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BMW 5 Series G30 304 Stainless Steel Valved Catback 2017-2023

$2,399.99
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: K2-074-BMW-125-EXH
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Transform Your BMW 5 Series G30 with Premium 304 Stainless Steel Valved Catback Exhaust - Performance & Sound Control (2017-2023)

Elevate your BMW's performance with our exclusive 304 stainless steel valved catback exhaust system. Join thousands of discerning G30 5-Series owners who have transformed their vehicles with precision-engineered exhaust technology that delivers dynamic sound control, enhanced performance, and uncompromising durability.

✓ 304 Stainless Steel ✓ Electronic Valve Control ✓ Performance Engineered ✓ Chrome Silver Tips

Experience the perfect fusion of sophisticated engineering and auditory exhilaration with our meticulously crafted valved catback exhaust system. Featuring premium T304 stainless steel construction for maximum durability, electronic valve technology for complete sound control, and performance-optimized design that reduces backpressure while maximizing flow, this system transforms your G30 into an engaging, responsive, and sonorous driving machine.

Premium Engineering & Design
  • T304 Stainless Steel Construction - Premium-grade material ensures exceptional strength, corrosion resistance, and polished finish
  • Electronic Valve Technology - Dual-actuated valves provide instant sound control and reliable performance
  • Performance-Optimized Design - Engineered to maximize exhaust flow and minimize backpressure for power gains
  • Chrome Silver Quad Tips - Premium finishing touches deliver sophisticated rear aesthetic
Dynamic Sound Control
  • Valves Closed Mode - Refined, comfortable tone perfect for daily commuting and early morning starts
  • Valves Open Mode - Aggressive, resonant roar with pronounced turbo spool and spirited exhaust note
  • Over 15 dB Sound Difference - Dramatic variation between modes for ultimate versatility
  • Complete Personality Control - Transform your vehicle's character at the touch of a button
Vehicle Fitment
Model Generation Body Code Year Engine
530i 7th Generation G30 2017-2023 2.0L I4 Turbo
540i 7th Generation G30 2017-2023 3.0L I6 Turbo (B58)
M550i xDrive 7th Generation G30 2018-2023 4.4L V8 Twin-Turbo (N63)
5 Series Touring 7th Generation G31 2017-2023 All Compatible Engines
Performance Specifications
  • Primary Pipe Diameter - 3.0-3.5" optimized sizing for maximum flow efficiency
  • Tip Configuration - Quad chrome silver tips for premium aesthetic impact
  • Weight Reduction - Lighter than factory exhaust, enhancing handling and efficiency
  • Power Gains - Improved exhaust flow delivers enhanced horsepower and torque output
System Components
  • Front Pipe Section - Precision-engineered for optimal exhaust routing
  • Mid-Pipe Assembly - Performance-optimized for reduced backpressure
  • Valved Muffler System - Electronic valve integration with sophisticated internals
  • Chrome Silver Tips - Quad configuration with premium polished finish
Premium Material Benefits
  • T304 Stainless Steel - Superior corrosion resistance withstands harsh weather and high temperatures
  • Long-Lasting Durability - Premium materials ensure extended lifespan and consistent performance
  • Precision TIG Welding - Hand-crafted construction by experienced fabricators
  • Polished Finish - Professional-grade appearance maintains aesthetic appeal over time
Package Contents
  • Complete Valved Catback Exhaust System (Front to Rear)
Important Installation Notice
PROFESSIONAL INSTALLATION RECOMMENDED: This exhaust system requires professional installation for optimal fitment and valve system integration. Proper installation ensures peak performance, sound quality, and valve operation.
Installation Details
  • Installation Type: Direct bolt-on catback replacement system
  • Skill Level: Advanced - professional installation strongly recommended
  • Tools Required: Professional automotive lift and exhaust tools
  • Time Required: Approximately 3-4 hours for complete installation
  • Valve Integration: Electronic valve system connects to factory controls or optional remote
Valve Control Options
  • Factory Integration - Compatible with OEM sport button/drive mode for seamless control
  • Instant Response - Electronic actuators provide immediate valve position changes
  • Dual-Valve Design - Independent control for optimized sound and performance
  • Reliable Operation - Proven electronic valve technology for consistent performance
Performance Benefits
  • Enhanced Horsepower - Reduced backpressure delivers measurable power gains
  • Improved Torque - Optimized exhaust scavenging enhances low-end and mid-range response
  • Throttle Response - Better exhaust flow improves engine responsiveness
  • Sound Character - Raw, unfiltered tone showcases turbo spool and engine character
Expert Support & Warranty
  • Live Expert Assistance - Team of BMW specialists ready to verify compatibility and provide technical guidance
  • Quality Assurance - Premium manufacturing standards with rigorous quality control
  • Fitment Guarantee - Engineered for precise OEM-level fit and finish
  • K2 Industries Support - Dedicated customer service for installation and product questions
Shipping Information
  • Manufacturing + Shipping:  3-5 weeks to manufacture the product. 1-2 weeks for shipping
  • Freight Shipping: Large exhaust systems ship via freight carrier
  • Tracking: Full tracking provided with every order
  • Secure Packaging: Professional protective packaging ensures safe delivery of complete system
  • Signature Required: Adult signature required for freight deliveries
Our Promise To You

Every premium valved catback exhaust system is backed by our commitment to excellence and customer satisfaction. Experience the perfect blend of sophisticated engineering, dynamic sound control, and performance enhancement that transforms your BMW G30 5-Series into an engaging, responsive driving machine that adapts to your every mood.

Ready to unleash your BMW's potential?

  1. Verify your G30 5-Series model and engine configuration
  2. Consider professional installation for optimal results
  3. Choose your shipping preferences at checkout
  4. Complete your order for priority processing and performance transformation
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.
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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

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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.

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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
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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
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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