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Rear Spoilers / Aerofoil

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DISPLAYING 1 to 16 (of 37 products)
1 2 3
P991.20.7000
Product Information
Product Information
Downforce aero kit
With TÜV parts certificate (§19.3).

moshammer

Fits:
Porsche 997.1 Turbo models

The 991.1 Turbo Downforce RS Aero Kit ensures the best possible aerodynamic properties and is at the same time a beautiful oem+ design element that gives your Porsche a unique appearance.

It consists of:

1 x Front spoiler evo2 | P991.20.1022
1 x Side skirts | P991.22.2020
1 x Rear spoiler extension | P991.20.3020
1 x Ram Air Scoops | P991.20.2025
1 x Rear diffuser | P991.20.3040

This Downforce aero kit is delivered primed & paint ready. Mounting material is included.

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Related, superseded, cross reference or alternative numbers for comparison.

P991.20.7000
P991.20.7000
P991.20.1022
P991.22.2020
P991.20.3020
P991.20.2025
P991.20.3040

The product you are viewing cross references to these numbers
P991.42.7002
Product Information
Product Information
Touring EVO aero kit (C2 Narrow body)
With TÜV parts certificate (§19.3).

moshammer

Fits:
Porsche 991.2 Carrera models with standard bumpers, PSE and narrow body

The 991.2 touring evo Aero Kit ensures the best possible aerodynamic properties and is at the same time a beautiful oem+ design element that gives your Porsche a unique appearance.

The kit consists of:

1x Front spoiler evo | P991.42.1020
1x Ducktail evo | P991.42.3022
1x Diffuser | P991.42.3040

This Touring EVO aero kit is delivered primed & paint ready. Mounting material is included.

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Related, superseded, cross reference or alternative numbers for comparison.

P991.42.7002
P991.42.7002
P991.42.1020
P991.42.3022
P991.42.3040

The product you are viewing cross references to these numbers
P991.42.7000
Product Information
Product Information
Touring EVO aero kit (C4 wide body)
With TÜV parts certificate (§19.3).

moshammer

Fits:
Porsche 991.2 Carrera 4 models with standard bumpers, PSE and wide body!

The 991.2 touring evo Aero Kit ensures the best possible aerodynamic properties and is at the same time a beautiful oem+ design element that gives your Porsche a unique appearance.

The kit consists of:

1x Front spoiler evo | P991.42.1020
1x Side skirts | P991.40.2020
1x Ducktail evo | P991.42.3022
1x Diffuser | P991.42.3040

This Touring EVO aero kit is delivered primed & paint ready. Mounting material is included.

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.

P991.42.7000
P991.42.7000
P991.42.1020
P991.40.2020
P991.42.3022
P991.42.3040

The product you are viewing cross references to these numbers
P991.42.8000
Product Information
Product Information
Touring EVO aero kit (C4 wide body)
With TÜV parts certificate (§19.3).

moshammer

Fits:
Porsche 991.2 Carrera GTS models with standard bumpers, PSE and wide body!

The 991.2 touring evo gts Aero Kit ensures the best possible aerodynamic properties and is at the same time a beautiful oem+ design element that gives your Porsche a unique appearance.

The kit consists of:

1x Front spoiler evo (GTS)| P991.42.1022
1x Side skirts | P991.40.2020
1x Ducktail evo | P991.42.3022
1x Diffuser | P991.42.3040

This Touring EVO aero kit is delivered primed & paint ready. Mounting material is included.

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.

P991.42.8000
P991.42.8000
P991.42.1020
P991.40.2020
P991.42.3022
P991.42.3040

The product you are viewing cross references to these numbers
Special Order item
9910448037
Product Information
Product Information
SportDesign package. Includes new front apron with new front spoiler and new extendible rear spoiler in a unique design. Please note: Significantly reduced approach/departure angle

porsche

Fits:
Porsche 991.2 C2 / C2S 2017>>
Porsche 991.2 C4 / C4S 2017>>
Porsche 991.2 Targa / Targa S 2017>>
Porsche 991.2 Carrera T 2017>>

Options:
- For vehicles without headlight cleaning system and without front or rear ParkAssist
- For vehicles with headlight cleaning system and without front or rear ParkAssist
- For vehicles without headlight cleaning system and with front and rear ParkAssist
- For vehicles with headlight cleaning system and with front and rear ParkAssist

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9910448037
99104480370
99104480371
99104480372
99104480373

