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Lower Spoilers / Trays / Corner trims
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Ground clearance from centre of spoiler - 105mm to 115mm
Fits:
Porsche 997.1 Carrera / Carrera 4 - 2005 to 2008
Porsche 997.1 Carrera S / Carrera 4S - 2005 to 2008
Applicable for cars with Standard and Sports Suspension, with and without PASM
Not applicable for cars with Sports Suspension and PASM
The OEM front lip spoiler solution for the Porsche 997.1 with standard bumpers.
Ground Clearance at Centre of Spoiler - Standard Suspension
Non PASM - 115mm
PASM - 105mm
A properly integrated and quality solution for your Porsche using the newer generation 991.1 OEM Porsche sports spoiler and a purpose built adapter kit to achieve compatibility with 997.1 Porsche models (2005-08)
Benefits of the 991 OEM Spoiler?
It creates a front-end aerodynamic profile similar to newer models and provides more usability than wrap-around spoilers due to increased ground clearance at the corners. It’s an original Porsche part that looks great and provides a refreshing update to the 997 front end.
How our adapter kit works:
991 Spoiler mounting points are not compatible with the 997 so the kit solves this problem with a unique set of adapters that:
- are strong, secure and will not damage your bumper in cases of spoiler scraping or impacts
- eliminate the risk of damaging components (such as headlight washer lines) inside the bumper
- are both re-usable and reversible
Installation:
Almost zero DIY skills are needed
Step by step instructions provided
30 - 60 minutes of quality time with your 911 depending on the kit
No need to remove the bumper
A jack or ramps to raise the front of the car makes installation very simple
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99150552501
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Ground clearance from centre of spoiler - 115mm to 125mm - Suitable for daily drivers
Fits:
Porsche 997.1 Carrera / Carrera 4 - 2005 to 2008
Porsche 997.1 Carrera S / Carrera 4S - 2005 to 2008
The OEM front lip spoiler solution for the Porsche 997.1 with standard bumpers. Applicable for cars with and without PASM, Standard and Sports Suspension
Ground Clearance at Centre of Spoiler - Standard Suspension
Non PASM - 125mm
PASM - 115mm
Kit comes with the Optional Side Splitters
Suitable for daily drivers due to greater ground clearance than Adaptor Kit A
A properly integrated and quality solution for your Porsche using the newer generation 991.1 OEM Porsche sports spoiler and a purpose built adapter kit to achieve compatibility with 997.1 Porsche models (2005-08)
Benefits of the 991 OEM Spoiler?
It creates a front-end aerodynamic profile similar to newer models and provides more usability than wrap-around spoilers due to increased ground clearance at the corners. It’s an original Porsche part that looks great and provides a refreshing update to the 997 front end.
How our adapter kit works:
991 Spoiler mounting points are not compatible with the 997 so the kit solves this problem with a unique set of adapters that:
- are strong, secure and will not damage your bumper in cases of spoiler scraping or impacts
- eliminate the risk of damaging components (such as headlight washer lines) inside the bumper
- are both re-usable and reversible
Installation:
Almost zero DIY skills are needed
Step by step instructions provided
30 - 60 minutes of quality time with your 911 depending on the kit
No need to remove the bumper
A jack or ramps to raise the front of the car makes installation very simple
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99150552501
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Ground clearance from centre of spoiler - 105mm to 115mm
Fits:
Porsche 997.1 Carrera / Carrera 4 - 2005 to 2008
Porsche 997.1 Carrera S / Carrera 4S - 2005 to 2008
Applicable for cars with Standard and Sports Suspension, with and without PASM
Not applicable for cars with Sports Suspension and PASM
The OEM front lip spoiler solution for the Porsche 997.1 with standard bumpers.
Ground Clearance at Centre of Spoiler - Standard Suspension
Non PASM - 115mm
PASM - 105mm
A properly integrated and quality solution for your Porsche using the newer generation 991.1 OEM Porsche sports spoiler and a purpose built adapter kit to achieve compatibility with 997.1 Porsche models (2005-08)
Benefits of the 991 OEM Spoiler?
It creates a front-end aerodynamic profile similar to newer models and provides more usability than wrap-around spoilers due to increased ground clearance at the corners. It’s an original Porsche part that looks great and provides a refreshing update to the 997 front end.
How our adapter kit works:
991 Spoiler mounting points are not compatible with the 997 so the kit solves this problem with a unique set of adapters that:
- are strong, secure and will not damage your bumper in cases of spoiler scraping or impacts
- eliminate the risk of damaging components (such as headlight washer lines) inside the bumper
- are both re-usable and reversible
Installation:
Almost zero DIY skills are needed
Step by step instructions provided
30 - 60 minutes of quality time with your 911 depending on the kit
No need to remove the bumper
A jack or ramps to raise the front of the car makes installation very simple
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99150552501
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Ground clearance from centre of spoiler - 115mm to 125mm - Suitable for daily drivers
Fits:
Porsche 997.1 Carrera / Carrera 4 - 2005 to 2008
Porsche 997.1 Carrera S / Carrera 4S - 2005 to 2008
The OEM front lip spoiler solution for the Porsche 997.1 with standard bumpers. Applicable for cars with and without PASM, Standard and Sports Suspension
Ground Clearance at Centre of Spoiler - Standard Suspension
Non PASM - 125mm
PASM - 115mm
Kit comes with the Optional Side Splitters
Suitable for daily drivers due to greater ground clearance than Adaptor Kit A
A properly integrated and quality solution for your Porsche using the newer generation 991.1 OEM Porsche sports spoiler and a purpose built adapter kit to achieve compatibility with 997.1 Porsche models (2005-08)
Benefits of the 991 OEM Spoiler?
