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Lower Spoilers / Trays / Corner trims
Kit includes 1 x Adaptor kit and 1 x 991.1 front lip spoiler
Fits:
Porsche 718 Boxster / S / T- 2017 to 2024
Porsche 718 Cayman / S / T - 2017 to 2024
The OEM front lip spoiler solution for the Porsche 718 Boxster / Cayman with standard bumpers.
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 718 Porsche models (2017-24)
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 987 Boxster front end.
How our adapter kit works:
991 Spoiler mounting points are not compatible with the 718 Boxster / Cayman 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Related, superseded, cross reference or alternative numbers for comparison.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 Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
Front End Carbon Pack - Road Spec
Our GT4 front end carbon pack allows owners of GT4 and GT4 RS models to bring a full compliment of OEM grade 2x2 twill weave carbon to the front of their cars in our own unique Dissident designs.
Fits:
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
This road package features our Dissident styled air curtain configuration to be added with one small dive plane housed internally to keep a clean and conservative design. Also included in the package is our front splitter centre section and indicator shrouds all in 2x2 twill weave carbon which matches any external 718 carbon weave from factory.
Our components directly replace the OEM plastic parts. No cutting, permanent bonding, drilling or screwing into other components. Fully reversible to standard if required with fantastic fitment quality.
They are manufactured using pre-preg autoclave cured carbon fibre, the same approach used in the manufacture of hypercars and F1. They are finished in 2x2 carbon fibre twill weave to give a truly OEM+ look.
The components are shipped in high quality clear lacquer to provide a durable and UV stable finish.
All our components feature our unique designs and are made by hand in the UK and cured via autoclave in carbon fibre / metallic precision made tooling to deliver OEM grade components.
Kit Contains
- Carbon fibre front centre splitter
- Carbon fibre bumper end air curtains - road spec (left and right)
- Carbon fibre bumper side air vents (left and right)
- Carbon fibre indicator shrouds (left and right)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Front End Carbon Pack - Track Spec
Our GT4 front end carbon pack allows owners of GT4 and GT4 RS models to bring a full compliment of OEM grade 2x2 twill weave carbon to the front of their cars in our own unique Dissident designs.
Fits:
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
This track package features our most aggressive air curtain configuration with 2 larger dive planes protruding from each air-curtain. Also included in the package is our front splitter centre section and indicator shrouds all in 2x2 twill weave carbon which matches any external 718 carbon weave from factory.
Our components directly replace the OEM plastic parts. No cutting, permanent bonding, drilling or screwing into other components. Fully reversible to standard if required with fantatsic fitment quality.
They are manufactured using pre-preg autoclave cured carbon fibre, the same approach used in the manufacture of hypercars and F1. They are finished in 2x2 carbon fibre twill weave to give a truly OEM+ look.
The components are shipped in high quality clear lacquer to provide a durable and UV stable finish.
All our components feature our unique designs and are made by hand in the UK and cured via autoclave in carbon fibre / metallic precision made tooling to deliver OEM grade components. tooling to deliver OEM grade components.
Kit Contains
- Carbon fibre front centre splitter
- Carbon fibre bumper end air curtains - track spec (left and right)
- Carbon fibre bumper side air vents (left and right)
- Carbon fibre indicator shrouds (left and right)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Front End Carbon Pack without Air Curtain
Our GT4 front end carbon pack allows owners of GT4 and GT4 RS models to bring a full compliment of OEM grade 2x2 twill weave carbon to the front of their cars in our own unique Dissident designs.
Fits:
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
This non air curtain package features our Dissident styled bumper end air vents with no vertical curtain added to give the most OEM look in our 718 range. Also included in the package is our front splitter centre section and indicator shrouds all in 2x2 twill weave carbon which matches any external 718 carbon weave from factory.
Our components directly replace the OEM plastic parts. No cutting, permanent bonding, drilling or screwing into other components. Fully reversible to standard if required with fantatsic fitment quality.
They are manufactured using pre-preg autoclave cured carbon fibre, the same approach used in the manufacture of hypercars and F1. They are finished in 2x2 carbon fibre twill weave to give a truly OEM+ look.