The product you are viewing cross references to these numbers
Special Order item
99151256
Product Information
Product Information
Rear spoiler end cap with inscription 4.0. Primed.
porsche

Fits:
Porsche 991 GT3 2018>>

Click 'Zoom in' for large parts diagram.
Diagram ref no 3

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99151256
99151256584G2X
99151256684G2X

The product you are viewing cross references to these numbers
Special Order item
99104480308
Product Information
Product Information
Original Porsche Aerokit 911 Turbo add-on package

porsche

For vehicles with painted side skirts and/or painted rear apron. Add-on kit includes new front spoiler with side fins, new fixed rear spoiler with new automatically extending rear wing, can be painted in exterior colour.

Fits:
Porsche 911 (991.2) Turbo / Turbo S 2017>>

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99104480308
99104480308

The product you are viewing cross references to these numbers
SA010-AL
Product Information
Product Information
Billet aluminium rear wing risers.
Black Brushed Aluminium with 2" Height Increase

salteraero

Fits
Porsche 991.1 GT3 RS 2015-2017
Porsche 991.2 GT3 RS 2018-2019

Curves that pay homage to the original shape while giving a striking new look that complements the GT3 RS body.

2 inches taller than the OEM 991.1 GT3 RS riser to provide a more confident turn in on high speed corners and provide a clear unobstructed rear view.

Precision machined from a solid block of 6061 aluminium billet. Smooth brushed black finish

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

SA010-AL
99151268190
99151268290
99151268191
99151268291
99151268171
99151268271

The product you are viewing cross references to these numbers
Special Order item
99907370901
Product Information
Product Information
Bolt with washer M5 x 16 rear wing end plate. 
Sold each - 4 required per car

porsche

Fits:

Porsche 991 GT3 RS - 2014 to 2021

Click 'Zoom in' for large parts diagram.
Diagram ref no 39




Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99907370901
99907370901

The product you are viewing cross references to these numbers
SA001
Product Information
Product Information
Carbon fibre rear wing end plates.

salteraero

Fits
Porsche 991.2 GT3 2017-2019

Salter Aero Carbon Fibre Wing End Plates for Porsche 991.2 GT3.

Replace your stock black wing plates with high gloss carbon fibre

Made using pre-preg aerospace quality carbon fibre

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

SA001
99151246382
99151246482

The product you are viewing cross references to these numbers
P991.40.3020
Product Information
Product Information
Decklid spoiler
With TÜV parts certificate (§19.3), Also recognized in Switzerland

moshammer

Fits:
Porsche 991 Carrera | S | 4 | 4S | GTS |Targa | Cabriolet | all models C2 & C4

The 991 decklid spoiler ensures the best possible aerodynamic properties and is at the same time a beautiful oem+ design element that gives your Porsche a unique appearance. A spoiler, which don't change your original hardware. The softer version of the ducktail spoiler, but with an aggressive raised extension area.
The Porsche active aerodynamic Rear spoiler functional capability stays and is not impaired.

This decklid spoiler are delivered primed & paint ready. Mounting material is included.

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.

P991.40.3020
P991.40.3020

The product you are viewing cross references to these numbers
P991.42.3022
Product Information
Product Information
Ducktail EVO spoiler.
With TÜV parts certificate (§19.3), Also recognized in Switzerland

moshammer

Fits:
Porsche 991.2 Carrera S | 4 | 4S | GTS | Targa | Cabriolet

The 991.2 ducktail ensures the best possible aerodynamic properties and is at the same time a beautiful oem+ design element that gives your Porsche a unique appearance. The Porsche active aerodynamic Rear spoiler functional capability stays and is not impaired.

This duck tail spoiler is delivered primed & paint ready. Mounting material is included.

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.

P991.42.3022
P991.42.3022

The product you are viewing cross references to these numbers
Special Order item
991044805
Product Information
Product Information
Manthey Performance Aerokit. 

porsche

Fits:
Porsche 991.2 GT2 RS - 2017 Onwards

The Manthey Kit for the 991.2 GT2 RS was developed in close collaboration between the Porsche Development Centre in Weissach and Manthey-Racing GmbH. Thanks to coordinated suspension, aerodynamics and braking components and the lightweight GT2 RS magnesium wheels, the breathtaking performance of the 991 GT2 RS has been tuned even more precisely to the demands of trackdays and tourist drives.

