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Porsche // Cayman 718C (982C) 2017>> // Cayman GT4 RS Clubsport 2020-2024
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- Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
Fits:
Porsche 991 GT3 >>2017
Click 'Zoom in' for large parts diagram.
Diagram ref no 34
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99151256
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for Front spoiler lip part number FA273 and FA277
• Universal spoiler stabilizers for all types of vehicles
• With these stabilizers you will provide your fasteners with better adhesion to the vehicle
• Increased stability at high speeds
• Racing / rally look
• Set consisting of 2 stabilizers
• Adjustable length
• Ends can be rotated 360 degrees
• Includes fastening materials
Technical data:
• Length: 200-260mm
• Material: aluminium/stainless steel
• Available colours: blue, gold, red, black, silver,
Please note: This is a special-order item, can take 8-12 weeks to be delivered and once ordered cannot be cancelled.
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ZB16
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- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche Cayman GT4 RS Clubsport 2020-2024
SilverRocket DRS-1 Dry Carbon Fibre Rear Wing Endplates –
Advanced Aerodynamics for Porsche 718 GT4 RS
The SilverRocket DRS-1 Dry Carbon Fibre Rear Wing Endplates
redefine aerodynamic performance and visual precision for the Porsche 718
GT4 RS. Designed for drivers seeking both speed and stability, these
endplates are engineered from aerospace-grade dry carbon fibre,
delivering a 50% weight reduction compared to standard plastic alternatives
while improving aerodynamic efficiency and structural rigidity.
Fits:
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche Cayman GT4 RS Clubsport
2020-2024
Paired with the SilverRocket mini gurney flap, the DRS-1 endplates generate an 8.3% increase in rear downforce at 200 km/h, resulting in enhanced high-speed balance, improved cornering grip, and a more planted feel during aggressive driving or track sessions.
Developed through Computational Fluid Dynamics (CFD) simulation and verified through wind tunnel testing, these endplates exemplify SilverRocket’s commitment to precision-engineered, motorsport-grade performance parts for Porsche GT applications.
What Do Rear Wing Endplates Do?
Rear wing endplates are critical components that shape how air
flows over and around the rear wing. Their primary function is to manage
airflow efficiency and maintain aerodynamic stability.
Core Functions:
- Increase
rear downforce by
containing airflow across the wing surface.
- Reduce
drag and turbulence
created by high-speed air separation.
- Stabilise
vehicle balance
during cornering and braking.
- Improve aerodynamic consistency, optimising handling and traction.
By refining airflow and limiting lateral air escape, the DRS-1
endplates help your GT4 RS maintain high-speed stability, improving both lap
times and driver confidence.
Why Do Rear Wing Endplates Fail?
Over time, standard plastic or composite endplates degrade due
to the extreme aerodynamic and thermal stresses placed on them during
performance driving. Common issues include:
- Cracking
or fatigue from
high-speed aerodynamic loads.
- Material
flex that reduces
downforce effectiveness.
- UV
damage and heat deformation, compromising structural integrity.
- Loose mounting points from vibration or impact.
SilverRocket’s dry carbon fibre construction eliminates these weaknesses by offering unmatched stiffness, lower weight, and superior heat resistance, ensuring long-term reliability and consistent aerodynamic performance.
Why Upgrade to SilverRocket DRS-1 Dry
Carbon Fibre Endplates?
The DRS-1 endplates are not just lighter — they’re smarter,
stronger, and more aerodynamically efficient. Using motorsport-grade
carbon weave and advanced resin bonding, these components enhance your GT4
RS’s performance and appearance.
Key Benefits:
8.3%
increase in rear downforce at 200 km/h (with the SilverRocket mini gurney flap).
- 50%
lighter than standard
plastic endplates.
- Improved
high-speed stability
and aerodynamic balance.
- CFD-optimised
design for precision
airflow management.
- Heat
and UV-resistant finish
ensures long-term durability.
- Enhanced
visual appeal with
exposed dry carbon fibre weave.
