Porsche 718 Cayman GT4 / GTS / Spyder 4.0L Valved Sport Exhaust System

Unleash the True 8,000 RPM Flat-Six Scream — CEES Porsche 718 4.0L Valved Sport Exhaust System

Reclaim the raw, race-bred soundtrack of your naturally aspirated Porsche with the CEES Valved Sport Exhaust System, precision-engineered for the Porsche 718 Cayman GT4, GTS 4.0, Boxster GTS 4.0, and 718 Spyder (4.0L NA Flat-6). Designed to overcome the muted factory sound profile caused by restrictive silencer baffling, this system merges acoustic crossover engineering with high-performance valvetronic control—delivering an intoxicating, high-frequency GT3-inspired crescendo all the way to the 8,000 RPM redline while maintaining refined, drone-free touring comfort when cruising.

🚀 Engineering Highlights

• Dual-Mode Valvetronic Acoustic Control: High-temperature vacuum valves allow seamless switching between stealth cruising mode (valves closed) and unrestrained, high-decibel Flat-6 motorsport scream (valves open), fully compatible with OEM PSE controls or included wireless remotes.
• Acoustically Tuned Crossover Geometry: Precision internal flow path merges exhaust pulses from opposing cylinder banks, eliminating the muddy resonance and cabin drone common in stock setups while amplifying the high-pitched harmonic wail at high RPM.
• Rear Axle Weight Reduction: Available in ultra-lightweight Grade 5 Titanium (shedding up to 45% of weight directly off the rear overhang) or heavy-duty, heat-resistant T304 Stainless Steel for proven long-term durability.
• 3D Scan Precision Fitment: Engineered from high-definition 3D laser chassis scans to guarantee 100% direct bolt-on alignment with factory over-axle pipes (OAP), OEM hangers, and factory rear diffuser tips.

📊 Technical Specifications

✨ Bespoke Your Build — Chat with Our Specialists on WhatsApp

• WhatsApp: +86 15626172519
• Email: cees-exhaust@qq.com

📦 Production & Shipping

• 🛠️ Production Time: Built to order in 2–4 weeks (in-stock options ship in 6–12 business days)
• 🚚 Shipping: Premium express via DHL / FedEx / UPS — estimated 7–15 business days to your door
• 📦 Free shipping

FAQ

1. How does this exhaust improve the sound of the Porsche 718 4.0L?

The factory 718 4.0L exhaust is restricted by particulate filters and heavily muffled rear silencer chambers that silence the flat-six engine. The CEES Valved Sport Exhaust replaces the heavy rear muffler box with tuned acoustic channels and a crossover merging section. With valves open, it uninhibitedly projects the high-RPM GT3-like scream that Porsche enthusiasts crave.

2. Can I control the valves with the factory Porsche Sport Exhaust (PSE) button?

Yes. The vacuum valves connect directly to the factory vacuum lines, allowing full control through the OEM PSE exhaust button on your center console, or via the optional standalone controller kit.

3. What is the difference between SUS304 Stainless Steel and Grade 5 Titanium?

SUS304 Stainless Steel offers bulletproof durability, excellent corrosion resistance, and a rich, deep acoustic tone. Grade 5 Titanium reduces weight by approximately 45% off the very rear of the car—improving vehicle handling dynamics—and produces an exotic, crisper metallic acoustic resonance under hard acceleration.

4. Is any cutting or welding required?

No. 100% bolt-on installation allows a return to stock at any time. The system mounts directly to factory hangers and connects to the factory over-axle pipes (OAP).

5. Are you a direct manufacturer?

Yes — CEES Exhaust is a direct manufacturer based in Guangdong, China. We build our exhaust systems in-house with strict quality control, providing enthusiasts with race-proven engineering at factory-direct pricing.