Rear Spoilers / Aerofoil

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.       

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.