- Perfect fitment and alignment, designed for direct installation on Porsche 718 GT4 RS.
These upgrades are designed for performance enthusiasts,
track-day drivers, and those who demand motorsport precision with refined
styling.
Highlights:
- 8.3%
increase in rear downforce at 200 km/h, delivering measurable aerodynamic gains.
- Dry
carbon fibre construction
that’s 50% lighter than manufacturer-standard alternatives.
- Motorsport-grade
weave and resin composition for maximum strength and rigidity.
- CFD-engineered
and track-tested for
superior airflow control.
- Sleek,
exposed carbon aesthetic
complements Porsche’s GT design language.
- Precision mounting design ensures easy installation and perfect aerodynamic alignment.
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9GT827867A
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- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche Cayman GT4 RS Clubsport 2020-2024
SilverRocket Dry Carbon Mini Gurney Flap – Aerodynamic
Precision for Porsche 718 GT4 RS
The SilverRocket Dry Carbon Mini Gurney Flap is a
precision-engineered aerodynamic enhancement designed to optimise rear
downforce and visual appeal for the Porsche 718 GT4 RS. Crafted from aerospace-grade
dry carbon fibre, this component delivers exceptional rigidity,
ultra-lightweight performance, and refined styling inspired by modern GT
racing.
Fits:
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche Cayman GT4 RS Clubsport
2020-2024
When paired with SilverRocket’s DRS-1 Dry Carbon Rear Wing Endplates, the Mini Gurney Flap delivers an 8.3% increase in rear downforce at 200 km/h, resulting in greater high-speed stability, enhanced grip, and improved aerodynamic balance — without adding drag.
This subtle yet powerful upgrade enhances the sporty profile of the GT4 RS’s standard rear wing, giving it a more aggressive track-ready appearance while delivering measurable aerodynamic gains.
What Does a Mini Gurney Flap
Do?
A gurney flap is a small aerodynamic tab mounted along the
trailing edge of a wing. Though compact, it plays a vital role in increasing
downforce by modifying airflow and pressure distribution over the rear
wing.
Core Functions:
- Increases rear downforce by energising airflow over the wing surface.
- Improves high-speed stability and cornering control.
- Enhances braking performance by maintaining rear-end grip.
- Balances aerodynamic load, ensuring predictable handling at speed.
The SilverRocket Mini Gurney Flap is designed to complement Porsche’s GT aerodynamics, adding measurable aerodynamic benefit with race-inspired precision.
Why Do Standard or Aftermarket Gurney Flaps Fail?
Over time, lower-grade or poorly designed gurney flaps can
lose structural integrity and aerodynamic precision. Common causes of failure
include:
- Material
fatigue from constant aerodynamic load.
- UV
or heat damage causing warping or delamination.
- Weak
mounting surfaces leading to vibration or instability.
- Poor aerodynamic profiling that increases drag rather than reducing it.
The SilverRocket Mini Gurney Flap overcomes these issues through motorsport-grade carbon fibre construction, precision machining, and a heat-resistant resin system, guaranteeing durability and consistent aerodynamic performance.
Why Upgrade to SilverRocket’s Dry Carbon Mini Gurney Flap?
Upgrading to SilverRocket’s dry carbon gurney flap offers both functional and aesthetic advantages, elevating the aerodynamic sophistication of your Porsche 718 GT4 RS.
Key Benefits:
- +8.3%
rear downforce at 200 km/h when paired with DRS-1 endplates.
- Aerospace-grade
dry carbon fibre construction — ultra-light yet incredibly strong.
- Motorsport-tested
aerodynamic efficiency, ensuring improved stability and traction.
- CFD-optimised
shape for drag-free aerodynamic gains.
- UV
and heat-resistant finish for lasting durability.
- Enhanced
styling that sharpens the GT4 RS’s rear wing profile.
- Direct-fit installation for a seamless upgrade to the standard rear wing.
