technology - Precise control with standalone controller module integration
Vehicle Fitment
Model Generation Body Code Year Engine
M3 / M3 Competition 6th Generation G80 2021+ S58 3.0L Twin-Turbo I6
M3 Competition xDrive 6th Generation G80 2021+ S58 3.0L Twin-Turbo I6
M4 / M4 Competition 3rd Generation G82 2021+ S58 3.0L Twin-Turbo I6
M4 Competition xDrive 3rd Generation G82 2021+ S58 3.0L Twin-Turbo I6
M4 Convertible 3rd Generation G83 2021+ S58 3.0L Twin-Turbo I6
Performance Enhancement
  • Optimized Flow Design - Mandrel-bent piping maximizes exhaust flow and reduces backpressure
  • Power Gains - Enhanced horsepower and torque throughout the rev range
  • Improved Throttle Response - Reduced restriction delivers sharper engine response
  • High-Flow Architecture - Precision-engineered for maximum S58 performance potential
Sound Character
  • Aggressive Motorsport Tone - Raw S58 character with sophisticated high-pitch notes
  • Enhanced Cold Starts - Dramatic startup sequence showcases twin-turbo symphony
  • Dynamic Range - From refined cruising to full-throttle aggression
  • No Drone Design - Engineered to eliminate unwanted cabin resonance
Package Contents
  • Complete Titanium Catback Exhaust System
Important Installation Notice
PROFESSIONAL INSTALLATION RECOMMENDED: This high-performance titanium exhaust system requires precise installation and valve integration. Professional installation is highly recommended to ensure optimal performance, proper valve operation, and warranty coverage.
Installation Details
  • Installation Type: Direct catback replacement with OEM valve integration
  • Skill Level: Advanced - professional installation strongly recommended
  • Tools Required: Professional exhaust tools and lift equipment
  • Time Required: 3-4 hours for complete installation and valve integration
  • Reversibility: 100% reversible - can return to stock configuration anytime
Technical Specifications
  • Material - Grade 5 Titanium (Ti-6Al-4V aerospace alloy)
  • Weight Reduction - 50-60 pounds lighter than factory exhaust
  • Pipe Diameter - Optimized sizing for maximum S58 performance
  • Construction - Fully mandrel-bent with precision TIG welds
  • Valve Technology - Electronic integration with OEM systems
  • Finish - Natural titanium with heat discoloration resistance
Expert Support & Warranty
  • Live Expert Assistance - Team of BMW M specialists ready to provide technical guidance and installation support
  • Premium Quality Guarantee - Aerospace-grade titanium construction with rigorous quality control
  • Professional Installation Network - Access to certified installation partners nationwide
  • K2 Industries Excellence - Premium aftermarket solutions with dedicated customer support
Shipping Information
  • Manufacturing + Shipping:  3-5 weeks to manufacture the product. 1-2 weeks for shipping
  • Freight Shipping: Professional freight delivery for complete exhaust systems
  • International Availability: Worldwide shipping with calculated rates at checkout
  • Secure Packaging: Specialized protective packaging for titanium exhaust components
Our Promise To You

Every titanium valved catback exhaust represents the pinnacle of automotive engineering and craftsmanship. Experience the ultimate transformation of your G80/G82 M3/M4 with aerospace-grade titanium construction, advanced electronic valve technology, and the aggressive soundtrack that the S58 engine was meant to deliver. This is more than an exhaust upgrade - it's a complete sensory transformation that elevates every drive.

Ready to unleash your S58's potential?

  1. Verify your vehicle model (G80 M3, G82 M4, or G83 M4 Convertible)
  2. Consider professional installation for optimal performance and warranty
  3. Select your preferred exhaust tip finish and configuration
  4. Complete your order for priority processing and motorsport transformation
What to know before you install
Bolt-on install Install Type Bolt-on
Install requirement Requirement Basic tools
What to expect
Most intake and exhaust parts are bolt-on, but rusted hardware, tight access, and sensor placement can affect install time.
Not sure what this install needs? Email support@k2-industries.com before ordering.
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Fitment: Vehicle fitment is listed in the title and description. Not sure it fits yours? Email us and we’ll confirm it for you.

Shipping, returns & warranty
Check vehicle compatibility

Check the product fitment notes for your year, model and trim

Need help choosing?

Not sure? Email support@k2-industries.com for a real specialist to help you order

Installation questions?

Installation questions? Email our team before or after your purchase

Warranty details

Questions about warranty coverage? Our team can walk you through it. Contact us

Return policy

See the return policy for this item’s details. Questions? We’re happy to help before you order.

Read return policy · Contact us

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.

See Why Customers Love K2 Industries

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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.

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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!

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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.

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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 help
Delivery issue support
Real Experts Answer the Phone
Post-Purchase Installation Support
Curated Quality
Return policy
K2 Industries
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Check seller terms
K2 Industries
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Pre-order fitment help
Delivery issue support
Check seller terms
Real Experts Answer the Phone
Post-Purchase Installation Support
Curated Quality
Return policy
Check seller terms
Add to Cart
GuaranteeCheck compatibility before ordering

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

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.

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