Which vehicles need the GiroDisc Quadrifoglio Front Iron Rotor Conversion?

The GiroDisc Quadrifoglio Front Iron Rotor Conversion is for Giulia and Stelvio Quadrifoglio models built with carbon-ceramic front brakes. It replaces the ceramic discs with two-piece iron rotors. Cars that left the factory with iron brakes use a separate GiroDisc front rotor.

Why convert from carbon-ceramic to iron?

Carbon-ceramic discs are costly to replace when track use wears them out. Iron rings on reusable aluminum hats are far cheaper to renew and give consistent behavior on track, which suits owners who drive their Quadrifoglio hard and often. The hats are reused.

Should the conversion be confirmed before ordering?

Yes. Carbon-ceramic Quadrifoglio cars vary in specification, so Bulletproof Automotive checks the complete conversion parts list against the vehicle before the order ships. That check covers the rotors, the rear axle companion and any hardware, and it avoids a car arriving at the shop with an incomplete set of parts.

Why is the iron ring narrower than the ceramic disc?

GiroDisc states that an iron rotor with the same swept area as the factory carbon-ceramic disc would be far too heavy. Narrowing the ring keeps the weight at a sensible level while still giving the caliper a full friction surface to work on.

Do the factory calipers stay on the vehicle?

Yes. The conversion bolts to the hub in place of the ceramic discs and the original calipers refit. Twelve alloy steel drive pins carry each ring on its aluminum hat, with spring washers that let it float under heat without noise.

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Description

GiroDisc Quadrifoglio Front Iron Rotor Conversion for Alfa Romeo Giulia and Stelvio

GiroDisc’s Quadrifoglio Front Iron Rotor Conversion replaces the factory carbon-ceramic front discs on the Alfa Romeo Giulia and Stelvio Quadrifoglio with two-piece floating iron rotors. Carbon-ceramic discs are expensive to replace once worn by track use; iron rings on reusable aluminum hats are not. GiroDisc kept the iron ring narrower than the factory ceramic disc on purpose, since matching its swept area would have made the rotor far too heavy. It is the conversion for owners who want to use their Quadrifoglio hard without ceramic replacement bills.

Fitment and Installation

The rotors bolt on in place of the factory carbon-ceramic discs and keep the original calipers. Bulletproof Automotive confirms the complete conversion parts list with every order. Twelve cadmium-plated alloy steel drive pins carry each ring.

Features

Iron conversion for factory carbon-ceramic front brakes
Ring sized to keep rotor weight reasonable
12 cadmium-plated alloy steel drive pins
US-sourced 6061-T6 aluminum hat
Curved-vane iron ring poured in the USA
Works with the factory calipers

What’s Included

Front rotor assemblies (L/R)

Applications

Alfa Romeo Giulia Quadrifoglio: with factory carbon-ceramic brakes | 2.9L twin-turbo V6
Alfa Romeo Stelvio Quadrifoglio: with factory carbon-ceramic brakes | 2.9L twin-turbo V6

Notes

The Quadrifoglio Front Iron Rotor Conversion is for vehicles with factory carbon-ceramic brakes; iron-braked vehicles use a different GiroDisc rotor
Contact Bulletproof Automotive to confirm the complete conversion parts list before ordering
The GiroDisc Quadrifoglio rear iron rotor conversion completes the set
Cap screws are never tightened beyond 60 in-lb (7 Nm)
Stock photography may not depict the actual product

Frequently Asked Questions

Which vehicles need the GiroDisc Quadrifoglio Front Iron Rotor Conversion? The GiroDisc Quadrifoglio Front Iron Rotor Conversion is for Giulia and Stelvio Quadrifoglio models built with carbon-ceramic front brakes. It replaces the ceramic discs with two-piece iron rotors. Cars that left the factory with iron brakes use a separate GiroDisc front rotor.
Why convert from carbon-ceramic to iron? Carbon-ceramic discs are costly to replace when track use wears them out. Iron rings on reusable aluminum hats are far cheaper to renew and give consistent behavior on track, which suits owners who drive their Quadrifoglio hard and often. The hats are reused.
Should the conversion be confirmed before ordering? Yes. Carbon-ceramic Quadrifoglio cars vary in specification, so Bulletproof Automotive checks the complete conversion parts list against the vehicle before the order ships. That check covers the rotors, the rear axle companion and any hardware, and it avoids a car arriving at the shop with an incomplete set of parts.
Why is the iron ring narrower than the ceramic disc? GiroDisc states that an iron rotor with the same swept area as the factory carbon-ceramic disc would be far too heavy. Narrowing the ring keeps the weight at a sensible level while still giving the caliper a full friction surface to work on.
Do the factory calipers stay on the vehicle? Yes. The conversion bolts to the hub in place of the ceramic discs and the original calipers refit. Twelve alloy steel drive pins carry each ring on its aluminum hat, with spring washers that let it float under heat without noise.

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 Quadrifoglio Front Iron Rotor Conversion for Alfa Romeo Giulia and Stelvio [A1-209]

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GiroDisc Quadrifoglio Front Iron Rotor Conversion for Alfa Romeo Giulia and Stelvio

Fitment and Installation

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

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