It creates a front-end aerodynamic profile similar to newer models and provides more usability than wrap-around spoilers due to increased ground clearance at the corners. It’s an original Porsche part that looks great and provides a refreshing update to the 997 front end.
How our adapter kit works:
991 Spoiler mounting points are not compatible with the 997 so the kit solves this problem with a unique set of adapters that:
- are strong, secure and will not damage your bumper in cases of spoiler scraping or impacts
- eliminate the risk of damaging components (such as headlight washer lines) inside the bumper
- are both re-usable and reversible
Installation:
Almost zero DIY skills are needed
Step by step instructions provided
30 - 60 minutes of quality time with your 911 depending on the kit
No need to remove the bumper
A jack or ramps to raise the front of the car makes installation very simple
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99150552501
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Fits:
Porsche 997.1 - 2005 to 2008
Click 'Zoom in' for large parts diagram.
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99750552
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08

Fits:
Porsche 997.1 Carrera 2005-08
For cars with Aerokit (IXXA)
Click 'Zoom in' for large parts diagram.
Diagram ref no 17
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99750598315
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
Fits:
Porsche 997 2004-08 *car with GT3 or Aero kit front bumper
Porsche 997 GT3
Material:
Polyuathane PU
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99750598398
The product you are viewing cross references to these numbers
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.
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MK1 GT3 / GT3 RS 2007-09

Fits:
Porsche 997 2004-08 *** car with GT3 or Aero kit front bumper
Porsche 997 GT3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99750598398
The product you are viewing cross references to these numbers
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.
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Spoiler For Front Bumper, Satin Black
Genuine Porsche front bumper spoiler in satin black for Porsche 997.1 Carrera 2, Carrera 2S, Carrera 4 and Carrera 4S models from 2005–08. This model-specific exterior component fits along the lower section of the original front bumper.
Fits
- Porsche 997 MK1 Carrera 2 3.6L 2005–08
- Porsche 997 MK1 Carrera 2S 3.8L 2005–08
- Porsche 997 MK1 Carrera 4 3.6L 2005–08
- Porsche 997 MK1 Carrera 4S 3.8L 2005–08
What This Product Does
The spoiler completes the lower edge of the front bumper and helps restore the original exterior profile. It is suitable for replacing an existing spoiler that has become cracked, distorted, heavily marked or detached following contact with a kerb or road debris.
Functions
- Forms the lower section of the front bumper assembly
- Maintains the factory exterior profile
- Directs airflow around the lower front bodywork
- Provides a direct replacement for a damaged or missing spoiler
- Integrates with the associated bumper linings, covers and retaining frames
Technical Details
- Genuine Porsche component
- Porsche part number: 9975055570001C, 9975055571801C
- Position: front bumper
- Finish: satin black
- Diagram reference: 17
- Application: Porsche 997.1 Carrera models, 2005–08
Symptoms of Fault
- Cracks or missing sections caused by kerb contact
- Deep scuffs or impact damage from road debris
- Broken or distorted mounting points
- A loose or sagging lower bumper edge
- Visible gaps or poor alignment with the front bumper
- Faded, scratched or deteriorated surface finish
Why Replacement Matters
Replacing a damaged spoiler restores the correct lower bumper profile and helps prevent a loose component from placing additional strain on adjacent fixings. Inspect the retaining frames, mounting points and fasteners during installation, as ageing or impact-damaged supporting parts may also require attention. The supplied information does not state that mounting hardware is included.
FAQs
- Is this a genuine Porsche part?
Yes. This is a genuine Porsche front bumper spoiler identified by part number 9975055570001C / 9975055571801C. - Is the spoiler supplied in satin black?
Yes. The specified finish for this exact part number is satin black. - Does it fit every Porsche 997?
No. The supplied application covers the listed 997.1 Carrera 2, 2S, 4 and 4S models from 2005–08. Confirm the original part number and bumper specification before fitting.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9975055571801C
The product you are viewing cross references to these numbers
Improve your Porsche’s aerodynamics, protection, and appearance with lower spoilers, undertrays, and corner trims from Design911. These components are designed to enhance airflow, reduce drag, and protect critical underbody areas from road debris and damage. Made to OEM specifications, each piece fits perfectly - maintaining Porsche’s precision engineering and sleek design. Lower spoilers help improve stability at higher speeds, undertrays protect the engine and suspension from dirt and impact, while corner trims complete the lower bodyline for a refined, factory-correct finish. Whether you’re replacing worn panels or upgrading for performance, Design911 offers durable, model-specific solutions for all Porsche vehicles.
Front Lower Spoilers & Splitters
Aerodynamic Porsche front spoilers and splitters designed to
reduce front-end lift, increase downforce, and enhance road-holding at high
speeds. Available for both classic and modern Porsche models.
Corner Trims & Valance Panels
Precision-moulded corner trims and valance panels that
complete the lower bumper section and maintain your Porsche’s seamless,
aerodynamic look.
Classic Porsche Aero Components
Authentic lower spoilers and trims for vintage Porsche
models like the 911 Classic, 930 Turbo, and 964. Crafted for originality and
period-correct performance.
Mounting Kits & Hardware Accessories
OEM-grade brackets, fasteners, and hardware sets for easy
installation of Porsche lower spoilers, undertrays, and trims — ensuring
long-term fit and finish.