Name: GiroDisc 350mm Slotted Front Brake Rotors with Spacers for 991.1 Porsche 911 Carrera 4S / GTS / S [A1-122]
Brand: GiroDisc
SKU: A1-122
Price: 1350.00 USD
Availability: InStock

Description

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BP PRICING DIFFERENCE

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Description

GiroDisc 350mm Slotted Front Brake Rotors with Spacers for 991.1 Porsche 911 Carrera 4S / GTS / S [A1-122]

The GiroDisc system serves as a direct replacement for the OEM disc, enhanced by the inclusion of provided caliper spacers. The GiroDisc rotor offers an upgraded size of 350mm compared to the OEM’s 340mm, delivering improved braking force and enhanced cooling capacity. Weighing approximately 21.0lbs., GiroDisc front rotors are lighter than the stock units at 24.4lbs., reducing rotational and unsprung weight for quicker acceleration and improved suspension response. The central hat section is constructed from U.S.-sourced 6061-T6 aircraft-grade aluminum, ensuring exceptional durability. The disc itself is crafted from GiroDisc’s proprietary cast iron, poured domestically and precision-machined entirely in-house. A curved vane design, inspired by racing technology, acts as a centrifugal pump to channel cooling air efficiently through the disc. The rotor and hat are connected using a floating mount system with 10 high-strength alloy steel drive pins, also manufactured in-house to proprietary specifications. These pins, cadmium-plated for long-lasting corrosion resistance, handle the braking load while preserving axial and radial float between the hat and disc. Secured by class 12.9 cap screws and hardened washers, the system is designed for reliability and performance. To minimize noise during cold operation, the pins incorporate anti-noise spring washers on the rotor side. These washers accommodate heat expansion while preventing rattling and noise typically associated with floating rotors. The floating design also ensures the rotor self-centers between the brake pads for optimal performance.

Features

Sold / priced in pairs
350mm diameter
Direct replacement for OEM disc (no modifications necessary)
Between 4-8lbs lighter than OEM
Slotted rotors for maximum friction surface
Improved overall performance

Specifications

Diameter: 350mm
Weight: Approx. 21lbs
Quantity: 2

Applications

Porsche 911 Carrera 4S: 991.1 (2012-2016)
Porsche 911 Carrera GTS: 991.1 (2014-2016)
Porsche 911 Carrera S: 991.1 (2011-2016)

Notes

Images may not depict actual product

About GiroDisc

Brake rotors have long been an underappreciated component in performance car braking systems. Traditional one-piece rotors are heavy, retain heat, and reduce braking efficiency while increasing unsprung weight, which negatively impacts handling. Founded in 2003, GiroDisc set out to revolutionize this area by designing and manufacturing two-piece brake rotors engineered to perform flawlessly under extreme conditions. GiroDisc’s fully floating design utilizes tension hardware to ensure silent operation on the street while delivering track-ready performance. By focusing exclusively on this specialized niche, GiroDisc has advanced its engineering and manufacturing processes to industry-leading standards. Enthusiasts worldwide have enhanced their existing brake systems with GiroDisc rotors, often avoiding the expense and complexity of a big brake kit upgrade. Based in Bellingham, Washington, GiroDisc handles every aspect of production — from design and engineering to manufacturing and fulfillment—on site. For more information about GiroDisc products and services, please reach out directly.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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