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$4,000.00 USD

The Porsche GT4 platform is the pinnacle of the Cayman 718. Sporting the same engine as the GT3, this car's OEM exhaust is rather tamed from factory. The Valve Master system is the ultimate upgrade for this platform. Featuring a full valved system for instant control, sport catted or catless downpipes for power gains, and lightweight titanium or grade 5 stainless steel. This is the perfect upgrade for this platform. 


  • Full Cat-back System
  • Center Merge X-Pipe for flow equalization 
  • 2.5" long tube piping creates high pitched F1 tone with crisp shifts
  • 2 Tips
  • Remote and Receiver
  • All Hardware and Clamps
  • Max Power Gains without upgraded headers +20HP +14TQ
  • Max Power Gains with upgraded headers +38HP +30TQ
  • Weight Savings:
    • Stainless Steel T304 - 10LBS lighter than OEM
    • Titanium - 25LBS lighter than OEM
  • Sport Catted Headers include 200CPSI catalytic convertor 
  • Valves closed offers a comfortable, no drone and tamed experience
  • Valves open turns heads and offers an F1 experience like no other


  • 2022+ Porsche 718 Cayman GT4 / GT4RS

Our usual times to have the full exhaust system made is about 7-18 business days, delays may occur but we try to have your exhaust built and QA tested as soon as possible.  Shipping times can vary by country but for most countries, the shipping time is 7-10 business days. The customer will have to pay a small duty and tax fee where the customer will be contacted via email, phone or SMS message. Once orders are placed, they will be marked as fulfilled once the exhaust has been shipped, and will be updated with the tracking number. Please allow up to 18 business days to look for a tracking number on your order.

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