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- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo S E-Hybrid V8 4.0L 4WD 2017-20
Fits:
Porsche (971) Panamera GTS / Sport Turismo 2019 - 2020
Porsche (971) Panamera Turbo / Sport Turismo 2017 - 2020
Porsche (971) Panamera Turbo S E-Hybrid / Sport Turismo 2017 - 2020
This stunning system is made completely from high-grade titanium. It includes parts cast in the company's in-house foundry, featuring an active X connection and an additional pair of exhaust valves behind the rear mufflers, designed to provide optimal control of the exhaust sound for the best aural enjoyment. The system has been perfectly tuned to deliver the very best sound experience in all modes – enormous effort was invested to give it a sporty, deep higher-frequency V8 sound with an unmistakable Akrapovič character, while keeping it smooth and eliminating any drone for maximum everyday comfort. By using the optional Akrapovič Sound Kit, the driver can choose between a loud racy sound or a quieter note for long-distance driving, regardless of the mode chosen for the vehicle. The look of the Evolution system can also be further enhanced by adding four round titanium or carbon-fibre tailpipes.
An increase in performance and torque through a broad rpm range and a significant weight savings of 40% makes this a very serious performance upgrade. With optimized gas flow and reduced back pressure, it allows limitless tuning options.
Because it is ECE type approved with no need to remap the ECU or add any other parts, it is just a simple plug-and-play installation. The exquisite Akrapovič Evolution Line (Titanium) exhaust system adds performance and style, along with an amazing soundtrack.
With the use of the optional Akrapovič Sound Kit, the ECE type approval is no longer valid.
For vehicles with the base (non sport) Porsche exhaust system, which is then replaced by the Akrapovič Evolution Line system, the Middle Valve Actuator Kit (P-HF1170) is a mandatory upgrade.
Fittment notice: This system does not fit on vehicles equipped with Otto particulate filter (OPF). This product will not fit on Executive models.
*** Mandatory Extra Part Required
Tail pipe set (Titanium) - Product Code: TP-T/S/18
or
Tail pipe set (Carbon) - Product Code: TP-CT/48
Please note: This item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
S-PO
The product you are viewing cross references to these numbers
- Porsche 971.1 Panamera V6 3.0L 2WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 V6 3.0L 4WD (330 Hp) 2017-20
- Porsche 971.1 Panamera 4 3.0L Turbocharged V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4S V6 3.0L 4WD (440 Hp) 2017-20
- Porsche 971.1 Panamera 4S 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid V6 2.9L 4WD 2017-20
- Porsche 971.1 Panamera 4 E-Hybrid 2.9L Twin-Turbo V6 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo S E-Hybrid V8 4.0L 4WD 2017-20
Fits:
Porsche (971) Panamera / 4 / Sport Turismo 2017 - 2020
Porsche (971) Panamera 4 E-Hybrid / Sport Turismo 2017 - 2020
Porsche (971) Panamera 4S / Sport Turismo 2017 - 2020
Porsche (971) Panamera GTS / Sport Turismo 2019 - 2020
Porsche (971) Panamera Turbo / Sport Turismo 2017 - 2020
Porsche (971) Panamera Turbo S E-Hybrid / Sport Turismo 2017 - 2020
The optional Akrapovič Sound Kit enables owners of selected Akrapovič car exhausts to control the sound of the system from the cockpit of their machine. Using Akrapovič technology, drivers can easily switch between the quiet mode and a sportier sound. With the use of a receiver (already included in evolution system) to drive the actuators that open or close the valves at the end of the exhaust system, drivers can use the Sound Remote Controller or the new smartphone app (for iOS and Android) to regulate the valves.
With the use of optional Akrapovič Sound Kit, the ECE homologation is not valid anymore.
Pictures are symbolic.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
P-HF1149
The product you are viewing cross references to these numbers
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20
- Porsche 971.1 Panamera Turbo S E-Hybrid V8 4.0L 4WD 2017-20
Fits:
Porsche (971) Panamera GTS / Sport Turismo 2019 - 2020
Porsche (971) Panamera Turbo / Sport Turismo 2017 - 2020
Porsche (971) Panamera Turbo S E-Hybrid / Sport Turismo 2017 - 2020
For vehicles with the base Porsche exhaust system, which is then replaced by the Akrapovič Evolution Line system, the Middle Valve Actuator Kit (P-HF1170) is a mandatory upgrade.
