Do the GiroDisc 380x30mm Rear Rotors for Porsche fit the GT4 Clubsport?

Yes. GiroDisc lists the GiroDisc 380x30mm Rear Rotors for Porsche for the Cayman GT4 Clubsport as a direct replacement for the factory cup car disc. They bolt to the car and work with the original rear calipers, and they are sold as a pair for the rear axle.

What size is the Clubsport rear disc?

GiroDisc gives the rear disc as 380mm in diameter and 30mm thick, two millimeters thinner than the 380x32mm front disc on the same car. The ring is cast iron with an internal curved vane core that pumps air outward from the hub as the wheel turns.

Which ring part number renews the Clubsport rear rotors?

The matching ring is GiroDisc D2-238, a 380x30mm rear pair supplied with new drive pin hardware. GiroDisc lists the same ring for the 991 GT3 Cup rear rotor, so one rear ring part number covers both race cars in a mixed Porsche paddock.

Will the rear rotors make noise in the paddock?

No. Anti-noise spring washers are fitted on the rotor side of every drive pin. They allow the iron ring to grow as it heats but stop the cold rattle that floating rotors are known for, so the car rolls quietly between sessions.

Are the rear rotors left and right specific?

Yes. GiroDisc rotors are left and right handed so the curved vanes rotate in the direction that pumps air outward through the disc. Each assembly is labeled for its corner, and fitting them to the marked side preserves the cooling the vane design is built for.

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Description

GiroDisc 380x30mm Rear Rotors for Porsche Cayman GT4 Clubsport

GiroDisc’s 380x30mm Rear Rotors for Porsche Cayman GT4 Clubsport cars give the rear axle the same serviceable floating construction as GiroDisc’s front set for the car. Each ring is 380mm across and 30mm thick, cast in GiroDisc’s proprietary iron and machined in-house, then mounted to an aircraft-specification 6061-T6 aluminum hat. The rear rings are shared with the 991 GT3 Cup, which simplifies spares for mixed Porsche race programs. This is the right rear disc for a Clubsport owner who already runs GiroDisc at the front.

Fitment and Installation

These bolt directly to the car in place of the factory cup car disc and work with the original rear calipers. The drive pins are secured by class 12.9 cap screws with hardened washers, and anti-noise spring washers let the ring expand freely while staying quiet when cold.

Features

380mm diameter, 30mm thick rear ring
Direct replacement for the factory cup car disc
Curved vanes developed in racing
High-strength alloy steel drive pins, cadmium plated
Hats reused when the rings wear
Rear ring shared with the 991 GT3 Cup

What’s Included

Rear rotor assemblies (L/R)

Applications

Porsche Cayman GT4 Clubsport: Factory race car

Notes

The GiroDisc 380x30mm Rear Rotors for Porsche are sold and priced as a pair
Cars with center lock wheels need the GiroDisc center lock drive pin option; check with us before ordering
Worn rings are renewed with the GiroDisc 991 Cup and GT4 Clubsport rear replacement rings
Pair them with the GiroDisc GT4 Clubsport front rotors
Stock photography may not depict the actual product

Frequently Asked Questions

Do the GiroDisc 380x30mm Rear Rotors for Porsche fit the GT4 Clubsport? Yes. GiroDisc lists the GiroDisc 380x30mm Rear Rotors for Porsche for the Cayman GT4 Clubsport as a direct replacement for the factory cup car disc. They bolt to the car and work with the original rear calipers, and they are sold as a pair for the rear axle.
What size is the Clubsport rear disc? GiroDisc gives the rear disc as 380mm in diameter and 30mm thick, two millimeters thinner than the 380x32mm front disc on the same car. The ring is cast iron with an internal curved vane core that pumps air outward from the hub as the wheel turns.
Which ring part number renews the Clubsport rear rotors? The matching ring is GiroDisc D2-238, a 380x30mm rear pair supplied with new drive pin hardware. GiroDisc lists the same ring for the 991 GT3 Cup rear rotor, so one rear ring part number covers both race cars in a mixed Porsche paddock.
Will the rear rotors make noise in the paddock? No. Anti-noise spring washers are fitted on the rotor side of every drive pin. They allow the iron ring to grow as it heats but stop the cold rattle that floating rotors are known for, so the car rolls quietly between sessions.
Are the rear rotors left and right specific? Yes. GiroDisc rotors are left and right handed so the curved vanes rotate in the direction that pumps air outward through the disc. Each assembly is labeled for its corner, and fitting them to the marked side preserves the cooling the vane design is built for.

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 380x30mm Rear Rotors for Porsche Cayman GT4 Clubsport [A2-266]

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GiroDisc 380x30mm Rear Rotors for Porsche Cayman GT4 Clubsport

Fitment and Installation

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews