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ceesexhaust

Porsche 911 991 / 991.1 / 991.2 GT3 4.0L Valved Sport Exhaust System

Porsche 911 991 / 991.1 / 991.2 GT3 4.0L Valved Sport Exhaust System

$1,600.00
$0.00 $1,600.00
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CONFIGURATION

Our engineers will verify the fitment of your CEES exhaust system against your VIN before shipping — guaranteed 100% compatibility.

Unleash the full potential of your Porsche 911 GT3 with the Cees-Exhaust Valved Sport Exhaust System. Precision-engineered for the 991 platform, this system transforms the 4.0L flat-six into a high-performance masterpiece.

Key Technical Features:

     

    • Dual-Mode Valvetrain: Switch between a refined, civil tone for street driving and an unrestricted, raw race scream at the touch of a button.
    • Premium Material Options: Available in corrosion-resistant T304 Stainless Steel or aerospace-grade Grade 5 Titanium for maximum weight savings.
    • Optimized Flow Dynamics: Designed specifically for the 4.0L engine to reduce backpressure and improve thermal management.
    • Bolt-On Fitment: Engineered for a perfect fit on 991.1 and 991.2 GT3 models, utilizing factory mounting points.
    • Precision Craftsmanship: Expertly TIG-welded for long-lasting structural integrity under extreme heat and vibration.

    Performance & Engineering

    • Material: T304 Stainless steel: 26.0 lbs lighter than stock

                                  Grade 5 Titanium: 55.8 lbs lighter than stock

    • Precision TIG Welding: Expertly welded to endure sustained high exhaust temperatures and increased boost levels.
    • Refined Acoustics: Designed to deliver a deeper, more aggressive tone without the intrusive "drone"
    • 100% reversible—return to stock at any time.

    Sound & Control

    • Dual-Mode Valvetronic Technology:
      • Valves Closed: Maintains a refined, OEM-plus tone—perfect for early morning starts or long highway cruises (Zero Drone).
      • Valves Open: Unlocks a raw, high-decibel V8 roar with aggressive pops and burbles on downshift

      Technical Specifications

      • Fitment: 2013-2019 Porsche 911 991 / 991.1 / 991.2 GT3
      • Engine: 4.0L
      • Installation: Direct bolt-on to factory components; professional installation is highly recommended.
      • Warranty: 1-Year Limited Warranty against material and workmanship defects.

      Why Choose CEES Exhaust?

      We are a factory-direct manufacturer, offering a bridge between high-end performance and OEM/ODM customization.
      • Shipping method: DHL, FedEx, and UPS air freight for fast delivery.
        • In-Stock Items: 6–12 days.
        • Built-to-Order: 2–3 week production lead time.
      • Expert Support: Every purchase includes a 1-year warranty and access to our dedicated technical

      Customization Options

      Make your exhaust as unique as your build. We offer full customization
      • Custom Logo Engraving: Laser-etched branding (vector file required).
      • Tailpipe Finishes: Choose from Carbon Fiber, Stainless Steel, or specialized TIP finishes.
      • Design Variations: Available with or without valves, large diameters, bevel molding, and custom shapes.
      • Valvetronic Control: Equipped with electronically or vacuum-controlled valves that allow you to switch between a refined, quiet mode for daily commuting and an aggressive "straight-pipe" mode at the touch of a button.
      Please contact us as bellowing：
      📧 Email: aecexhaust@gmail.com
      💬 WhatsApp: +86 15626172519
      ☎️Telephone：+86 15626172519
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