The components are shipped in high quality clear lacquer to provide a durable and UV stable finish.
All our components feature our unique designs and are made by hand in the UK and cured via autoclave in carbon fibre / metallic precision made tooling to deliver OEM grade components.
Kit Contains
- Carbon fibre front centre splitter
- Carbon fibre bumper side air vents (left and right)
- Carbon fibre indicator shrouds (left and right)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Front End Carbon Pack - Road Spec in
Gloss Lacquered Carbon Fibre
Our Carbon Pack for 718 GT4 enables owners to fit a carefully curated range of our hand crafted UK made carbon parts. Made to our own unique designs to truly elevate the material palette of their car with material finishes not available in the standard GT4 range.
Fits:
- Porsche Cayman GT4 718 4.0L
With carbon added to the front, sides and rear of the car the cohesive theme looks incredible and includes front splitter with road spec air curtains. The front has our standard side bumper air vents and the road spec air curtains featuring small internal dive planes. Also included on the front bumper are our own unique indicator shrouds.
Moving to the side of the car we offer door triangles with an added lip in our “anti buffet” design helping to remove cabin booming when driving with the window open.
Finally at the rear of the car is our stunning full carbon rear wing with separate carbon endplates in.
UK made autoclave cured from carbon mould tools and CNC billet patterns to achieve outstanding levels of quality and fitment.
Direct replacements for existing parts – 100% reversible to stock.
Shipped in gloss clear carbon ready to fit.
All components available individually.
All parts supplied in Gloss Lacquered Carbon Fibre
Kit Contains
- Carbon fibre front centre splitter
- Carbon fibre bumper end air curtains - road spec (left and right)
- Carbon fibre bumper side air vents (left and right)
- Carbon fibre indicator shrouds (left and right)
- Door aero triangles (left and right)
- Rear wing with wing end plates
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Front End Carbon Pack - Track Spec in
Gloss Lacquered Carbon Fibre
Our Carbon Pack for 718 GT4 enables owners to fit a carefully curated range of our hand crafted UK made carbon parts. Made to our own unique designs to truly elevate the material palette of their car with material finishes not available in the standard GT4 range.
Fits:
- Porsche Cayman GT4 718 4.0L
With carbon added to the front, sides and rear of the car the cohesive theme looks incredible and includes front splitter with track spec air curtains. The front has our standard side bumper air vents and the track spec air curtains featuring a larger double dive plane arrangement with carbon inlays. Also included on the front bumper are our own unique indicator shrouds.
Moving to the side of the car we offer door triangles with an added lip in our “anti buffet” design helping to remove cabin booming when driving with the window open.
Finally at the rear of the car is our stunning full carbon rear wing with separate carbon endplates in.
UK made autoclave cured from carbon mould tools and CNC billet patterns to achieve outstanding levels of quality and fitment.
Direct replacements for existing parts – 100% reversible to stock.
Shipped in gloss clear carbon ready to fit.
All components available individually.
All parts supplied in Gloss Lacquered Carbon Fibre
Kit Contains
- Carbon fibre front centre splitter
- Carbon fibre bumper end air curtains - track spec (left and right)
- Carbon fibre bumper side air vents (left and right)
- Carbon fibre indicator shrouds (left and right)
- Door aero triangles (left and right)
- Rear wing with wing end plates
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Front End Carbon Pack without Air Curtains in
Gloss Lacquered Carbon Fibre
Our Carbon Pack for 718 GT4 enables owners to fit a carefully curated range of our hand crafted UK made carbon parts. Made to our own unique designs to truly elevate the material palette of their car with material finishes not available in the standard GT4 range.
Fits:
- Porsche Cayman GT4 718 4.0L
With carbon added to the front, sides and rear of the car the cohesive theme looks incredible and includes front splitter without air curtains. The front has our standard side bumper air vents and centre splitter. Also included on the front bumper are our own unique indicator shrouds.
Moving to the side of the car we offer door triangles with an added lip in our “anti buffet” design helping to remove cabin booming when driving with the window open.
Finally at the rear of the car is our stunning full carbon rear wing with separate carbon endplates in.
