Do the GiroDisc Rear Rotors for C5 Corvettes need extra parts?

Yes, on base cars. The GiroDisc Rear Rotors for C5 and C6 Z51 applications replace the C6 Z51 330mm rear disc directly. C5 and C6 base cars also need the Z51 rear caliper bracket, GM part number 88964167 or equivalent, which works with the existing calipers.

Which C6 cars take these rear rotors without the bracket?

C6 cars built with the Z51 package, whose 330mm rear rotor GiroDisc describes as the J55 or heavy-duty brake package size. These rotors replace that disc directly, so such a car needs no extra parts. Base C6 cars need the Z51 rear caliper bracket first.

How much does each Corvette rear rotor weigh?

GiroDisc lists each complete rear assembly at 12.4 lb. The fully floating design sheds unsprung weight and rotating mass from the rear axle, with a 330mm ring that is 26mm thick when new and a black-anodized aluminum hat. The hat is reused for life.

When should the Corvette rear rings be replaced?

GiroDisc recommends replacing them at 24mm, two millimeters below new thickness, or straight away if a crack leads to the edge of the ring. The replacement part is GiroDisc D2-324, supplied in pairs with new hardware for the existing hats.

Are the rotors quiet on a street-driven Corvette?

Yes. GiroDisc assembles each rotor with spring clips and spring washers, which give the ring race-ready float but keep it street friendly, with no noise from loose hardware. The Corvette stays quiet in daily use while gaining a replaceable iron ring.

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Description

GiroDisc Rear Rotors for C5 and C6 Chevrolet Corvette Z51

GiroDisc’s Rear Rotors for C5 and C6 Chevrolet Corvette Z51 models are a direct replacement for the C6 Z51 330mm rear disc, the size fitted with the J55 or heavy-duty brake package, and GiroDisc weighs each at 12.4 lb. The 26mm ring is machined from GiroDisc’s high-carbon iron and floats on a black-anodized 6061-T6 hat. C5 and C6 base cars can run them too with the Z51 rear caliper bracket, which makes this a tidy upgrade path for older Corvettes.

Fitment and Installation

On C6 Z51 cars the rotor drops straight in. On C5 and C6 base cars, GiroDisc specifies the Z51 rear caliper bracket, GM part number 88964167 or an equivalent, which works with the existing calipers and completes the conversion to the Z51 rear brake package. Spring clips and spring washers give the ring race-ready float without noise from loose hardware.

Features

12.4 lb per rotor assembly, per GiroDisc
330mm diameter, 26mm thick ring
24mm minimum thickness
Black-anodized 6061-T6 aluminum hat
Hats, rings and drive pins made in Bellingham, Washington
Curved vanes that pull air in through the hub

What’s Included

Rear rotor assemblies (L/R)

Applications

Chevrolet Corvette base, with Z51 rear caliper bracket: C5, C6
Chevrolet Corvette Z51: C6

Notes

C5 and C6 base cars need the Z51 rear caliper bracket, GM part number 88964167 or equivalent, to fit the Rear Rotors for C5 and C6 Z51 applications
The caliper bracket is not included with the rotors
Worn rings are renewed with the GiroDisc C5 and C6 Z51 rear replacement rings, which bolt to these hats
The GiroDisc C5 and C6 Z51 front rotors complete the set
Stock photography may not depict the actual product

Frequently Asked Questions

Do the GiroDisc Rear Rotors for C5 Corvettes need extra parts? Yes, on base cars. The GiroDisc Rear Rotors for C5 and C6 Z51 applications replace the C6 Z51 330mm rear disc directly. C5 and C6 base cars also need the Z51 rear caliper bracket, GM part number 88964167 or equivalent, which works with the existing calipers.
Which C6 cars take these rear rotors without the bracket? C6 cars built with the Z51 package, whose 330mm rear rotor GiroDisc describes as the J55 or heavy-duty brake package size. These rotors replace that disc directly, so such a car needs no extra parts. Base C6 cars need the Z51 rear caliper bracket first.
How much does each Corvette rear rotor weigh? GiroDisc lists each complete rear assembly at 12.4 lb. The fully floating design sheds unsprung weight and rotating mass from the rear axle, with a 330mm ring that is 26mm thick when new and a black-anodized aluminum hat. The hat is reused for life.
When should the Corvette rear rings be replaced? GiroDisc recommends replacing them at 24mm, two millimeters below new thickness, or straight away if a crack leads to the edge of the ring. The replacement part is GiroDisc D2-324, supplied in pairs with new hardware for the existing hats.
Are the rotors quiet on a street-driven Corvette? Yes. GiroDisc assembles each rotor with spring clips and spring washers, which give the ring race-ready float but keep it street friendly, with no noise from loose hardware. The Corvette stays quiet in daily use while gaining a replaceable iron ring.

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 C5 and C6 Chevrolet Corvette Z51 [A2-324]

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GiroDisc Rear Rotors for C5 and C6 Chevrolet Corvette Z51

Fitment and Installation

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews