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Only Fits PORSCHE GT4 RS OEM Aluminum Rims
Four decades ago, Porsche introduced a significant aerodynamic innovation known as the turbofan aerodisc, or wheel fan, which remains a subject of intrigue and misunderstanding. This technology first appeared on the Porsche 917/30, a vehicle that dominated the 1973 Can-Am racing series. Widely regarded as the most powerful road racing car of its era, the 917/30 surpassed its predecessor, the 917/10, in speed, size, and weight. During initial testing at Weissach, the 917/30 generated brake temperatures exceeding 700°C (1,290°F), consuming 2.5 inches of brake material in under 300 miles.
Confronted with brake temperatures surpassing the boiling point of contemporary brake fluid, Porsche engineers faced the challenge of managing extreme heat, particularly with the car's wide wheels—15 inches at the front and 19 inches at the rear. Their solution was a set of meticulously crafted, 20-fin wheel fans, or turbofan aerodiscs. The design was straightforward yet effective: radial blades, affixed to the wheel’s outer face, rotated with the wheel to strike and compress air. This action leveraged centrifugal force to expel hot air from the brake system, enhancing cooling efficiency. As long as the wheels spun at sufficient speed, these simple air pumps continuously evacuated superheated air, mitigating the risk of brake failure and improving overall performance.
These devices are no longer utilized in contemporary racing primarily due to regulatory prohibitions enacted by governing bodies. They were classified as movable aerodynamic devices, which violated rules intended to maintain fairness and safety by restricting components that actively alter airflow during motion. Such bans were implemented across various series, including those under the Fédération Internationale de l'Automobile (FIA) and other motorsport organizations, as the turbofans provided an unintended performance advantage through dynamic air evacuation and potential downforce generation.
Although turbofan aerodisc technology is prohibited in sanctioned racing series due to regulations classifying it as a movable aerodynamic device, Porsche has strategically implemented this innovation in its non-homologated special race cars and official performance kits for GT cars. The technology significantly enhances track performance by improving brake cooling and aerodynamic efficiency, thereby optimizing vehicle handling and speed.
Utilizing state-of-the-art AI-integrated Computational Fluid Dynamics (CFD) software, SilverRocket engineers designed cutting-edge carbon fiber turbofan blades optimized for superior airflow efficiency and minimal weight.
Traditional turbofan rims, typically constructed from aluminum to withstand extreme heat, are suboptimal for maximizing weight reduction. In contrast, the SilverRocket Turbofan AeroDisc Pro utilizes aerospace-grade carbon fiber, delivering superior strength and significantly reduced weight. The innovative SilverRocket RaceReady Heat-Resistant (R-HR) Coating, applied at a 0.5mm thickness across the entire rear surface, ensures exceptional heat resistance, protecting the carbon fiber structure and enabling outstanding durability and performance in high-temperature racing conditions.
To assess the real track performance impacts of the Aerodisc Pro, SilveRocket conducts rigorous testing on racetracks, consistent with its established evaluation process.
After 30 minutes of intense track driving by a professional driver on a day with ambient temperatures of 40°C (104°F), the left-side wheels equipped with SilverRocket AeroDisc Pro covers demonstrate superior thermal performance compared to the right-side wheels with standard OEM rims. The AeroDisc Pro reduces peak brake disc temperatures from 585°C (1085°F) to 493°C (919°F), enhancing brake system efficiency and durability under extreme racing conditions.
The Porsche 718 GT4 RS, compared to the 718 GT4, incorporates fender louvers and arch cuts to extract high-pressure air from the wheel arches, thereby increasing downforce on the front axle.
Similarly, the SR Turbofan Aerodisc Pro enhances front axle downforce by accelerating the extraction of high-pressure air from the wheel arches.
Track testing demonstrates that the additional front axle downforce generated by the SR Turbofan Aerodisc Pro is equivalent to that provided by SR Clubsport dive planes. Notably, the downforce produced by the Turbofan Aerodisc Pro incurs a lower drag penalty compared to dive planes.
The SilverRocket AeroDisc Pro optimizes front wheel airflow, reducing aerodynamic drag.
Track Testing Result shows that, Combined with the rear AeroDisc, SR AeroDisc Pro increases the GT4RS's top speed by 14 km/h (8.7 mph), from 268 km/h (166.5 mph) to 282 km/h (175.2 mph), on the Shanghai F1 Circuit.
While SilverRocket engineers excel at creating solid, track-tested products, we recognize that artistry is not our forte. Therefore, we leave the AeroDisc's front surface blank, inviting you or your favorite designer to unleash your creativity on its design.
To simplify the design process, we created this Design Template:
Returns Policy
To RETURN any system, product or merchandise you must contact us first for a Return Authorization (RA) Number. Special order and custom made systems, apparel, Carbon Fiber Parts (unless defective), and other certain merchandise are NOT returnable. ALL SALES ARE FINAL. To return a Grid Racing Parts product an RA number must be requested and if granted the item(S) must be in original Grid Racing Parts sealed packaging. A copy of the original invoice and a brief explanation must accompany all returned items. You must follow our instructions for returning items carefully, or Grid Racing Parts reserves the right to charge a 30% restocking fee on any OPENED box or repackaged products. Customers are responsible for return shipping charges. If an order was shipped with a promotional “Free Shipping”, and the order is returned, we exclusively reserve the right to charge the customer or distributor for the cost of that original shipping and handling. If a Grid Racing Parts Performance package is ordered, and an individual component of that package is returned, Grid Racing Parts reserves the right to charge back the performance package discount along with any additionally offered discounts. Return shipped items DAMAGED in transit will RESULT in additional charges up to and including rejection of the competent. It is the customer’s responsibility to ship safely and properly. No returns accepted after 30 days from the invoice date. No credits will be given after 30 days from the invoice date.
To qualify for return, the product must be unused and remain in the original packaging, as well as match the current design and packaging for the product at the time of return. Sounds is subjective and therefore does not qualify for a return of a used product. See Sound Solution Guarantee to see if your product is covered.
Periodically mistakes are made when ordering, or a wrong part is shipped, and you may wish to return an item. We will do everything reasonable to satisfy you. Please contact Grid Racing Parts immediately via email at service@GridRacingParts.com to discuss the circumstances before returning any products. Anything returned without prior authorization from Grid Racing Parts will be refused. All returns must be sent back fully prepaid. Our customer service department (service@gridracingparts.com) will issue a Return Authorization Number, which must accompany any return. A copy of the original invoice and a brief explanation must accompany all returned items. No returns accepted after 30 days from the invoice date. No credits given after 30 days.
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Grid Racing Parts cannot be held liable for refusal of, delay of, loss of, theft or damage to a shipment of any item. The customer agrees to indemnify Grid Racing Parts for all costs, fees and expenses Grid Racing Parts incurs as a result of any violation of any local, state, federal, national or international laws or regulations. Customer agrees to take responsibility for lost packages that were not independently insured or sent without requiring signature. The customer understands they will be liable in the event of additional fees, tariffs, or legal issues such as border seizure. Customer accepts these risks and agrees to release Grid Racing Parts of all liability.
Grid Racing Parts reserves the right to charge a shipping and handling fee on every order being shipped from our facility. This fee is universal and applies to all retail and wholesale purchases and cannot be waived or credited.
A 8.25% sales tax will be implemented for every purchase made by a Texas resident. This fee will be charged for in-house installations and products purchased online, over the phone, and/or via email, this fee is required by law, is non-negotiable.