Porsche set a new course record at the Nürburgring in the sports car category in June 2021 with a 911 GT2 RS equipped with a Manthey Kit: The road-approved speedster completed a lap [sic] of the 20.8 km Nordschleife in just 6:43.300 minutes.

Aerodynamics package

Porsche and Manthey combined their respective technologies and know-how in the development of the aerodynamics package. In addition, individual components were developed with an eye to the defined performance targets. For instance, downforce at the front has been increased from 49 kg to 70 kg at a speed of 200 km/h through the use of a carbon underbody, additional air baffle elements in the area of the front wheels and flics on the front apron. The downforce at the rear end is increased from 93 kg to 200 kg at 200 km/h thanks to the rear wing in combination with the rear diffuser and aerodiscs, all of which are manufactured in carbon, further enhancing driving stability. The aerodiscs on the rear wheels reduce turbulence at the rear and have a positive effect on aerodynamic efficiency. 

To accommodate the higher aero load caused by the rear wing, the rigidity at the rear end has been massively increased. The rear wing itself is attached directly to the body by means of special supports (standard: wing attached to the rear lid). The aerodynamics package achieves a shift in the aero balance and a 70% increase in overall downforce.

Among other things, the aerodynamics package was tested in the wind tunnel in Weissach, which remains one of the most modern of its kind: the blower with a diameter of eight metres has extremely lightweight carbon blades and can generate wind speeds of up to 300 km/h on the tested vehicle in the measurement area.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

991044805
99151226570A3G

The product you are viewing cross references to these numbers
Special Order item
991044805
Product Information
Product Information
Manthey Performance Aerokit for cars with 20/21 inch GT2 RS magnesium wheel set

porsche

Fits:
Porsche 991.2 GT3 RS - 2017 Onwards
Only for cars with 20/21 inch GT2 RS magnesium wheel set

The Manthey Kit for the 991.2 GT3 RS was developed in close collaboration between the Porsche Development Centre in Weissach and Manthey-Racing GmbH. Thanks to coordinated suspension, aerodynamic and brake components, the breathtaking performance of the 911 GT3 RS has been tuned even more precisely to the demands of trackdays and tourist drives.

Put it another way: 6:54.340 minutes for the 20.8-kilometre Nürburgring-Nordschleife. In this impressive time, Porsche works driver Kévin Estre lapped the "Green Hell" in a GT3 RS with an identical kit in April 2021.

Aerodynamics package

The downforce of the vehicle is increased by installing various components, including additional air baffle elements in the area of the front wheels, flaps on the front apron and a new rear wing of carbon. Aerodiscs on the rear wheels, also made of carbon, reduce turbulence in the rear of the vehicle and further increase aerodynamic efficiency. To accommodate the higher aero load caused by the rear wing, the rigidity at the rear end has been massively increased. The rear wing itself is connected directly to the body with the help of special supports (in the GT3 RS without Manthey Kit, the wing is attached to the rear lid). Among other things, the aerodynamics package was tested in the wind tunnel in Weissach, which remains one of the most modern of its kind: The blower with a diameter of eight metres has extremely lightweight carbon blades and can generate wind speeds of up to 300 km/h (186 mph) on the tested vehicle in the measurement area.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

991044805
99151226598G2X
99151226599A3G

The product you are viewing cross references to these numbers
Special Order item
991044805
Product Information
Product Information
Manthey Performance Aerokit for cars with 20/21 inch GT3 RS Wheel Set

porsche

Fits:
Porsche 991.2 GT3 RS - 2017 Onwards
Only for cars with 20/21 inch GT3 RS Wheel Set

The Manthey Kit for the 991.2 GT3 RS was developed in close collaboration between the Porsche Development Centre in Weissach and Manthey-Racing GmbH. Thanks to coordinated suspension, aerodynamic and brake components, the breathtaking performance of the 911 GT3 RS has been tuned even more precisely to the demands of trackdays and tourist drives.

Put it another way: 6:54.340 minutes for the 20.8-kilometre Nürburgring-Nordschleife. In this impressive time, Porsche works driver Kévin Estre lapped the "Green Hell" in a GT3 RS with an identical kit in April 2021.