If the Evolution Line system replaces the Porsche sports exhaust system, the Middle Valve Actuator Kit (P-HF1170) is not required.
Please note: This item is not a stock product. It is a special order part and once ordered with us is not subject to cancellation or return unless proven not fit for purpose or defected.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
P-HF1170
The product you are viewing cross references to these numbers
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD (550 Hp) 2017-20
- Porsche 971.1 Panamera Turbo V8 4.0L 4WD Executive 2017-20
- Porsche 971.1 Panamera Turbo 4.0L Twin-Turbo V8 Sport Turismo 2017-20

Fits:
Porsche 971 Panamera turbo and turbo S - 2016 onwards
The component is perfectly interchangeable with the original components, following the instructions in the constructor's workshop manual
RACETRACK USE ONLY
These components are designed and developed for racetrack use and to maximise the car's performance. They are not street legal and must be installed by professionals in the sector
EXHAUST VALVE - ELECTRIC
The exhaust system is complete with electric valve. The electric actuator is not included and the standard actuator already installed on the car must be used. Control of the original valve is still provided
SOUND - TUBI SOUND
Tubi Sound is the standard sound of Tubi Style exhausts, louder and more powerful than the original sound. This sound represents our brand
END TIPS DESIGN - OE
The muffler must be used in conjunction with the original exhaust end tips
END TIPS NUMBER AND POSITION - 2 + 2 AT THE SIDES
The tailpipes are located low down at the sides of the car. There are two tailpipes at each side
MATERIAL
AISI 304 STAINLESS STEEL
A choice stainless steel ideal for aggressive environments where combustion emissions can cause serious chemical corrosion on other types of metal
MAIN PIPE DIMENSION - 70
This is the diameter of the main pipe of the exhaust system
Porsche Switchable Silencers & Mufflers - Dual-Mode Performance Exhaust Systems
Switchable Silencers / Mufflers offer Porsche owners the best of both worlds—refined, road-friendly exhaust sound when cruising, and an aggressive, performance-focused tone at the touch of a button. Using valve-controlled technology, these exhaust systems allow drivers to switch between quiet and sport modes, delivering enhanced sound, performance, and driving engagement on demand.
Available from Design911, Porsche switchable silencers include both genuine Porsche-engineered systems and high-quality aftermarket performance options, all designed to integrate seamlessly with your vehicle’s existing exhaust components and control systems.
What Do Switchable Silencers / Mufflers Do?
Switchable silencers use internal exhaust valves to control sound level and exhaust flow.
Core Functions:
- Allow selectable quiet and sport exhaust modes.
- Improve exhaust gas flow under performance driving.
- Enhance throttle response and engine efficiency.
- Maintain refined sound levels for everyday driving.
- Deliver a more engaging driving experience on demand.
These systems adapt your Porsche’s character to suit any driving situation.
Why Do Standard Exhaust Silencers Fail or Fall Short?
Factory exhaust systems are designed to meet noise
regulations and long-term durability requirements, which can limit performance
and sound. Common issues include:
- Internal corrosion from heat and condensation.
- Restrictive baffling reducing exhaust flow.
- Fixed sound levels with no adaptability.
- Valve or actuator wear in older switchable systems.
- Limited performance compatibility with tuned engines.
Over time, standard silencers may lose efficiency, sound quality, or reliability.
Why Upgrade to Switchable Silencers / Mufflers?
Upgrading to a switchable exhaust system enhances both performance and versatility.
Upgrade Benefits:
- Dual-mode exhaust sound at the press of a button.
- Improved exhaust flow for better performance.
- Sportier, more engaging exhaust note when desired.
- Maintains comfort and compliance in quiet mode.
- Ideal for road, touring, and spirited driving.
Whether OEM or aftermarket, switchable silencers offer flexibility without compromise.
Highlights
- Porsche switchable silencer and muffler upgrades
- Valve-controlled exhaust sound adjustment
- OEM Porsche and premium aftermarket options
- Improved performance, sound, and driving engagement
- Compatible with factory systems and controls