Which Corvette is the GiroDisc ZR1 Rear Iron Rotor Conversion for?

GiroDisc lists the GiroDisc ZR1 Rear Iron Rotor Conversion for the C6 generation Corvette ZR1. It replaces the factory rear discs with a two-piece iron and aluminum assembly, sold as a pair, and is matched by a separate GiroDisc front iron conversion for the same car.

Does the ZR1 keep its factory brake bias and ABS?

Yes. Because GiroDisc upgrades the brakes with lightweight replacement discs instead of a big brake kit, the factory brake bias is maintained and the ABS keeps working as designed. The rotors bolt directly to the car and use the original calipers.

How many drive pins hold the ZR1 rear ring?

Twelve high-strength alloy steel drive pins, made by GiroDisc to its own specification and cadmium plated against corrosion. They take the braking load while allowing axial and radial float between the hat and the disc, and class 12.9 cap screws secure them.

What needs replacing after the conversion is fitted?

Only the cast iron rings, when they wear to the minimum thickness marked on the hat and ring edge or develop a crack to the edge. The replacement part for the rear is GiroDisc D2-184, sold as a pair with hardware for the existing hats.

Why choose replacement discs over a big brake kit on a ZR1?

A big brake kit changes calipers and often the brake balance. GiroDisc instead replaces only the discs with lighter two-piece assemblies, so the ZR1 keeps its factory calipers, bias and ABS behavior while gaining a disc that is serviced by changing the iron rings.

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Description

GiroDisc ZR1 Rear Iron Rotor Conversion for C6 Chevrolet Corvette

GiroDisc’s ZR1 Rear Iron Rotor Conversion lets a C6 Corvette ZR1 run two-piece iron discs at the rear in place of the factory parts. The aluminum hat is 6061-T6 aircraft-specification alloy, the curved vane disc is cast iron, and twelve alloy steel drive pins join the two. GiroDisc positions it as the alternative to a big brake kit: lighter replacement discs that keep the factory brake bias and ABS working as Chevrolet calibrated them. That makes it a natural fit for a ZR1 owner who is moving the car onto track duty.

Bolt-On and Go

No modifications are needed. The rotors bolt directly to the car and work with the factory calipers, and once the system is in place only the cast iron ring is replaced when it wears. Class 12.9 cap screws with hardened washers secure the drive pins.

Features

Twelve cadmium-plated high-strength alloy steel drive pins
Class 12.9 cap screws with hardened washers
Anti-noise spring washers that stop cold rattle
Curved vane iron disc that pumps cooling air through
6061-T6 aircraft-specification aluminum hat
Factory brake bias and ABS retained

What’s Included

Rear rotor assemblies (L/R)

Applications

Chevrolet Corvette ZR1: C6 | 6.2L supercharged LS9 V8

Notes

The GiroDisc ZR1 Rear Iron Rotor Conversion is sold and priced as a pair for the rear axle
Worn rings are renewed with the GiroDisc C6 ZR1 rear replacement rings
At the front, the GiroDisc C6 ZR1 and C7 Z07 front iron rotor conversion completes the car
Stock photography may not depict the actual product

Frequently Asked Questions

Which Corvette is the GiroDisc ZR1 Rear Iron Rotor Conversion for? GiroDisc lists the GiroDisc ZR1 Rear Iron Rotor Conversion for the C6 generation Corvette ZR1. It replaces the factory rear discs with a two-piece iron and aluminum assembly, sold as a pair, and is matched by a separate GiroDisc front iron conversion for the same car.
Does the ZR1 keep its factory brake bias and ABS? Yes. Because GiroDisc upgrades the brakes with lightweight replacement discs instead of a big brake kit, the factory brake bias is maintained and the ABS keeps working as designed. The rotors bolt directly to the car and use the original calipers.
How many drive pins hold the ZR1 rear ring? Twelve high-strength alloy steel drive pins, made by GiroDisc to its own specification and cadmium plated against corrosion. They take the braking load while allowing axial and radial float between the hat and the disc, and class 12.9 cap screws secure them.
What needs replacing after the conversion is fitted? Only the cast iron rings, when they wear to the minimum thickness marked on the hat and ring edge or develop a crack to the edge. The replacement part for the rear is GiroDisc D2-184, sold as a pair with hardware for the existing hats.
Why choose replacement discs over a big brake kit on a ZR1? A big brake kit changes calipers and often the brake balance. GiroDisc instead replaces only the discs with lighter two-piece assemblies, so the ZR1 keeps its factory calipers, bias and ABS behavior while gaining a disc that is serviced by changing the iron rings.

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 ZR1 Rear Iron Rotor Conversion for C6 Chevrolet Corvette [A2-184]

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GiroDisc ZR1 Rear Iron Rotor Conversion for C6 Chevrolet Corvette

Bolt-On and Go

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews