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K2 Industries  |  SKU: K2-064-BMW-125-EXH

BMW 3/4 Series M3/M4 G80/G82 Stainless Steel Engine Header Downpipe 2021+

€1.642,61 €2.247,79
Shipping calculated at checkout.

Product Warranty

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.

Delivery and Shipping

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.

Happy Driving!

Description

Unleash Your BMW G80/G82 M3/M4 with Premium Stainless Steel Race Downpipes - S58 Performance Enhancement (2021+)

Transform your S58's performance with our exclusive stainless steel race downpipes. Join thousands of discerning M3 and M4 owners who have unleashed their vehicle's true potential with premium exhaust solutions that deliver significant power gains, aggressive exhaust notes, and superior build quality.

✓ SS304 Construction ✓ Free-Flow Design ✓ Significant Power Gains ✓ Professional Quality

Experience the pinnacle of S58 performance enhancement with our meticulously engineered race downpipes. By eliminating restrictive catalytic converters and optimizing exhaust flow, these premium 304 stainless steel downpipes reduce backpressure, accelerate turbo spool, and unlock substantial horsepower and torque gains while delivering the aggressive exhaust note your M3 or M4 deserves.

Premium Construction Elements
  • SS304 Stainless Steel - Professional-grade material withstands extreme temperatures and harsh driving conditions
  • TIG-Welded Construction - Hand-crafted precision welding ensures leak-free performance and structural integrity
  • Mandrel-Bent Piping - Smooth radius bends minimize turbulence and maximize exhaust flow efficiency
  • CNC-Machined Flanges - Precision-engineered connections guarantee perfect OEM fitment and seal
Performance Specifications
  • Significant Power Gains - Unleash 50-100+ HP and 60-100+ TQ with proper ECU tuning
  • Reduced Backpressure - Free-flow design eliminates restrictive factory catalytic converters
  • Faster Turbo Spool - Improved throttle response and quicker boost buildup throughout RPM range
  • Aggressive Exhaust Note - Enhanced sound profile with more pronounced turbo and exhaust tones
Vehicle Fitment
Model Generation Body Code Year Engine Configuration
M3 6th Generation G80 2021+ S58 3.0L Turbo RWD & AWD
M3 Competition 6th Generation G80 2021+ S58 3.0L Turbo RWD & AWD
M4 3rd Generation G82 2021+ S58 3.0L Turbo RWD & AWD
M4 Competition 3rd Generation G82 2021+ S58 3.0L Turbo RWD & AWD
Engineering Advantages
  • Optimized Flow Design - Flow-tested engineering delivers maximum exhaust velocity and efficiency
  • Heat Management - Premium stainless steel construction withstands extreme thermal stress
  • Turbo Longevity - Reduced backpressure extends turbocharger lifespan and reliability
  • Weight Reduction - Lighter than factory system improves overall vehicle dynamics
Package Contents
  • 1 Complete Set of SS304 Stainless Steel Downpipes (Left & Right)
Important Performance Notice
RACE USE ONLY: These downpipes are designed for off-road use, closed-course racing, and competition environments only. This product eliminates catalytic converters and is not legal for street use in most jurisdictions. Professional installation and ECU tuning required for optimal performance. Check local regulations before purchase.
Installation Details
  • Installation Type: Direct bolt-on replacement for OEM downpipes
  • Skill Level: Advanced - professional installation strongly recommended
  • Tools Required: Lift/jack stands, exhaust tools, torque wrench, penetrating oil
  • Time Required: Approximately 3-4 hours for complete installation
  • ECU Tuning: Required to prevent check engine lights and achieve optimal performance gains
Performance Benefits
  • Untuned Gains - Experience 20-30 HP and 20-30 TQ improvements even without ECU tuning
  • Tuned Potential - Unlock 50-100+ HP and 60-100+ TQ with professional ECU calibration
  • Enhanced Throttle Response - Immediate power delivery and improved mid-range acceleration
  • Superior Sound - Aggressive exhaust tone with pronounced turbo spool and burble effects
Quality Assurance
  • 100% Hand-Made - Each downpipe meticulously crafted by certified TIG welders
  • Flow-Tested Design - Engineered and validated on actual S58-powered vehicles
  • Perfect Fitment - Manufactured using precision jigs for guaranteed bolt-on installation
  • Premium Materials - Only certified 304 stainless steel used throughout construction
Expert Support & Warranty
  • Live Expert Assistance - Team of BMW performance specialists ready to provide technical guidance
  • Quality Guarantee - Professional-grade construction backed by rigorous quality control
  • Fitment Assurance - Engineered specifically for G80/G82 S58 platform perfection
  • K2 Industries Quality - Premium manufacturing standards ensure exceptional performance and reliability
Shipping Information
  • Manufacturing + Shipping:  3-5 weeks to manufacture the product. 1-2 weeks for shipping
  • Tracking: Full tracking provided with every order
  • International Shipping: Available worldwide with calculated rates at checkout
  • Secure Packaging: Professional protective packaging ensures safe delivery of exhaust components
Our Promise To You

Every stainless steel race downpipe is backed by our commitment to excellence and customer satisfaction. These premium exhaust components represent the pinnacle of S58 performance enhancement, delivering the significant power gains, aggressive exhaust notes, and superior build quality that transforms your G80 M3 or G82 M4 into the ultimate driving machine.

Ready to unleash your S58's potential?

  1. Verify your vehicle is a 2021+ G80 M3 or G82 M4 with S58 engine
  2. Arrange professional installation with experienced BMW performance shop
  3. Plan for ECU tuning to maximize performance gains and prevent check engine lights
  4. Complete your order for priority processing and performance transformation

Payment & Security

Payment methods

  • Amazon
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  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

About K2 Industries

We're a team of passionate car enthusiasts located in South Florida. We are dedicated to assisting you in making your dream build a reality!

Read more

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.