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Titanium Rear Section • F1 Race Headers • OEM Valve Integration
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.
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.
Built with integrated heat shielding to protect surrounding components.
Maintains durability under extreme temperatures while improving exhaust flow.
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.
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.
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.
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.
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 Coverage
All products manufactured by Valvetronic Designs are guaranteed to be free from manufacturing defects in materials and workmanship at the time of sale. A manufacturing defect is defined as any characteristic of the product that arises during the manufacturing process which impairs its usability for the purposes for which it was designed and manufactured.
Products are guaranteed to fit and function as designed on their intended vehicle application, provided the vehicle has not been modified or incurred structural damage. Sound or tone is not a warrantable or returnable issue, as exhaust sound is subjective and not considered a defect.
Warranty Periods
Warranty Terms
Overall rating: 4.875 / 5 from 8 reviews.
Review topics: [].
"This was a beautiful piece and it would have been perfect. If the valve controllers themselves were angled forty five degrees from where you guys put them, which would make them exactly like the stock. The angle that you provided pushes them up into some of the heat shielding, which I needed to bend out of the way. And I think I still need to bend some more because it sometimes touches and causes a sound and vibration"
"Order this kit on Black Friday to enjoy the savings and I’m sure glad I did. It has woken my Porsche 718 Spyder and now drive around with a smile from ear to ear 💪💪💪. Sorry I didn’t pull the trigger before."
"Installed on my 2022 Spyder and it sounds like a gt3 now. Sounds glorious."
"a little bit of drone btwn 2-3k rpm, but otherwise nice sound and much better off throttle burbles and hot starts than factory. Overall cooler sound for sure."
"Installed this exhaust and would describe the open valve tone as beautiful, especially when listening to it from outside of the car. The primary benefit of this is that it sounds more like a super-car with the high pitched titanium ring you expect to hear from an exotic. The valve closed drone can be a bit annoying at low RPM's, but nothing is perfect. Keeping the revs above 3000 RPM will pay off and keep you smiling."
"I have the titanium backbox with catted headers and OAPs from another aftermarket manufacturer. The backbox really was the missing link. The car was loud before but the tone was boring and one-dimensional. Now it howls at high RPMs and sounds thick down low. It’s just amazing."
"No longer miss my 981 GT4 after getting this setup on my 718. The one missing piece was the sound, even though it isn't bad. The Valvetronic full race setup gives you a street legal RSR sounding menace. Really opens up that 4. 0L flat six German marvel and keeps it tame without losing factory valve controller."
"loving the set up. Went with the Axel pipes and the valved rear section and I wish this car came like this from factory. Coming from my 997. 2 Carrera GTS with PSE this sound is now reminiscence of that. May add some headers later, we’ll see"
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