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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://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram

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Product Information
Product Information
Lightweight doors with window frame fiberglass. Porsche 911 1965-89
Set of 2 doors Left & Right 

fibreglass

Fits:
Porsche 911 - 1965 to 1989
Porsche 964 - 1989 to 1994
Porsche 993 - 1994 to 1997

Please note: This part is on special order terms. It will be made to order that could take 6-8+ weeks. It is not a subject to cancellation or return if not required.

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Related, superseded, cross reference or alternative numbers for comparison.

91150540555
91150540555
90153100521GRV
90153100621GRV
91153100500GRV
91153100600GRV
91153100506GRV
91153100606GRV
91153100509GRV
91153100609GRV
91153100623GRV
91153100521GRV
91153100621GRV
91153100523GRV

The product you are viewing cross references to these numbers
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About Lightweight Doors

Lightweight Doors - Weight Reduction & Performance Styling

Lightweight doors are a key upgrade for drivers seeking improved performance, sharper handling, and motorsport-inspired styling. By significantly reducing overall vehicle weight—especially high and side-mounted mass—lightweight doors improve acceleration, braking efficiency, and cornering balance while giving your Porsche a purposeful, track-ready appearance.

At Design911, our Lightweight Doors category features precision-engineered replacements designed for performance road cars, fast-road builds, and dedicated track vehicles.

What Do Lightweight Doors Do?

Lightweight doors reduce mass while maintaining structural integrity and correct fitment.

Core Functions:

  • Reduce vehicle weight for improved performance
  • Lower centre of gravity and improve weight distribution
  • Enhance acceleration, braking, and cornering response
  • Deliver a motorsport-inspired exterior appearance
  • Support competitive track and race applications

These upgrades are particularly effective when combined with other weight-saving components.

Why Do Standard Doors Fail or Limit Performance?

Factory doors are designed for comfort, safety features, and sound insulation, which can limit performance.

Common Issues:

  • Excessive weight due to steel construction and internal mechanisms
  • Reduced performance in track or race environments
  • Corrosion or fatigue in older door shells
  • Damage from impacts or long-term wear
  • Incompatibility with stripped-out or race-focused interiors

For performance builds, factory doors often become a bottleneck in achieving optimal weight reduction.

Why Upgrade to Lightweight Doors?

Upgrading delivers immediate and measurable performance gains.

Upgrade Benefits:

  • Significant weight reduction compared to OEM doors
  • Improved handling, agility, and driver feedback
  • Available in lightweight composite or carbon fibre materials
  • Designed for precise Porsche fitment and race use
  • Ideal for track days, time attack, and motorsport builds

Lightweight doors from Design911 are engineered to balance performance, durability, and styling.

Highlights

  • Porsche-specific lightweight door solutions
  • Optimised for performance and weight reduction
  • Suitable for fast-road, track, and race vehicles
  • Motorsport-inspired design and materials
  • Precision-engineered for correct alignment and fit       

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