UK made autoclave cured from carbon mould tools and CNC billet patterns to achieve outstanding levels of quality and fitment.
Direct replacements for existing parts – 100% reversible to stock.
Shipped in gloss clear carbon ready to fit.
All components available individually.
All parts supplied in Gloss Lacquered Carbon Fibre
Kit Contains
- Carbon fibre front centre splitter
- Carbon fibre bumper side air vents (left and right)
- Carbon fibre indicator shrouds (left and right)
- Door aero triangles (left and right)
- Rear wing with wing end plates
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Fits:
Porsche 718 Boxster / S / T- 2017 to 2024
Porsche 718 Cayman / S / T - 2017 to 2024
The OEM front lip spoiler solution for the Porsche 718 Boxster / Cayman with standard bumpers.
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 718 Porsche models (2017-24)
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 987 Boxster front end.
How our adapter kit works:
991 Spoiler mounting points are not compatible with the 718 Boxster / Cayman 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 Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
Fits:
Porsche 718 Cayman GT4 RS - 2022 Onwards
Diagram ref no 5
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9828077
The product you are viewing cross references to these numbers
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Fits:
Porsche 982 Cayman GT4 2019>
Diagram ref no 3
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
982807543LOK1
The product you are viewing cross references to these numbers
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Fits:
Porsche 718 Cayman GT4 RS
First-Time Abundance of Front Downforce for the GT4 RS
The Porsche GT4 model has long been criticized by track enthusiasts for lacking front downforce. However, the SR AeroShield has changed this situation. The Aeroshield provides the GT4 RS with unprecedented front and mid-front downforce. Players can freely adjust the front downforce of the GT4RS by changing canards to suit different types of tracks.
Drag-Free Downforce
Not all downforce is created equal. The underbody downforce generated from Venturi effects, boasts the highest downforce-to-drag ratio, ensuring superior performance without compromising speed.
More Balanced Downforce
The SR AeroShield enhances underbody airflow, generating an impressive 65 kg of additional downforce at 200 km/h. Most importantly, this downforce is evenly distributed along the underbody, resulting in a more balanced and stable driving experience at high speeds. To ensure SR customers achieve the most optimal results from our Aero Pack, we conducted intensive track testing with professional drivers to identify the ideal aerodynamic balance setup. Below is the recommended Aero Balance Table, summarized from all track testing data.
Stealth Performance in 20 minutes
The SR Front Aeroshield is designed to be virtually invisible, allowing for quick installation or removal in just 20 minutes—dominating the track like a wolf in sheep's clothing.
No impact on daily usage
The AeroShield is engineered to maintain the OEM minimum clearance, ensuring that your GT4 RS remains fully functional for everyday driving.
A cutting edge shield protecting your Porsche OEM underbody
Constructed from high-strength, aerospace-grade dry carbon fiber, the SR Aeroshield boasts a strength that is 4.3 times greater than that of aluminum. It provides exceptional protection for the front OEM underbody aluminum tub.
Important Notice
The SR Front AeroShield is meticulously designed to optimize downforce when paired with the SR DRS-1/Clubsport Wing (9GT825871A/2KIT) at high speeds. Through extensive CFD simulations and track testing, we have gathered the necessary setup data to ensure an ideal aerodynamic balance. Detailed AeroBalance setup Table is provided in the pictures section.
To maintain driving safety and aerodynamic stability at high speeds, SR intends to sell the AeroShield exclusively with the DRS-1/Clubsport Wing, or to existing customers who have already purchased the DRS-1/Clubsport wing. However, we have received numerous inquiries from customers who already bought wings from other brands.
The SR AeroShield has only been tested and aerodynamically matched with the DRS-1/Clubsport Wing so if used with any other rear wing, this is done at the owners risk
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99150460109
The product you are viewing cross references to these numbers
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L

Fits:
Porsche 718 Boxster Spyder - 2019 to 2024
Porsche 718 Cayman GT4 - 2019 to 2024
Click 'Zoom in' for large parts diagram.
Diagram ref no 4
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98280751
The product you are viewing cross references to these numbers
- Porsche Boxster Spyder / Spyder RS 718 4.0L 01/2019>>
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
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.