Aerodynamics package

The downforce of the vehicle is increased by installing various components, including additional air baffle elements in the area of the front wheels, flaps on the front apron and a new rear wing of carbon. Aerodiscs on the rear wheels, also made of carbon, reduce turbulence in the rear of the vehicle and further increase aerodynamic efficiency. To accommodate the higher aero load caused by the rear wing, the rigidity at the rear end has been massively increased. The rear wing itself is connected directly to the body with the help of special supports (in the GT3 RS without Manthey Kit, the wing is attached to the rear lid). Among other things, the aerodynamics package was tested in the wind tunnel in Weissach, which remains one of the most modern of its kind: The blower with a diameter of eight metres has extremely lightweight carbon blades and can generate wind speeds of up to 300 km/h (186 mph) on the tested vehicle in the measurement area.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

991044805
99151226598G2X
99151226599A3G

The product you are viewing cross references to these numbers
POV2060
Product Information
Product Information
Rear deck lid spoiler in high gloss carbon fibre. 

vorsteiner

Fits:

Porsche 991.2 911 GT2 RS

The rear decklid (engine lid) spoiler is designed to increase downforce to the rear end, creating increased stability and handling.  

Made of pre-preg autoclave carbon fiber construction with a high glossy finish.

DISPLAYING 1 to 16 (of 37 products)
1 2 3
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About Rear Spoilers / Aerofoil

Porsche Rear Spoilers & Aerofoils | Performance, Stability & Design Enhancement

Rear spoilers and aerofoils are key aerodynamic components designed to increase downforce, improve stability, and enhance the distinctive styling of your Porsche. Whether you’re replacing a damaged spoiler, upgrading to a lightweight performance aerofoil, or transforming your vehicle’s exterior for a sportier stance, these parts combine aerodynamic precision with visual appeal.

At Design911, we supply a comprehensive range of high-quality rear spoilers and aerofoils, crafted from advanced materials such as carbon fibre, fiberglass, and composite alloys for maximum strength and minimal weight. Designed for precision fitment, these components deliver improved handling, reduced lift, and a more aggressive aesthetic that reflects Porsche’s racing heritage.

Suitable for classic 911s through to modern 992, Cayman, and Boxster models, our rear spoilers ensure a perfect balance of performance, design, and durability for every application — from restoration to motorsport preparation.

What Do Rear Spoilers and Aerofoils Do?

A rear spoiler or aerofoil manages airflow over your Porsche’s body to enhance stability, grip, and aerodynamic efficiency. By reducing lift and increasing rear downforce, it ensures consistent traction and improved high-speed performance.

Core Functions:

  • Increases rear downforce for enhanced stability and control.
  • Reduces aerodynamic lift and drag at high speeds.
  • Improves traction during cornering and acceleration.
  • Directs airflow for better cooling efficiency.
  • Adds a distinctive motorsport-inspired aesthetic.

A well-engineered spoiler doesn’t just look stunning — it directly contributes to safer, more predictable handling and optimal balance under load.

Why Do Rear Spoilers and Aerofoils Fail or Deteriorate?

Rear spoilers are exposed to aerodynamic pressure, vibration, and environmental conditions, which can lead to wear and damage over time.

Common Causes of Failure Include:

  • UV degradation leading to fading or cracking of materials.
  • Impact damage from debris or rear-end collisions.
  • Corrosion or fatigue in metal mounting brackets.
  • Loose fittings causing vibration or misalignment.
  • Paint wear or delamination on carbon fibre surfaces.

If neglected, a damaged or unstable spoiler can cause aerodynamic imbalance, increased drag, and even safety concerns at higher speeds — making timely replacement or upgrade essential.

Why Replace Your Rear Spoiler or Aerofoil?

Replacing a worn or damaged rear spoiler ensures aerodynamic integrity and restores your Porsche’s original performance and appearance. Upgrading to a modern or motorsport-style aerofoil can further enhance downforce, aesthetics, and handling precision.

Key Benefits:

  • Restores aerodynamic balance and rear stability.
  • Improves cornering grip and high-speed control.
  • Enhances vehicle appearance with performance styling.
  • Lightweight materials for improved performance efficiency.
  • Precision-engineered for seamless installation.
  • Ideal for restoration or track-focused upgrades.

Whether you prefer a classic ducktail design, GT-style rear wing, or a carbon fibre adjustable aerofoil, our range of Porsche rear spoilers ensures you achieve the perfect blend of heritage and performance.

Highlights:

  • Premium Porsche rear spoilers and aerofoils for all models.
  • Engineered for aerodynamic performance and design accuracy.
  • Lightweight carbon fibre, fiberglass, or composite construction.
  • Direct-fit replacement or upgrade options available.
  • Ideal for both street and track applications.
  • Restores performance while elevating exterior styling.

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