What are the new and minimum thickness figures for these rings?

GiroDisc lists 32mm when new and a 30mm minimum thickness for this 390mm ring. Measure the rings after each event and replace the pair at 30mm, or sooner if a crack forms that reaches the outer edge of either ring.

How many rings come in a Challenge Evo rear set?

Two rings, one per rear corner, supplied together with the replacement mounting hardware. GiroDisc sells and prices them as a pair so both sides start from the same thickness, and the existing GiroDisc hats are the only parts reused from the car.

Why carry spare ring sets for a Challenge season?

Ring sets are lighter and less costly to keep in the truck than complete rotors, and they bolt to the hats already on the car. A team can swap iron between events without waiting on new assemblies, which keeps the car on track through a busy calendar.

Do the 296 Challenge rear rings need bedding?

Yes. GiroDisc recommends a bed-in procedure for every new disc, and that applies to fresh rings fitted to existing hats. Bed the rotors in during an early practice run so the new iron surface is prepared before qualifying and the race.

Description

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BP PRICING DIFFERENCE

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Description

GiroDisc Challenge Evo Rear Replacement Rings for Ferrari 296 and 488

GiroDisc’s Challenge Evo Rear Replacement Rings renew the iron on the GiroDisc A2-285 rear conversion for the Ferrari 296 Challenge and the 488 Challenge with the Evo rear brake upgrade. Each ring is 390mm across and 32mm thick when new, with 72 curved vanes, machined from GiroDisc’s proprietary high-carbon iron casting in Bellingham, Washington. Sold as a pair with replacement hardware, they let a team keep its hats in service while only the consumable iron is changed.

Fitment and Installation

The rings fit GiroDisc hats only and are not designed for factory hats or other brands. Each worn ring comes off its hat on the bench, the new ring is fitted with the supplied hardware, and the assembly returns to its marked side of the car. GiroDisc recommends replacement at the 30mm minimum thickness or if a crack reaches the ring edge.

Features

390mm outer diameter and 32mm thickness when new
30mm minimum thickness, per GiroDisc
72 curved vanes that pull air in through the hub
Machined from GiroDisc high-carbon iron castings
Made in-house in Bellingham, Washington
Pair supplied with replacement mounting hardware

What’s Included

Rear replacement rings (L/R)
Replacement mounting hardware

Applications

Ferrari 296 Challenge: factory race car | 3.0L twin-turbo V6
Ferrari 488 Challenge: with Evo rear brake upgrade | 3.9L twin-turbo V8

Notes

These rings fit the hats of the GiroDisc 296 and 488 Challenge Evo rear rotors only, and hats are not included
The Challenge Evo Rear Replacement Rings do not fit factory hats or other brands of two-piece rotor
They suit the 296 Challenge and 488 Challenge cars with the Evo rear brake upgrade
Stock photography may not depict the actual product

Frequently Asked Questions

What hats take the GiroDisc Challenge Evo Rear Replacement Rings? The GiroDisc Challenge Evo Rear Replacement Rings bolt to the hats of the GiroDisc A2-285 rear iron conversion for the Ferrari 296 Challenge and the Evo equipped 488 Challenge. They are not made for factory hats or two piece rotors from other brands.
What are the new and minimum thickness figures for these rings? GiroDisc lists 32mm when new and a 30mm minimum thickness for this 390mm ring. Measure the rings after each event and replace the pair at 30mm, or sooner if a crack forms that reaches the outer edge of either ring.
How many rings come in a Challenge Evo rear set? Two rings, one per rear corner, supplied together with the replacement mounting hardware. GiroDisc sells and prices them as a pair so both sides start from the same thickness, and the existing GiroDisc hats are the only parts reused from the car.
Why carry spare ring sets for a Challenge season? Ring sets are lighter and less costly to keep in the truck than complete rotors, and they bolt to the hats already on the car. A team can swap iron between events without waiting on new assemblies, which keeps the car on track through a busy calendar.
Do the 296 Challenge rear rings need bedding? Yes. GiroDisc recommends a bed-in procedure for every new disc, and that applies to fresh rings fitted to existing hats. Bed the rotors in during an early practice run so the new iron surface is prepared before qualifying and the race.

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 Evo Rear Replacement Rings for Ferrari 296 and 488 [D2-285]

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GiroDisc Challenge Evo Rear Replacement Rings for Ferrari 296 and 488

Fitment and Installation

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews