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Design911 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://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk/images/schemaLogo.png https://www.design911.co.uk Facebook Instagram
Porsche specialists based in the UK
Porsche 911 & 912 (1965-1989) Exterior Styling / Spoilers Conversions & Backdate Kits

2.5 ST Look

2.5 ST Look

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DISPLAYING 17 to 20 (of 20 products)
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Side Sill Moulding + Rubber Seal. Porsche 911 ST / Wide Look - 90155910599 - CB.022.009
3
Side Sill Moulding + Rubber Seal. Porsche 911 ST / Wide Look
90155910599
Product Information
Product Information
Side Sill Moulding + Rubber Seal For ST Look Or Wide Body.
Restore the distinctive appearance and weather protection of your Porsche with this OE Match Side Sill Moulding with Rubber Seal, manufactured as a direct replacement. Produced to OE-style specifications, this side sill moulding is designed for ST Look and Wide Body models, providing a factory-style finish while protecting the sill area from dirt, moisture, and road debris.

Please note these are longer side sills 62inch, you will need to bend the ends so they fit snug to your wide body arches

Fits:
  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  • Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L
  • Porsche 911 1987-1989 3.2L G50


The side sill moulding enhances both the appearance and functionality of the vehicle by creating a neat transition between the bodywork and lower sill. The integrated rubber seal helps minimise the ingress of water, dust, and debris, protecting the bodywork and contributing to a clean, finished appearance. Over time, exposure to the elements, road debris, UV light, and everyday use can cause the moulding to become damaged, distorted, or faded, while the rubber seal may harden, crack, or lose its effectiveness. Replacing both components together restores the original appearance and sealing performance, making this OE Match assembly ideal for routine maintenance, body repairs, and Porsche restoration projects.

What This Product Does:

  • Provides a factory-style finish to the side sill area.
  • Helps protect the sill from dirt, moisture, and road debris.
  • Creates a neat transition between body panels.
  • Improves the appearance of ST Look and Wide Body models.
  • Replaces worn, damaged, or missing original mouldings.
  • Restores effective sealing with the integrated rubber seal.
  • Provides an OE-style fit and dependable quality.

Symptoms Of Wear Or Failure:
  • Cracked, warped, or damaged side sill moulding.
  • Hardened, split, or perished rubber seal.
  • Loose or poorly fitting sill trim.
  • Water or dirt collecting behind the moulding.
  • Faded or weathered exterior trim.
  • Missing sections of moulding or seal.
  • Damage caused by road debris or impact.
  • Age-related deterioration of the original components.

Why Replacement Matters:
  • The side sill moulding and rubber seal help protect the lower bodywork while providing the clean, factory-style appearance expected of a well-maintained Porsche. Worn or damaged components can allow dirt and moisture to collect around the sill, increasing the risk of corrosion while detracting from the vehicle's overall appearance.
  • Replacing the side sill moulding and rubber seal restores the original fit, finish, and protective function of the sill assembly. Manufactured as a direct replacement and produced to OE-style specifications, this OE Match component provides the correct fit, dependable quality, and long-lasting durability, making it an excellent choice for Porsche maintenance, body repairs, and restoration projects.



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

90155910599
90155910599

The product you are viewing cross references to these numbers
Side skirts Singer Look for Porsche 911 G / 964 (backdate to 911 2.5 ST / Singer look) (1974–1989)
2
Side skirts Singer Look for Porsche 911 G / 964 (backdate to 911 2.5 ST / Singer look) (1974–1989)
964SKIRTSST
Product Information
Product Information
Singer look side skirts
The side skirts complete the lower body profile between the widened wheel arches, providing a smoother and more integrated appearance. They help transform a G-Series or 964 backdate into a distinctive 2.5 ST-inspired wide-body build, complementing compatible front wings, rear quarter panels, bumpers and other conversion components.

