Which 911 generations do the GiroDisc Rear Rotors for 996 cover?

The GiroDisc Rear Rotors for 996 and 997 are listed by GiroDisc for the 996 and 997 generation Porsche 911. GiroDisc does not split the listing by trim, so it is worth confirming your rear brake setup with Bulletproof Automotive before ordering.

Why do these rear rotors come with spacers and longer bolts?

The GiroDisc ring is 350mm across, larger than the disc it replaces, so the caliper has to sit further out to clear it. The supplied spacers provide that offset, and the longer bolts make up for the added thickness so the factory caliper mounts securely.

Does a floating rear rotor make noise on the street?

No. GiroDisc mounts the drive pins with anti-noise spring washers on the rotor side. The ring can still grow as it heats, but the washers hold it firmly at low temperature, which removes the knocking and rattle normally heard from floating rotors on a cold car.

How is cooling handled inside the rear ring?

The ring uses a curved vane design developed in racing. As the wheel turns, the vanes act like a centrifugal pump, drawing air in at the hub and forcing it out through the disc, which helps the rotor shed heat between stops on a fast road or circuit.

Can these rear rotors be bought as a single disc?

No. GiroDisc sells and prices these rear rotors as a pair, one left and one right. The two are handed because of the curved internal vanes, and each is labeled for its side of the car, so they are always supplied together.

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Description

GiroDisc Rear Rotors for 996 and 997 Porsche 911 with Caliper Spacers

GiroDisc’s Rear Rotors for 996 and 997 Porsche 911 cars bring the rear axle up to a 350mm two-piece floating disc, and the kit includes the caliper spacers and longer bolts the bigger diameter calls for. The ring is cast from GiroDisc’s proprietary iron in the USA and finished in Bellingham, Washington, while the hat is US-sourced 6061-T6 aluminum. Owners who have already fitted the matching front kit will want these to finish the job at the rear.

Design and Performance

Curved vanes cast into the ring act as a centrifugal pump, pulling air in at the hub and driving it out through the disc to carry heat away under repeated braking. The ring floats on ten cadmium-plated alloy steel drive pins, each secured by a class 12.9 cap screw with a hardened washer, and spring washers on the rotor side keep it silent when cold.

Features

Larger 350mm rear ring, per GiroDisc
Caliper spacers and longer bolts included
Ten GiroDisc-made drive pins, cadmium plated for corrosion resistance
Anti-noise spring washers that let the ring grow with heat
Slotted friction face for a clean, water-free surface
Hats stay on the car, so only the rings are replaced later

What’s Included

Rear rotor assemblies (L/R)
Caliper spacers
Longer caliper bolts

Applications

Porsche 911: 996, 997

Notes

The Rear Rotors for 996 and 997 are installed with the supplied caliper spacers and longer bolts
The GiroDisc 996 and 997 front rotors are the front companion and also step up to 350mm
GiroDisc lists the GiroDisc 991 and 992 rear rotors for later 911 generations
Contact Bulletproof Automotive for the correct replacement rings when these reach minimum thickness
Stock photography may not depict the actual product

Frequently Asked Questions

Which 911 generations do the GiroDisc Rear Rotors for 996 cover? The GiroDisc Rear Rotors for 996 and 997 are listed by GiroDisc for the 996 and 997 generation Porsche 911. GiroDisc does not split the listing by trim, so it is worth confirming your rear brake setup with Bulletproof Automotive before ordering.
Why do these rear rotors come with spacers and longer bolts? The GiroDisc ring is 350mm across, larger than the disc it replaces, so the caliper has to sit further out to clear it. The supplied spacers provide that offset, and the longer bolts make up for the added thickness so the factory caliper mounts securely.
Does a floating rear rotor make noise on the street? No. GiroDisc mounts the drive pins with anti-noise spring washers on the rotor side. The ring can still grow as it heats, but the washers hold it firmly at low temperature, which removes the knocking and rattle normally heard from floating rotors on a cold car.
How is cooling handled inside the rear ring? The ring uses a curved vane design developed in racing. As the wheel turns, the vanes act like a centrifugal pump, drawing air in at the hub and forcing it out through the disc, which helps the rotor shed heat between stops on a fast road or circuit.
Can these rear rotors be bought as a single disc? No. GiroDisc sells and prices these rear rotors as a pair, one left and one right. The two are handed because of the curved internal vanes, and each is labeled for its side of the car, so they are always supplied together.

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 996 and 997 Porsche 911 with Caliper Spacers [A2-032A]

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GiroDisc Rear Rotors for 996 and 997 Porsche 911 with Caliper Spacers

Design and Performance

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews