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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://design91.uk/images/schemaLogo.png https://design91.uk/images/schemaLogo.png +443456003478 https://design91.uk Facebook Instagram
Porsche specialists based in the UK
Porsche > 991 (911) MK2 2016-2019 > Exterior Styling / Spoilers >

Moshammer

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DISPLAYING 17 to 21 (of 21 products)
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Rear diffuser. Porsche 991.2 Carrera S / 4S / GTS - P991.42.3040
2
Rear diffuser. Porsche 991.2 Carrera S / 4S / GTS
P991.42.3040
Product Information
Product Information
Rear diffuser.
With TÜV parts certificate (§19.3), Also recognized in Switzerland

moshammer

Fits:
Porsche 991.2 Carrera S | 4S | GTS (PSE)

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

This rear diffuser 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Related, superseded, cross reference or alternative numbers for comparison.

P991.42.3040
P991.42.3040

The product you are viewing cross references to these numbers
Rear diffuser. Porsche 991.2 Turbo - P991.20.3040
2
Rear diffuser. Porsche 991.2 Turbo
P991.22.3040
Product Information
Product Information
Rear diffuser.
With TÜV parts certificate (§19.3), Also recognized in Switzerland

moshammer

Fits:
Porsche 991.2 Turbo | Turbo S

The 991.2 Turbo rear diffuser ensures the best possible aerodynamic properties and is at the same time a beautiful oem+ design element that gives your porsche a unique appearance.

Our rear diffuser ensures the highest possible downforce. An important component for both cooling and aerodynamics.
Ensuring the removal of hot air. Optimized exhaust system cooling like the GT models. (vented diffuser frame incl. mesh grills)

This rear diffuser 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.

P991.22.3040
P991.20.3040

The product you are viewing cross references to these numbers
Rear wing spoiler extension. Porsche 991 Turbo - P991.20.3020
3
Rear wing spoiler extension. Porsche 991 Turbo
P991.20.3020
Product Information
Product Information
Rear wing spoiler extension.
With TÜV parts certificate (§19.3), Also recognized in Switzerland.

moshammer

Fits:
Porsche 991 Turbo | Turbo S
Not for models with original Aerokit.

The 991 Turbo rear spoiler extension ensures the best possible aerodynamic properties and is at the same time a beautiful oem+ design element that gives your Porsche a unique appearance.

Our 991 Turbo rear spoiler extension ensures the highest possible downforce. The original height adjustment and lowering are of course unchanged. The Porsche active aerodynamic rear spoiler functional capability stays and is not impaired.

MOSHAMMER® Patented mounting system, plug & play without drilling, and no screwing!

This Rear wing spoiler extension 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.

P991.20.3020
P991.20.3020

The product you are viewing cross references to these numbers
Side skirts (wide body). Porsche 991 C4 - P991.40.2020
1
Side skirts (wide body). Porsche 991 C4
Special Offer
P991.40.2020
Product Information
Product Information
Side skirts (wide body)
With TÜV parts certificate (§19.3), Also recognized in Switzerland

moshammer

Fits:
Porsche 991 Carrera 4 | 4S | GTS 4 |Targa | Cabriolet | All wide-body models (C4)


The 991 side skirts ensures the best possible aerodynamic properties and is at the same time a beautiful oem+ design element that gives your Porsche a unique appearance. Our side skirts are much wider than the standard components, which leads to a wider underbody and therefore more downforce.

This Side skirts 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.

P991.40.2020
P991.40.2020

The product you are viewing cross references to these numbers
Side skirts. Porsche 991 Turbo - P991.22.2020
2
Side skirts. Porsche 991 Turbo
P991.22.2020
Product Information
Product Information
Side skirts.
With TÜV parts certificate (§19.3) Also recognized in Switzerland.

moshammer

Fits:
Porsche 991 Turbo | Turbo S | GT3 RS

The 991 Turbo side skirts ensure the best possible aerodynamic properties and are at the same time a beautiful oem+ design element that gives your Porsche a unique appearance.

Our Performance Side Skirts are much wider than the stock components. Leading to a wider underbody and thus to more downforce.

This side skirts 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.

P991.22.2020
P991.22.2020

The product you are viewing cross references to these numbers
DISPLAYING 17 to 21 (of 21 products)
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About Moshammer

Moshammer Exterior Styling - OEM-Plus Aerodynamic Design

Moshammer exterior styling components are renowned for their clean, functional aerodynamic design and OEM-plus philosophy. Developed in Germany with a focus on performance balance rather than excess, Moshammer upgrades enhance Porsche styling through subtle aero improvements, refined proportions, and motorsport-inspired detailing that integrates seamlessly with factory bodywork.

At Design911, our Moshammer range features authentic, Porsche-specific exterior components engineered to deliver understated performance styling without compromising the car’s original design language.

 What Do Moshammer Styling Components Do?

Moshammer components refine exterior appearance while improving aerodynamic intent.

Core Functions:

  • Enhance aerodynamic balance and airflow aesthetics
  • Add subtle motorsport-inspired styling details
  • Maintain factory-correct proportions and fitment
  • Improve visual stance without aggressive modification
  • Deliver functional, performance-led exterior design

These upgrades prioritise function, balance, and Porsche authenticity.

Why Upgrade to Moshammer Styling?

Upgrading delivers refined performance styling with OEM-level integration.

Upgrade Benefits:

  • Achieve an OEM-plus look trusted by Porsche enthusiasts
  • Enhance aerodynamics without compromising usability
  • Maintain vehicle value and factory design integrity
  • Ideal for fast-road, track-day, and daily-driven cars
  • Pair perfectly with suspension, wheel, and brake upgrades

Moshammer components from Design911 are selected for precision engineering, durability, and clean design execution.

Highlights

  • Genuine Moshammer exterior styling components
  • Porsche-specific aerodynamic and styling upgrades
  • Precision-engineered for accurate fitment
  • Subtle performance styling with motorsport influence
  • Ideal for refined, enthusiast-focused builds       

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