Do the GiroDisc Rear Rotors for Ferrari 355 Challenge cars need modifications?

No. GiroDisc lists the GiroDisc Rear Rotors for Ferrari 355 Challenge cars as a direct replacement for the factory disc. They bolt to the hub with no modifications and work with the original calipers, so the rear brake setup of the car is otherwise unchanged.

Will these rear rotors fit a road-going F355?

No. GiroDisc lists this part for the 355 Challenge only. For road F355 owners, GiroDisc offers the A1-002 front rotor for the 348 and F355, and Bulletproof Automotive can help confirm the right rear option for a road car before anything is ordered.

Is there a matching GiroDisc front rotor for the 355 Challenge?

Yes. GiroDisc lists the A1-054 front rotor for the 355 Challenge. Fitting both axles puts the car on GiroDisc floating rotors all round, with reusable aluminum hats and iron rings that are renewed as they wear down to minimum thickness.

How does the curved vane design help a race car?

The vanes inside each ring are curved so that, as the wheel turns, they act like a centrifugal pump, drawing air in at the hub and forcing it out through the disc. GiroDisc developed the design in racing to carry heat away during repeated hard braking.

Why do the cap screws look loose on a new rotor?

The ring is meant to float on the hat, so the drive pin cap screws are fitted to a light torque and never tightened beyond 60 in-lb, or 7 Nm. Some visible play is normal and allows the ring to expand with heat without stressing the hat.

Description

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BP PRICING DIFFERENCE

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Description

GiroDisc Rear Rotors for Ferrari 355 Challenge

GiroDisc’s Rear Rotors for Ferrari 355 Challenge race cars replace the factory rear discs with a two-piece floating rotor that GiroDisc lists as a direct replacement, bolting on with no modifications and working with the original calipers. The ring is cast from GiroDisc’s proprietary iron, poured in the USA and machined in Bellingham, Washington. For a 355 Challenge still raced in historic or club events, it is a current-production rear rotor with reusable hats from a maker that still supports the car.

Bolt-On and Go

The rotor mounts to the hub in place of the stock disc and the factory caliper goes straight back over it. Ten cadmium-plated alloy steel drive pins, built by GiroDisc in the USA, let the ring float axially and radially, while class 12.9 cap screws and hardened washers hold the pins. Spring washers keep the ring from rattling when cold.

Features

Direct replacement for the 355 Challenge rear disc
Original calipers retained, no modifications
US-sourced 6061-T6 aluminum hat
Proprietary iron ring poured in the USA
Curved vanes that pump air out through the disc
Slotted face that keeps the friction surface clean

What’s Included

Rear rotor assemblies (L/R)

Applications

Ferrari 355 Challenge: 3.5L V8

Notes

The Rear Rotors for Ferrari 355 Challenge cars bolt on with the factory calipers
The GiroDisc 355 Challenge front rotors complete the set
GiroDisc does not list a separate rear ring set for this part, so contact Bulletproof Automotive when the rings reach minimum thickness
Cap screws are never tightened beyond 60 in-lb, or 7 Nm
Stock photography may not depict the actual product

Frequently Asked Questions

Do the GiroDisc Rear Rotors for Ferrari 355 Challenge cars need modifications? No. GiroDisc lists the GiroDisc Rear Rotors for Ferrari 355 Challenge cars as a direct replacement for the factory disc. They bolt to the hub with no modifications and work with the original calipers, so the rear brake setup of the car is otherwise unchanged.
Will these rear rotors fit a road-going F355? No. GiroDisc lists this part for the 355 Challenge only. For road F355 owners, GiroDisc offers the A1-002 front rotor for the 348 and F355, and Bulletproof Automotive can help confirm the right rear option for a road car before anything is ordered.
Is there a matching GiroDisc front rotor for the 355 Challenge? Yes. GiroDisc lists the A1-054 front rotor for the 355 Challenge. Fitting both axles puts the car on GiroDisc floating rotors all round, with reusable aluminum hats and iron rings that are renewed as they wear down to minimum thickness.
How does the curved vane design help a race car? The vanes inside each ring are curved so that, as the wheel turns, they act like a centrifugal pump, drawing air in at the hub and forcing it out through the disc. GiroDisc developed the design in racing to carry heat away during repeated hard braking.
Why do the cap screws look loose on a new rotor? The ring is meant to float on the hat, so the drive pin cap screws are fitted to a light torque and never tightened beyond 60 in-lb, or 7 Nm. Some visible play is normal and allows the ring to expand with heat without stressing the hat.

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 Rear Rotors for Ferrari 355 Challenge [A2-054]

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GiroDisc Rear Rotors for Ferrari 355 Challenge

Bolt-On and Go

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews