Which vehicles take the GiroDisc Front Rotors for Alfa Romeo Quadrifoglio models?

The GiroDisc Front Rotors for Alfa Romeo listed here fit the Giulia Quadrifoglio and the Stelvio Quadrifoglio with iron front brakes. Vehicles that left the factory with carbon-ceramic brakes need the separate GiroDisc A1-209 iron conversion, so check which brakes the car has before ordering.

Do the Quadrifoglio front calipers stay on the vehicle?

Yes. GiroDisc builds this rotor as a direct replacement for the factory disc, so the original Quadrifoglio calipers refit without modification. Keeping the stock diameter and calipers means the brake bias and ABS calibration that Alfa developed stay as they were.

What size are the GiroDisc front rotors for the Giulia Quadrifoglio?

They measure 360mm across, the diameter GiroDisc lists for the matching D1-224 front replacement rings. The iron ring floats on a 6061-T6 aluminum hat through 12 cadmium-plated alloy steel drive pins secured by class 12.9 cap screws, so the hat stays with the vehicle for good.

Which part renews the Quadrifoglio front rings once they wear?

The GiroDisc D1-224 front replacement rings. They come as a pair with new hardware and bolt to the aluminum hats already on the vehicle. Replace them at the minimum thickness marked on the hat and ring edge, or straight away if a crack reaches the outer edge.

How should the Quadrifoglio front rotors be broken in?

GiroDisc recommends a bed-in procedure for every new disc. Bed the rotors in with a sequence of moderate to firm stops from speed, then drive gently to let them cool, before taking the Giulia or Stelvio onto a track or a demanding mountain road.

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Description

GiroDisc Front Rotors for Alfa Romeo Giulia and Stelvio Quadrifoglio

GiroDisc’s Front Rotors for Alfa Romeo Giulia and Stelvio Quadrifoglio replace the iron front discs on the 2.9-liter twin-turbo cars with a 360mm two-piece floating assembly, bolting on with no modifications and working with the factory calipers. It suits the Quadrifoglio owner who drives the way Alfa intended and wants front brakes that can be renewed one ring at a time. Twelve drive pins tie each cast iron ring to a 6061-T6 aluminum hat.

Bolt-On and Go

No machining, spacers or new brackets are involved: the Front Rotors for Alfa Romeo Quadrifoglio models mount to the hub like the originals and the stock calipers refit as they came off. Because diameter and caliper stay the same, brake balance and ABS behavior are unchanged. Spring washers on the pins keep the floating ring quiet when cold.

Features

360mm two-piece floating construction
Direct replacement with no modifications
Works with the factory Quadrifoglio front calipers
12 cadmium-plated alloy steel drive pins
Curved vanes that act as a centrifugal air pump
Class 12.9 cap screws with hardened washers

What’s Included

Front rotor assemblies (L/R)

Applications

Alfa Romeo Giulia Quadrifoglio: 2.9L twin-turbo V6
Alfa Romeo Stelvio Quadrifoglio: 2.9L twin-turbo V6

Notes

These rotors replace iron front discs; vehicles with factory carbon-ceramic brakes use the GiroDisc Quadrifoglio front iron conversion instead
Worn rings are renewed with the GiroDisc Quadrifoglio front replacement rings, which bolt to these hats
The GiroDisc Quadrifoglio rear rotors complete the set
Stock photography may not depict the actual product

Frequently Asked Questions

Which vehicles take the GiroDisc Front Rotors for Alfa Romeo Quadrifoglio models? The GiroDisc Front Rotors for Alfa Romeo listed here fit the Giulia Quadrifoglio and the Stelvio Quadrifoglio with iron front brakes. Vehicles that left the factory with carbon-ceramic brakes need the separate GiroDisc A1-209 iron conversion, so check which brakes the car has before ordering.
Do the Quadrifoglio front calipers stay on the vehicle? Yes. GiroDisc builds this rotor as a direct replacement for the factory disc, so the original Quadrifoglio calipers refit without modification. Keeping the stock diameter and calipers means the brake bias and ABS calibration that Alfa developed stay as they were.
What size are the GiroDisc front rotors for the Giulia Quadrifoglio? They measure 360mm across, the diameter GiroDisc lists for the matching D1-224 front replacement rings. The iron ring floats on a 6061-T6 aluminum hat through 12 cadmium-plated alloy steel drive pins secured by class 12.9 cap screws, so the hat stays with the vehicle for good.
Which part renews the Quadrifoglio front rings once they wear? The GiroDisc D1-224 front replacement rings. They come as a pair with new hardware and bolt to the aluminum hats already on the vehicle. Replace them at the minimum thickness marked on the hat and ring edge, or straight away if a crack reaches the outer edge.
How should the Quadrifoglio front rotors be broken in? GiroDisc recommends a bed-in procedure for every new disc. Bed the rotors in with a sequence of moderate to firm stops from speed, then drive gently to let them cool, before taking the Giulia or Stelvio onto a track or a demanding mountain road.

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 Front Rotors for Alfa Romeo Giulia and Stelvio Quadrifoglio [A1-224]

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GiroDisc Front Rotors for Alfa Romeo Giulia and Stelvio Quadrifoglio

Bolt-On and Go

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

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