Which Porsche do the GiroDisc 380x32mm Front Rotors for Porsche fit?

The GiroDisc 380x32mm Front Rotors for Porsche fit the Cayman GT4 Clubsport race car. GiroDisc lists them as a direct replacement for the factory cup car disc that bolts on and works with the original calipers, so the conversion needs no changes to the front brake system.

Do the GT4 Clubsport front rings interchange with another Porsche?

Yes. The replacement ring for this rotor is GiroDisc D1-238, a 380x32mm front ring that GiroDisc also lists for the 991 GT3 Cup. A team running both cars can stock one ring part number for the front axles of each.

Is a different drive pin needed for center lock wheels?

It can be. GiroDisc offers a center lock drive pin option for cars that came with factory center lock wheels. Let us know how your GT4 Clubsport is set up when ordering, and we will confirm the correct version with GiroDisc first.

What material is the Clubsport front ring made from?

The ring is cast from GiroDisc proprietary iron, poured in the USA and machined from start to finish at the GiroDisc facility. The curved vane design inside the casting came from racing and works as a centrifugal pump to move cooling air through the disc.

How does the floating hat help on a race car?

The aluminum hat is joined to the iron ring by cadmium-plated alloy steel drive pins with class 12.9 cap screws. The pins carry the braking load while letting the ring float axially and radially, so the hot iron can expand without dragging the hat out of shape.

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Description

GiroDisc 380x32mm Front Rotors for Porsche Cayman GT4 Clubsport

GiroDisc’s 380x32mm Front Rotors for Porsche Cayman GT4 Clubsport race cars replace the factory cup car disc with a floating two-piece design that is cheaper to run over a season. The iron ring is GiroDisc’s own casting, poured in the USA and fully machined in-house, and it rides on a hat of US-sourced 6061-T6 aircraft-specification aluminum. These suit a Clubsport campaigned in club racing or endurance series, where front discs are consumed quickly and replacing just the iron keeps the budget in check.

Bolt-On and Go

GiroDisc builds this as a direct replacement: it bolts to the hub of the GT4 Clubsport and works with the original front calipers, so no brackets or machining are involved. When the rings eventually wear, the hats stay in the parts bin for the next set.

Features

Floating hat in US-sourced 6061-T6 aircraft-specification aluminum
Proprietary cast iron ring poured in the USA
Curved vanes that force cooling air through the disc
Drive pins cadmium plated for long corrosion resistance
Anti-noise spring washers that allow heat growth without rattle
Front ring shared with the 991 GT3 Cup

What’s Included

Front rotor assemblies (L/R)

Applications

Porsche Cayman GT4 Clubsport: Factory race car

Notes

The GiroDisc 380x32mm Front Rotors for Porsche are sold and priced as a pair
Cars with center lock wheels need the GiroDisc center lock drive pin option; ask us before ordering
Replacement rings are the GiroDisc 991 Cup and GT4 Clubsport front replacement rings
At the rear, fit the GiroDisc GT4 Clubsport rear rotors
Stock photography may not depict the actual product

Frequently Asked Questions

Which Porsche do the GiroDisc 380x32mm Front Rotors for Porsche fit? The GiroDisc 380x32mm Front Rotors for Porsche fit the Cayman GT4 Clubsport race car. GiroDisc lists them as a direct replacement for the factory cup car disc that bolts on and works with the original calipers, so the conversion needs no changes to the front brake system.
Do the GT4 Clubsport front rings interchange with another Porsche? Yes. The replacement ring for this rotor is GiroDisc D1-238, a 380x32mm front ring that GiroDisc also lists for the 991 GT3 Cup. A team running both cars can stock one ring part number for the front axles of each.
Is a different drive pin needed for center lock wheels? It can be. GiroDisc offers a center lock drive pin option for cars that came with factory center lock wheels. Let us know how your GT4 Clubsport is set up when ordering, and we will confirm the correct version with GiroDisc first.
What material is the Clubsport front ring made from? The ring is cast from GiroDisc proprietary iron, poured in the USA and machined from start to finish at the GiroDisc facility. The curved vane design inside the casting came from racing and works as a centrifugal pump to move cooling air through the disc.
How does the floating hat help on a race car? The aluminum hat is joined to the iron ring by cadmium-plated alloy steel drive pins with class 12.9 cap screws. The pins carry the braking load while letting the ring float axially and radially, so the hot iron can expand without dragging the hat out of shape.

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 380x32mm Front Rotors for Porsche Cayman GT4 Clubsport [A1-266]

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GiroDisc 380x32mm Front Rotors for Porsche Cayman GT4 Clubsport

Bolt-On and Go

Features

What’s Included

Applications

Notes

Frequently Asked Questions

About GiroDisc

Reviews