Fits:
Porsche 911 G-Series 1974–1989
Porsche 964 Carrera 2 / Carrera 4 1989–1994
*** Suitable only for vehicles fitted with, or being converted to, 2.5 ST-style widened front and rear bodywork; it is not intended as a direct fit for an unmodified narrow-body car ***

Key Features & Benefits
•  High-quality GRP construction
•  Designed for 2.5 ST-width bodywork
•  Suitable for G-Series and 964 backdate projects
•  Creates a lower, more cohesive side profile
•  Supplied unfinished for custom preparation and paint
•  Ideal for restorations, restomods and bespoke performance builds

NOTE:  By purchasing these parts, you accept that minor adaptation, trimming, or modification may be required for proper fitment. Professional installation is strongly recommended. All parts must be test-fitted prior to priming and painting to confirm alignment and determine any necessary adjustments. Parts are supplied unfinished and will require surface preparation (such as sanding, filling, and priming) before final finishing.

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.
Smooth look interior package (rear seat delete) Porsche 911 G Models 1974-89
3
Smooth look interior package (rear seat delete) Porsche 911 G Models 1974-89
91150091111
Product Information
Product Information
Smooth look interior package (no rear seats) 911 1974-89
This is a fibre glass & carbon material interior package, it has 12pcs in the package to give the interior a smooth painted look, this should only be fitted by an expert body shop as some adjustments are required while fitting

Fits:
LHD (left hand dive) or RHD (right hand drive) cars 
Porsche 911 G 1974-89
PLEASE NOTE:
Due to its size, weight or fragility, this item requires additional protective packaging to make sure it reaches you undamaged. A small packing surcharge is applied to cover these specialist materials and the extra care taken preparing your order for transit.
Steel wheel arch extensions. Porsche 911ST Look - 91150390510, 91150390610, 91150390710, 91150390810, 91150330701, 91150390100
5
Steel wheel arch extensions. Porsche 911ST Look
91150390
Product Information
Product Information
911ST Steel flares are a perfect fitment as these are made out of steel in one piece with a 400 ton press a CAD scans of 3 original cars was made before producing these arches.

Fits:
Porsche 911 1969-89

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

91150390
91150390510
91150390610
91150390710
91150390810
91150330701
91150390100

The product you are viewing cross references to these numbers
DISPLAYING 17 to 20 (of 20 products)
1 2
About 2.5 ST Look

Porsche 2.5 ST Look Conversion Kits - Classic Motorsport Widebody Style

Porsche 2.5 ST Look conversion kits recreate the aggressive, race-bred styling of the legendary early-1970s 911 ST—a car developed for endurance racing and wide-arch performance. Defined by its flared arches, lightweight panels, and purposeful stance, the 2.5 ST remains one of the most desirable classic Porsche competition looks.

At Design911, our Porsche 2.5 ST Look kits allow enthusiasts to capture this iconic motorsport aesthetic on later-model 911 platforms, blending authentic period styling with modern foundations, reliability, and usability.

What Do Porsche 2.5 ST Look Kits Do?

2.5 ST Look kits transform later Porsche 911s into wide-bodied, race-inspired classics.

Core Functions:

  • Replicate the distinctive wide-arch styling of the Porsche 911 2.5 ST
  • Replace standard body panels with motorsport-inspired components
  • Allow fitment of wider wheels and performance tyres
  • Enhance stance, grip potential, and visual presence
  • Create a historically inspired, competition-style Porsche build

These kits celebrate early Porsche racing heritage with unmistakable character.

Why Do Porsche 2.5 ST Look Kits Fail?

Not all ST-style conversions meet the expectations of serious enthusiasts.

Common Failure Causes:

  • Incorrect arch profiles that compromise ST proportions 
  • Poor panel fitment resulting in inconsistent body gaps
  • Inferior materials prone to cracking or distortion 
  • Lack of authenticity in styling details
  • Older kits lacking modern manufacturing accuracy

Low-quality conversions can diminish both visual impact and long-term value.

Why Replace or Upgrade Your 2.5 ST Look Kit?

Upgrading ensures authenticity, durability, and professional finish.

Upgrade Benefits:

  • Accurate wide-arch profiles true to the original 2.5 ST
  • Improved panel fit and alignment
  • Stronger, lighter materials for long-term reliability
  • Enhanced build credibility and resale appeal
  • A race-correct appearance that stands up to close inspection

Porsche 2.5 ST Look kits from Design911 are engineered for enthusiasts who value detail and heritage accuracy.

Highlights

  • Porsche 2.5 ST Look conversion components
  • Motorsport-inspired wide wheel arches and panels 
  • Precision-engineered for correct fitment
  • Suitable for impact bumper and classic-based 91 builds
  • Ideal for restomod and historic racing-style projects       

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