Porsche 718 GT4 / Boxster Spyder – Valved Exhaust System

Titanium Rear Section • F1 Race Headers • OEM Valve Integration

Overview

The Porsche 718 GT4 and Boxster Spyder are outstanding driver’s cars, but their factory exhaust note lacks the character and intensity enthusiasts expect. Valvetronic Designs changes that. Drawing from our development of the 992 GT3 RS and GT4 RS platforms, this valved exhaust system injects the high-pitch exotic tone Porsche purists crave—transforming the flat stock sound into something truly spine-tingling.

This system blends lightweight titanium craftsmanship, race-inspired headers, and OEM-level integration to deliver a raw, emotional sound without compromising drivability.

Key Components

Signature Titanium Rear Section

• Crafted from premium Grade 5 titanium for extreme weight savings and durability.

• Features a center X-pipe to balance pulses and create a smoother, sharper high-pitched tone.

• Delivers the exotic character reminiscent of Porsche’s naturally aspirated GT engines.

T304 Stainless Steel Over-Axle Pipes

• Built with integrated heat shielding to protect surrounding components.

• Maintains durability under extreme temperatures while improving exhaust flow.

Free Flow F1 Race Headers

• Equal-length T304 stainless design, tuned for sharper pitch and higher-frequency tones.

• Unlocks the raw, motorsport-inspired wail similar to the 981 GT4 and GT3 engines.

OEM Valve Integration

• Fully compatible with Porsche’s PSE button via factory vacuum lines.

• Operates seamlessly:

  • Valves Open: Maximum flow, aggressive tone, exotic high-pitch sound.

  • Valves Closed: Routed through quad-chamber mufflers for significantly reduced volume, ideal for long drives or discreet use.

• Optional standalone controller included for independent valve control.

Why Upgrade?

From the factory, the 718 GT4 and Spyder sound muted and flat. Our system transforms the experience, pulling inspiration from Porsche’s greatest engines to create a soundtrack worthy of the chassis.

• Aggressive & Emotional: High-pitched notes reminiscent of a GT3.

• Daily Driveable: Docile when valves are closed, aggressive when open.

• Performance-Oriented: Optimized flow for sharper throttle response and improved tone.

Technical Highlights

• Weight Savings: 34.8 lbs lighter than stock.

• Precision TIG Welding: Hand-built for strength and beauty.

• Reversible Design: 100% bolt-on, return to stock anytime.

• OEM Valve Control: No compromises—factory operation retained.

Fitment

• 2020+ Porsche 718 Cayman GT4

• 2020+ Porsche 718 Boxster Spyder

• 2020+ Porsche 718 GTS (4.0)

⚠️ Note on Bracket Design:
Early 2020 GT4/Spyder models (built before February 2020) use different exhaust brackets than later models. Please check your car’s bracket style before ordering. For reference please see the this photo.

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 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.