Do the GiroDisc Z51 Rear Rotors for C8 need any modification to fit?

No. The GiroDisc Z51 Rear Rotors for C8 are a direct replacement for the factory rear disc on the Z51 Stingray. They bolt to the hub, the original calipers go back on, and the brake bias and ABS behave as they did before the change.

Why upgrade the rear rotors on a mid-engine Corvette?

On a mid-engine car the rear axle carries a large share of the weight, so the rear brakes do more of the work than on a front-engine layout. Fitting GiroDisc at the rear as well as the front keeps the balance of the system as Chevrolet designed it, with lighter floating discs at all four corners.

How should a worn Corvette rear ring be identified?

GiroDisc marks the minimum thickness on the hat and on the edge of the ring. When a measurement across the friction face reaches that figure, or a crack runs out to the edge, the rear rings are due. The D2-242 pair replaces them on the same hats.

Are the C8 rear rotors handed?

Yes. The curved vanes inside each ring work as a centrifugal pump and have to rotate in the correct direction to move air from the hub outward. GiroDisc labels every rotor for its side, so check the marking against the corner before mounting it.

Do the C8 rear cap screws need to be torqued tight?

No. The cap screws holding the drive pins are never tightened beyond 60 in-lb, which is 7 Nm. A floating rotor is designed to allow slight movement between ring and hat, so screws that look loose are normal and should not be overtightened.

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Description

GiroDisc Z51 Rear Rotors for C8 Chevrolet Corvette

GiroDisc’s Z51 Rear Rotors for C8 Chevrolet Corvette complete a four-corner GiroDisc setup on the Z51 Stingray, putting the same floating two-piece construction on the rear axle that carries the larger share of the mid-engine car’s weight. The rotor is a direct replacement that bolts to the hub and runs with the factory rear calipers. Rings are GiroDisc’s own iron, poured in the USA, and hats are 6061-T6 aluminum from US sources. Fit them with the matching fronts and the car keeps its factory brake balance while losing rotating mass at both ends.

Bolt-On and Go

No machining, spacers or caliper changes are involved. The GiroDisc Z51 Rear Rotors for C8 slide on in place of the stock discs, the original calipers refit, and the ABS calibration carries on untouched. Ten drive pins secured by class 12.9 cap screws let each ring float on its hat, while spring washers on the pins stop cold rattle without restricting thermal growth.

Features

Direct replacement for the Z51 rear disc
Retains the factory rear calipers
Ten cadmium-plated alloy steel drive pins
Anti-noise spring washers on the drive pins
Curved internal cooling vanes
Reusable aluminum hat for future ring changes

What’s Included

Rear rotor assemblies (L/R)

Applications

Chevrolet Corvette Stingray with Z51 Performance Package: C8 | 6.2L LT2 V8

Notes

The GiroDisc C8 Z51 rear replacement rings bolt to these hats once the iron is worn
Matching fronts are the GiroDisc C8 Z51 front rotors
Each rotor is labeled left or right for its corner
Stock photography may not depict the actual product

Frequently Asked Questions

Do the GiroDisc Z51 Rear Rotors for C8 need any modification to fit? No. The GiroDisc Z51 Rear Rotors for C8 are a direct replacement for the factory rear disc on the Z51 Stingray. They bolt to the hub, the original calipers go back on, and the brake bias and ABS behave as they did before the change.
Why upgrade the rear rotors on a mid-engine Corvette? On a mid-engine car the rear axle carries a large share of the weight, so the rear brakes do more of the work than on a front-engine layout. Fitting GiroDisc at the rear as well as the front keeps the balance of the system as Chevrolet designed it, with lighter floating discs at all four corners.
How should a worn Corvette rear ring be identified? GiroDisc marks the minimum thickness on the hat and on the edge of the ring. When a measurement across the friction face reaches that figure, or a crack runs out to the edge, the rear rings are due. The D2-242 pair replaces them on the same hats.
Are the C8 rear rotors handed? Yes. The curved vanes inside each ring work as a centrifugal pump and have to rotate in the correct direction to move air from the hub outward. GiroDisc labels every rotor for its side, so check the marking against the corner before mounting it.
Do the C8 rear cap screws need to be torqued tight? No. The cap screws holding the drive pins are never tightened beyond 60 in-lb, which is 7 Nm. A floating rotor is designed to allow slight movement between ring and hat, so screws that look loose are normal and should not be overtightened.

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 Z51 Rear Rotors for C8 Chevrolet Corvette [A2-242]

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GiroDisc Z51 Rear Rotors for C8 Chevrolet Corvette

Bolt-On and Go

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews