Does the GiroDisc STO Rear Iron Rotor Conversion keep the factory calipers?

Yes. GiroDisc designed the GiroDisc STO Rear Iron Rotor Conversion as a direct replacement for the carbon ceramic rear rotors, and it uses the factory Huracan STO calipers. Contact Bulletproof Automotive before ordering so the complete conversion parts list can be confirmed.

What is the minimum thickness for the STO rear rings?

GiroDisc recommends replacing these rear rings at 26mm. They should also be replaced if a crack leads to the edge of the ring, whatever the remaining thickness. The minimum figure is marked on the hat and ring edge for easy checks in the paddock.

How many vanes does each STO rear ring have?

Forty-eight curved vanes. They act as a centrifugal pump, pulling air in through the hub and pushing it out through the disc, which helps the rotor keep its temperature under control during long sessions on a fast circuit in summer heat.

Where are the STO hats, rings and drive pins made?

GiroDisc manufactures all three in-house at its facility in Bellingham, Washington, from domestically sourced materials. The hat is 6061-T6 aluminum with a black anodized finish, and the drive pins are high-strength alloy steel with cadmium plating for corrosion resistance. Every major part is therefore produced under one roof.

Will a floating rear rotor be noisy on the street?

No. GiroDisc assembles these rotors with spring clips and Belleville washers, which give the ring race-ready float while keeping the hardware from rattling. The result is a rotor that behaves on the road as well as it does on the track.

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Description

GiroDisc STO Rear Iron Rotor Conversion for Lamborghini Huracan

GiroDisc’s STO Rear Iron Rotor Conversion replaces the carbon ceramic rear discs of a Lamborghini Huracan STO with fully floating two-piece iron rotors that work with the factory calipers. Each ring is machined from a proprietary high-carbon iron casting with 48 curved vanes, and the black-anodized 6061-T6 aluminum hat, ring and drive pins are all made in-house in Bellingham, Washington, from domestically sourced materials. Spring clips and Belleville washers give race-ready float without street noise. It is aimed at the STO owner who laps the car often and wants rear rotors that are serviced by changing rings.

Design and Performance

The 48 curved vanes act as a centrifugal pump, pulling air in through the hub to cool the rotors under hard use. GiroDisc formulates the high-carbon iron to its own specification for durability, and the drive pins are high-strength alloy steel with cadmium plating against corrosion. Spring clips and Belleville washers hold the float in check, so the assembly stays quiet on the road between sessions.

Features

Direct replacement for the factory carbon ceramic rear rotors
Works with the factory Huracan STO calipers
48 curved vanes in a proprietary high-carbon iron ring
Black-anodized 6061-T6 aluminum hat
Hats, rings and drive pins made in-house in Bellingham, Washington
Spring clips and Belleville washers for float without noise

What’s Included

Rear rotor assemblies (L/R)

Applications

Lamborghini Huracan STO with carbon ceramic brakes: 5.2L V10

Notes

The GiroDisc STO Rear Iron Rotor Conversion is designed for cars delivered with factory carbon ceramic brakes
Contact Bulletproof Automotive before ordering to confirm the full parts list for the conversion
Worn rings are renewed with the GiroDisc Huracan STO rear replacement rings, which bolt to these hats
The front axle takes the GiroDisc Huracan STO front iron rotor conversion
Stock photography may not depict the actual product

Frequently Asked Questions

Does the GiroDisc STO Rear Iron Rotor Conversion keep the factory calipers? Yes. GiroDisc designed the GiroDisc STO Rear Iron Rotor Conversion as a direct replacement for the carbon ceramic rear rotors, and it uses the factory Huracan STO calipers. Contact Bulletproof Automotive before ordering so the complete conversion parts list can be confirmed.
What is the minimum thickness for the STO rear rings? GiroDisc recommends replacing these rear rings at 26mm. They should also be replaced if a crack leads to the edge of the ring, whatever the remaining thickness. The minimum figure is marked on the hat and ring edge for easy checks in the paddock.
How many vanes does each STO rear ring have? Forty-eight curved vanes. They act as a centrifugal pump, pulling air in through the hub and pushing it out through the disc, which helps the rotor keep its temperature under control during long sessions on a fast circuit in summer heat.
Where are the STO hats, rings and drive pins made? GiroDisc manufactures all three in-house at its facility in Bellingham, Washington, from domestically sourced materials. The hat is 6061-T6 aluminum with a black anodized finish, and the drive pins are high-strength alloy steel with cadmium plating for corrosion resistance. Every major part is therefore produced under one roof.
Will a floating rear rotor be noisy on the street? No. GiroDisc assembles these rotors with spring clips and Belleville washers, which give the ring race-ready float while keeping the hardware from rattling. The result is a rotor that behaves on the road as well as it does on the track.

About GiroDisc

GiroDisc designs, manufactures, and sells 2-piece, fully floating brake rotors for a wide range of performance vehicles. Every major component, including the hats, rotor rings, and drive pins, is manufactured in-house at their facility in Bellingham, Washington, from domestically sourced materials. GiroDisc rotors use a proprietary high-carbon iron ring formulated for superior metallurgy and thermal performance, paired with reusable machined-aluminum hats that reduce the long-term cost of maintaining a high-performance brake system. The 2-piece floating design sheds unsprung and rotating mass while remaining street-friendly, delivering race-proven braking for track and street use alike.

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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GiroDisc STO Rear Iron Rotor Conversion for Lamborghini Huracan [A2-302]

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GiroDisc STO Rear Iron Rotor Conversion for Lamborghini Huracan

Design and Performance

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews