Akrapovic 16-17 Porsche 911 Turbo/Turbo S (991.2) Slip-On Line (Titanium) (Req. Tips/Diffuser)

The Akrapovic S-PO/TI/6H Slip-On Line in titanium is the definitive muffler upgrade for the 2016-2017 Porsche 911 Turbo and Turbo S on the 991.2 platform. Engineered to complement the twin-turbocharged 3.8-liter flat-six’s immense power output with a weight-optimized titanium exhaust assembly, the S-PO/TI/6H transforms the Turbo’s exhaust character with a deeper, more visceral Akrapovic sound signature while delivering meaningful rear-end weight reduction. Compatible with both the Turbo and Turbo S variants and requiring the appropriate Akrapovic tip set purchased separately, this system is the first upgrade step for 991.2 Turbo owners demanding a track-refined exhaust experience on the street.

Fitment

Specifications

What’s Included

• Akrapovic S-PO/TI/6H titanium Slip-On Line 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

Which 991.2 Porsche 911 Turbo variants does the S-PO/TI/6H fit?

The S-PO/TI/6H fits the 2016 and 2017 Porsche 911 Turbo and Turbo S on the 991.2 platform. It is not compatible with the 991.1 Turbo/Turbo S or with any 992-generation Turbo variants. The system is specific to the 991.2 Turbo’s exhaust architecture introduced with the 2016 model year refresh.

Why are tips not included with the S-PO/TI/6H?

Akrapovic offers the S-PO/TI/6H without tips so owners can select their preferred tip style independently. Titanium oval tips and carbon fiber tips are available separately as Akrapovic accessory items, giving 991.2 Turbo owners the flexibility to match the tip finish to their vehicle’s color and trim preferences.

Does the S-PO/TI/6H work with the 991.2 Turbo S’s sport exhaust valve system?

Yes. The S-PO/TI/6H is engineered to interface with the factory active exhaust valve system on the 991.2 Turbo and Turbo S. The electronic valve and the Comfort, Sport, and Sport Plus mode sound behaviors continue to function after installation, with the titanium construction enhancing the character of each mode.

Is the S-PO/TI/6H ECE approved for road use?

The Akrapovic S-PO/TI/6H carries ECE type approval, confirming it meets European emissions and homologation standards for road use in ECE member states. US buyers should confirm that the system’s emissions compliance meets local state regulations, as ECE approval does not automatically confer CARB certification.

How does the S-PO/TI/6H sound compare to the stock 991.2 Turbo exhaust?

The S-PO/TI/6H produces a noticeably more pronounced, deeper exhaust note compared to the factory 991.2 Turbo system. The twin-turbocharged flat-six’s characteristic sound is amplified with cleaner, sharper harmonic resonance that becomes particularly evident under Sport and Sport Plus mode operation. The upgrade delivers a meaningful acoustic improvement without making the car antisocial at normal speeds.

Will the S-PO/TI/6H fit the 991.2 Turbo Cabriolet?

The S-PO/TI/6H is specified for the 991.2 Turbo and Turbo S coupe. Cabriolet fitment compatibility for this specific system should be verified with Akrapovic or by contacting our team before ordering, as some 991.2 Turbo Cabriolet exhaust configurations may differ from the coupe.

How much weight does the S-PO/TI/6H save over the factory 991.2 Turbo exhaust?

Akrapovic’s titanium construction for the 991.2 Turbo platform delivers significant weight reduction compared to the factory stainless steel muffler assembly. The published weight saving specification for the S-PO/TI/6H is available in Akrapovic’s official technical documentation. Reducing unsprung rear mass on the 991.2 Turbo contributes to improved handling and rear-axle response.

Is the S-PO/TI/6H street legal in all US states?

The S-PO/TI/6H retains the factory catalytic converter hardware and is not a decat system. It is street legal in most US states. It does not carry a CARB Executive Order number, so buyers in California and other CARB-regulated states should confirm local compliance requirements before purchase.

Installation Overview

1. Allow the factory exhaust to cool completely before beginning any work on the 911 Turbo.
2. Raise and securely support the Porsche 911 on a lift or rated jack stands with wheels chocked.
3. Apply penetrating lubricant to all OEM muffler mounting hardware and rubber hangers and allow a 15-minute soak.
4. Disconnect the factory muffler at the link pipe junction clamp or flange.
5. Release all rubber hangers and carefully lower the OEM muffler assembly.
6. Position the S-PO/TI/6H assembly and connect at the link pipe junction, hand-tightening only at this stage.
7. Attach all rubber hangers to their mounting pegs and verify the system clears all chassis and body components.
8. Install your chosen Akrapovic tip set per the tip installation sheet.
9. Torque all fasteners to specification in the Akrapovic installation documentation.
10. Start the vehicle and check all joints for exhaust leaks. Re-torque after the first full heat cycle.