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K2 Industries  |  SKU: K2-057-BMW-125-EXH

BMW 3/4 Series M3/M4 F80/F82 304 Stainless Steel Exhaust Downpipe 2015-2020

€1.560,36
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

Transform Your BMW M3/M4 F80/F82 with Premium 304 Stainless Steel Exhaust Downpipes - High-Performance S55 Upgrade (2015-2020)

Unleash your S55's potential with our exclusive 304 stainless steel downpipe collection. Join thousands of discerning M3 and M4 owners who have transformed their vehicles with precision-engineered exhaust solutions that deliver substantial power gains, enhanced turbo response, and an aggressive exhaust note that commands attention.

✓ 304 Stainless Steel ✓ Mandrel Bent ✓ TIG Welded ✓ Significant Power Gains

Experience the ultimate S55 engine transformation with our meticulously crafted 304 stainless steel downpipes. By eliminating restrictive factory catalytic converters, these high-flow downpipes dramatically reduce back pressure, resulting in faster turbo spool, substantial power increases, and an aggressive exhaust note that transforms your M3 or M4 into the performance machine it was meant to be.

Premium Construction Elements
  • 304 Stainless Steel Construction - Premium-grade material ensures exceptional durability and corrosion resistance
  • Mandrel-Bent Design - Smooth radius bends minimize turbulence and maximize exhaust flow
  • TIG Welded Joints - Professional-grade welding ensures structural integrity and long-lasting performance
  • Precision CNC Flanges - Machined flanges provide seamless fitment and optimal sealing
Performance Benefits
  • Substantial Power Gains - 20-50+ horsepower and 25-60+ torque increases when properly tuned
  • Enhanced Turbo Response - Faster spool-up and improved transient boost response
  • Reduced Back Pressure - Eliminates restrictive factory catalysts for optimal exhaust flow
  • Aggressive Exhaust Note - Deeper, more commanding sound that reflects your M's performance
Vehicle Fitment
Model Generation Body Code Year Engine
M3 Sedan 5th Generation F80 2015-2020 S55 3.0L Twin Turbo
M4 Coupe 1st Generation F82 2015-2020 S55 3.0L Twin Turbo
M4 Convertible 1st Generation F83 2015-2020 S55 3.0L Twin Turbo
Technical Specifications
  • Material Grade - T-304 high-grade stainless steel with superior heat resistance
  • Pipe Diameter - Optimized 3" to 3.5" design for maximum flow without bottlenecks
  • Wall Thickness - 1.6mm wall construction for durability and weight optimization
  • Flow Design - Full-diameter construction minimizes restrictions and flow loss
Engineering Excellence
  • CAD/CAM Designed - Computer-aided design ensures optimal flow characteristics and fitment
  • Back-Purged Welding - Advanced TIG welding with argon back-purging prevents contamination
  • Smooth Flow Transitions - Gradual diameter changes eliminate turbulence and pressure drops
  • Flexible Joints - Strategic flex sections reduce stress on mounting points and turbochargers
Package Contents
  • 1 Pair of 304 Stainless Steel Downpipes (Left & Right)
Important Performance Notice
TUNING REQUIRED: Professional ECU tuning is required to realize full performance potential and prevent check engine lights. These downpipes are designed for track/off-road use and may not be emissions compliant in all jurisdictions.
Installation Details
  • Installation Type: Direct bolt-on replacement requiring no permanent modifications
  • Skill Level: Advanced - professional installation strongly recommended
  • Tools Required: Professional lift, exhaust tools, and torque specifications
  • Time Required: 3-5 hours depending on experience and shop conditions
  • Compatibility: Works with both LHD and RHD models without modification
Turbocharger Benefits
  • Reduced Turbo Stress - Lower back pressure extends turbocharger life and reliability
  • Improved Spool Characteristics - Faster turbo response across the entire RPM range
  • Enhanced Boost Response - Better transient response for more immediate power delivery
  • Temperature Reduction - Lower exhaust gas temperatures protect engine components
Sound & Character
  • Aggressive Exhaust Note - Deep, commanding sound that matches your M's performance
  • Turbo Whistle Enhancement - More pronounced turbo sounds for authentic performance character
  • Reduced Rasp - Smooth flow design minimizes unwanted high-frequency noise
  • Volume Control - Pairs perfectly with aftermarket exhaust systems for customizable sound
Expert Support & Warranty
  • Live Expert Assistance - Team of BMW performance specialists ready to provide technical guidance
  • Quality Assurance - Premium manufacturing standards with rigorous quality control
  • Fitment Guarantee - Precision-engineered for perfect OEM-level fitment
  • Professional Support - Technical assistance available for installation and tuning recommendations
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 packaging ensures safe delivery of precision exhaust components
Our Promise To You

Every 304 stainless steel downpipe upgrade is backed by our commitment to excellence and performance. These precision-engineered exhaust components represent the perfect fusion of premium materials, advanced manufacturing, and performance optimization that transforms your S55 engine with substantial power gains, enhanced turbo response, and the aggressive sound that defines true M performance.

Ready to unleash your S55's potential?

  1. Verify your vehicle model (F80 M3, F82/F83 M4) and S55 engine
  2. Plan for professional installation and ECU tuning
  3. Choose your shipping preferences at checkout
  4. Complete your order for priority processing and performance transformation

Payment & Security

Payment methods

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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.