This upgrade combines cutting-edge aerodynamics with refined design — ideal for Porsche enthusiasts seeking track-proven performance and authentic GT styling.
Highlights:
Unique
SilverRocket Mini Gurney Flap enhances the sporty appearance of the
GT4 RS rear wing.
When
paired with DRS-1 endplates, delivers 8.3% higher rear downforce
at 200 km/h.
Improves
high-speed stability and cornering confidence.
Constructed
from lightweight, high-strength dry carbon fibre for optimal
performance.
UV-
and heat-resistant coating ensures long-term durability.
CFD-tested
for aerodynamic accuracy and track-verified results.
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche Cayman GT4 RS Clubsport 2020-2024
SilverRocket Dry Carbon Mini Gurney Flap & DRS-1 Rear
Wing Endplate Kit – Aerodynamic Precision for Porsche 718 GT4 RS
The SilverRocket Dry Carbon Mini Gurney Flap & DRS-1
Rear Wing Endplate Kit elevates Porsche 718 GT4 RS aerodynamics to true
motorsport standards. Designed for maximum performance and refined style, this
lightweight kit combines aerospace-grade dry carbon fibre construction
with CFD-optimised design to improve high-speed stability and downforce
efficiency.
Fits:
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
- Porsche Cayman GT4 RS Clubsport
2020-2024
The Mini Gurney Flap enhances the rear wing’s aerodynamic profile, while the DRS-1 Endplates streamline airflow across the wing edges, reducing turbulence and drag. Together, these upgrades deliver an 8.3 % increase in rear downforce at 200 km/h, ensuring superior rear-axle stability, sharper cornering, and enhanced driver confidence — both on road and track.
What Do They Do?
The kit’s components perform complementary aerodynamic functions:
Mini Gurney Flap
- Generates
additional downforce by energising airflow over the wing.
- Improves
high-speed balance and cornering stability.
- Increases aerodynamic grip without adding drag.
DRS-1 Endplates
- Control
lateral airflow to minimise pressure loss and turbulence.
- Enhance
downforce consistency across the entire wing span.
- Improve top-speed efficiency by reducing aerodynamic drag.
Why Standard Wing Components Fail
Typical plastic or composite rear-wing components degrade
under heat and aerodynamic load. Failures often occur due to:
- Material
fatigue or flexing during sustained high-speed use.
- Heat
deformation and UV-related cracking.
- Weak
structural bonding that causes vibration and air leakage.
- Inefficient geometry that disturbs airflow and reduces stability.
The SilverRocket kit overcomes these flaws using motorsport-grade carbon fibre layered with advanced resin bonding and a high-temperature resistant finish — guaranteeing strength, precision, and longevity even in demanding track conditions.
Why Upgrade to SilverRocket Carbon Aerodynamics
Replacing standard components with the SilverRocket kit offers quantifiable gains in both performance and aesthetics.
Key Benefits:
- +8.3
% rear downforce at 200 km/h for unmatched stability.
- 50
% lighter than standard alternatives, improving handling response.
- Aerospace-grade
dry carbon fibre ensures superior stiffness-to-weight ratio.
- CFD-validated
aerodynamic design reduces drag and enhances efficiency.
- UV
and heat-resistant finish ensures long-term durability.
- Perfect
fitment with manufacturer-quality alignment and mounting.
- Aggressive motorsport styling, highlighting the GT4 RS’s race-bred character.
Highlights
- Unique
SilverRocket Mini Gurney Flap enhances the GT4 RS wing’s sporty
aesthetic.
Combined with - Combined
with DRS-1 Endplates, delivers +8.3 % rear downforce at 200 km/h.
- Dry
carbon fibre construction is 50 % lighter than standard
plastic.
- CFD-tested
aerodynamic geometry ensures measurable performance gains.
- Motorsport-grade
materials withstand extreme track conditions.
- Improves high-speed stability, cornering control, and rear-end balance.
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9GT827867A
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This kit is comprised of the following items:
