Akrapovic 2020+ Porsche Cayman GT4 (718) Slip-On Race Line (Titanium) (Req Tips / Option 2)

The Akrapovic S-PO/TI/18/1 Slip-On Race Line in titanium transforms the 2020 and later Porsche 718 Cayman GT4 and 718 Spyder into a track-focused machine with an exhaust soundtrack that matches the 4.0L naturally aspirated flat-six’s high-revving character. Designed as a Race Line system for maximum performance sound, the S-PO/TI/18/1 is OPF/GPF compatible and delivers a dramatic weight reduction versus the factory muffler. Tips are required separately. This is Option 2 in Akrapovic’s exhaust lineup for the 982 GT4 and Spyder platforms.

Fitment

Specifications

What’s Included

• Akrapovic S-PO/TI/18/1 Race Line titanium slip-on muffler assembly
• All required mounting hardware and clamps
• Akrapovic installation instructions
• Note: exhaust tips are NOT included and must be purchased separately

Frequently Asked Questions

What is the difference between the Akrapovic Slip-On Race Line and the Slip-On Line for the 718 GT4?

The Race Line designation indicates a more aggressive exhaust character tuned for maximum sound and performance, typically used in track environments. The standard Slip-On Line is tuned for a balance of performance sound and road usability. The S-PO/TI/18/1 is the Race Line option and will be louder and more aggressive than the standard slip-on offering.

What does “Option 2” mean for the 718 GT4 and Spyder exhaust?

Akrapovic offers multiple exhaust system configurations for the 718 GT4 and Spyder platform. Option 2 refers to this specific muffler section design within their Race Line range, distinguishing it from other tip configurations or system routing options that Akrapovic produces for the same platform.

Is the S-PO/TI/18/1 compatible with the OPF/GPF versions of the 718 GT4?

Yes. The Akrapovic S-PO/TI/18/1 is specifically designed to be compatible with Porsche 718 Cayman GT4 and 718 Spyder models equipped with the Otto Particle Filter (OPF/GPF). Both OPF and non-OPF versions are supported.

Why are tips sold separately for the S-PO/TI/18/1?

Akrapovic offers multiple titanium and carbon fiber tip options for the 718 GT4 and Spyder platform, allowing buyers to choose the tip style that best matches their aesthetic and performance preferences. The correct Akrapovic tip SKU should be selected at the time of purchase to complete the installation.

What exhaust note does the S-PO/TI/18/1 produce on the 718 GT4?

The Akrapovic S-PO/TI/18/1 Race Line system is tuned to amplify the naturally aspirated 4.0L flat-six’s high-revving character, producing a louder, sharper exhaust note with a distinctly mechanical quality as engine speed climbs toward the 8,000 rpm redline. The titanium construction adds a characteristic higher-frequency overtone that is immediately recognizable as an Akrapovic system.

Does the S-PO/TI/18/1 affect the Porsche Sport Exhaust button functionality?

The S-PO/TI/18/1 replaces the muffler section of the exhaust. Functionality of the factory Sport Exhaust valve system depends on whether the OEM valve actuator remains in the system. Consult the Akrapovic installation instructions for details on valve integration for your specific vehicle configuration.

Will the S-PO/TI/18/1 affect the Porsche factory warranty on the 718 GT4?

Installing aftermarket exhaust components may affect Porsche warranty coverage for related powertrain systems. Dealer interpretation varies. We strongly recommend consulting your Porsche Center before installation, particularly if the vehicle has remaining factory warranty coverage.

Is the S-PO/TI/18/1 legal for use on public roads?

Race Line designation systems are primarily designed for track use and may exceed noise regulations in some jurisdictions for street use. The S-PO/TI/18/1 also carries a Non-CARB designation for California and CARB states. Buyers should verify compliance with local noise and emissions regulations before using this system on public roads.

How much weight does the S-PO/TI/18/1 save compared to the factory muffler?

Akrapovic’s Grade-1 titanium construction produces significantly lighter exhaust components than the factory stainless steel system on the 718 GT4 and Spyder. While Akrapovic does not publish the exact weight delta for this specific system, titanium slip-on systems on the 718 platform typically reduce muffler weight by 30 to 50 percent versus OEM.

Installation Overview

1. Allow the factory exhaust to cool completely before starting work.
2. Raise and securely support the vehicle on a lift or quality jack stands with the wheels chocked.
3. Apply penetrating lubricant to all OEM muffler fasteners, flanges, and rubber hangers and allow 15 minutes of soak time.
4. Disconnect the factory muffler at the connection point with the mid-pipe or link pipe section.
5. Release all rubber exhaust hangers and carefully lower the OEM muffler assembly from the vehicle.
6. Clean the flange mating surface and install the supplied gasket.
7. Position the Akrapovic S-PO/TI/18/1 slip-on muffler and connect it to the mid-pipe connection, hand-tightening only at this stage.
8. Attach all rubber hangers to their mounting pegs and verify the system hangs without contact with any chassis, heat shield, or body components.
9. Install the separately purchased Akrapovic titanium tip assemblies per their instructions before applying final torque.
10. Torque all connection hardware to the specification in the Akrapovic installation sheet.
11. Start the engine and check all joints for exhaust leaks. Re-torque after the first heat cycle once the system has cooled.