Does the GiroDisc Challenge Front Iron Rotor Conversion need caliper changes on a Challenge car?

No. The Challenge Front Iron Rotor Conversion is designed around the factory calipers on the 458 Challenge and 488 Challenge, and GiroDisc states that no modifications are needed apart from changing the rotors themselves. Brackets and hydraulics stay as Ferrari delivered them.

What are the key dimensions of the 458 Challenge front iron rotor?

GiroDisc lists a 398mm outer diameter, a 36mm thickness and a 34mm minimum thickness, with 72 curved vanes inside the ring. Each complete front rotor assembly weighs about 30 lb according to GiroDisc, and the rotors are sold as a left and right pair.

Why would a race team move from carbon ceramic to iron?

Iron rings cost far less to renew than carbon-ceramic discs, and the wear rate is easy to track by measuring thickness. With the two-piece GiroDisc layout only the rings are replaced at service, while the aluminum hats remain in use for season after season.

Which ring part number fits these front hats?

The matching replacement rings are GiroDisc part D1-183. They are sold in pairs with new hardware and bolt to the existing hats. Replace them at 34mm or sooner if a crack runs to the edge of the ring, and keep the cap screws at or below 60 in-lb.

How does the floating mount handle race temperatures?

The iron ring expands with heat while the drive pins hold it centered on the hat, so it does not distort the way a solid disc can. Spring clips and washers maintain that float yet keep the assembly from rattling when it cools in the pits.

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Description

GiroDisc Challenge Front Iron Rotor Conversion for Ferrari 458 and 488

GiroDisc’s Challenge Front Iron Rotor Conversion for the Ferrari 458 and 488 replaces the factory carbon-ceramic front discs on these one-make race cars with 398mm two-piece iron rotors. Each ring is 36mm thick, carries 72 curved vanes and is cast from GiroDisc’s own high-carbon iron, then floated on a 6061-T6 aluminum hat finished in type 3 clear anodize. Iron is cheaper to renew than carbon ceramic and its wear is easy to measure, which matters over a long season. For a Challenge car that lives on track, this is the practical front brake.

Design and Performance

GiroDisc builds the conversion to work with the factory calipers, and it needs no modifications beyond the rotor change itself. Curved vanes pump air from the hub out through the ring, while spring clips and spring washers give the float a race car needs without loose hardware noise in the paddock. When the rings wear to 34mm, new D1-183 rings bolt to the same hats.

Features

398mm outer diameter and 36mm thickness
72 curved vanes for high airflow under sustained braking
Hat machined from 6061-T6 aluminum with a type 3 clear anodize
Cadmium-plated high-strength steel drive pins made in-house
Hats, rings and pins all produced in Bellingham, Washington

Specifications

Outer diameter: 398mm
Thickness: 36mm
Minimum thickness: 34mm
Weight: About 30 lb per rotor assembly
Vane count: 72 curved
Replacement rings: D1-183

What’s Included

Front rotor assemblies (L/R)

Applications

Ferrari 458 Challenge: Factory race car with carbon-ceramic front brakes
Ferrari 488 Challenge: Factory race car with carbon-ceramic front brakes

Notes

The Challenge Front Iron Rotor Conversion is made for the 458 Challenge and 488 Challenge race cars only
Worn rings are replaced with the GiroDisc 458 and 488 Challenge front replacement rings, which reuse these hats
The rear axle is converted with the GiroDisc 458 and 488 Challenge rear iron rotor conversion
Stock photography may not depict the actual product

Frequently Asked Questions

Does the GiroDisc Challenge Front Iron Rotor Conversion need caliper changes on a Challenge car? No. The Challenge Front Iron Rotor Conversion is designed around the factory calipers on the 458 Challenge and 488 Challenge, and GiroDisc states that no modifications are needed apart from changing the rotors themselves. Brackets and hydraulics stay as Ferrari delivered them.
What are the key dimensions of the 458 Challenge front iron rotor? GiroDisc lists a 398mm outer diameter, a 36mm thickness and a 34mm minimum thickness, with 72 curved vanes inside the ring. Each complete front rotor assembly weighs about 30 lb according to GiroDisc, and the rotors are sold as a left and right pair.
Why would a race team move from carbon ceramic to iron? Iron rings cost far less to renew than carbon-ceramic discs, and the wear rate is easy to track by measuring thickness. With the two-piece GiroDisc layout only the rings are replaced at service, while the aluminum hats remain in use for season after season.
Which ring part number fits these front hats? The matching replacement rings are GiroDisc part D1-183. They are sold in pairs with new hardware and bolt to the existing hats. Replace them at 34mm or sooner if a crack runs to the edge of the ring, and keep the cap screws at or below 60 in-lb.
How does the floating mount handle race temperatures? The iron ring expands with heat while the drive pins hold it centered on the hat, so it does not distort the way a solid disc can. Spring clips and washers maintain that float yet keep the assembly from rattling when it cools in the pits.

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 Challenge Front Iron Rotor Conversion for Ferrari 458 and 488 [A1-183]

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GiroDisc Challenge Front Iron Rotor Conversion for Ferrari 458 and 488

Design and Performance

Features

Specifications

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews