Girodisc Rear Steel Disc Conversion – 390mm – Porsche 991 GT3 / GT3 RS / GT2 RS / 718 GT4 RS - Clubsport Garage

Girodisc Front Steel Disc Conversion – 410mm – Porsche 991 GT3 / GT3 RS / GT2 RS / 718 GT4 RS

By Girodisc
£1,995.00
Available – Dispatched within 3–5 Days
Worldwide Shipping
Official Dealer
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Product Description

The Girodisc 410mm Front Steel Disc Conversion Kit is a direct replacement front brake disc conversion for Porsche GT models originally equipped with PCCB carbon ceramic front brakes. Also referred to as iron rotors, this kit replaces the factory 410mm carbon ceramic front discs with high-performance 2-piece floating steel rotors.

Designed for Porsche GT owners who drive hard on track, want sharper pedal feedback or wish to preserve expensive OEM ceramic discs, the Girodisc front conversion offers improved thermal resistance, strong brake modulation and reduced long-term running costs.

Each rotor uses a lightweight 6061-T6 aluminium hat, anodised for corrosion resistance, paired with a steel / iron rotor ring. The directional curved vane design helps move cooling air through the disc under repeated heavy braking, supporting consistent performance during track, endurance and fast road use.

The kit retains compatibility with the OEM PCCB yellow calipers and factory brake lines. For best performance and brake balance, converting both front and rear discs together is strongly recommended.

Sold and priced as a front axle pair.

🔧 Note: We recommend replacing front and rear discs together. Mixing ceramic rear discs with steel fronts can affect brake balance and performance.

⚠️ Designed specifically for vehicles originally equipped with PCCB carbon ceramic brakes. Not suitable for cars with factory steel discs (see below).

Important Fitment Note

Porsche models fitted with steel brakes from factory use a different disc diameter and mounting spec. If your vehicle has factory steel discs...

Girodisc Front Steel Disc Upgrade – 380mm – Porsche 991 GT3 / GT3 RS (Steel Brakes)

Rear Conversion Also Available

We also offer the matching Girodisc rear steel conversion kit. For best performance, we recommend converting both front and rear together...

Girodisc Rear Steel Disc Conversion – 390mm – Porsche 991 GT3 / GT3 RS / GT2 RS / 718 GT4 RS

Further information below.

Key Features
  • Girodisc 410mm front steel disc conversion kit
  • Also referred to as iron rotors
  • Designed to replace factory PCCB carbon ceramic front discs
  • Front axle fitment
  • 410mm front disc diameter
  • Direct replacement for OEM PCCB front discs
  • For vehicles originally fitted with PCCB front brakes
  • 2-piece floating steel disc design
  • Lightweight 6061-T6 aluminium hats
  • Anodised for corrosion resistance
  • Directional curved vane cooling
  • Improved thermal resistance for track use
  • Sharp pedal feel and brake modulation
  • Reduced long-term maintenance costs compared with replacement ceramics
  • Fully CNC machined in the USA
  • Compatible with OEM PCCB yellow calipers
  • Compatible with OEM brake lines
  • Suitable for track use, endurance racing and fast road applications
  • Compatible with performance pad compounds including Ferodo DS3.12, Endless ME20 / ME22 and PFC 08 / 11
  • Matching 390mm Girodisc rear steel conversion kit available separately
  • New hardware included with replacement discs
  • Aluminium bells do not require replacement when changing worn rotor rings
  • Sold and priced as a pair

Vehicle Compatibility
  • Only suitable for vehicles originally equipped with PCCB carbon ceramic front brakes.
  • Porsche 991.1 GT3
  • Porsche 991.2 GT3
  • Porsche 991.1 GT3 RS
  • Porsche 991.2 GT3 RS
  • Porsche 991.2 GT2 RS
  • Porsche 718 Cayman GT4 RS
  • Not suitable for vehicles fitted with factory steel discs.
  • Factory steel brake cars use a different disc diameter and mounting specification, and require the correct 380mm Girodisc front steel disc upgrade instead.
  • For optimal performance and brake balance, use with the matching 390mm Girodisc rear steel disc conversion kit.
  • Please confirm vehicle model, brake package, front disc size, caliper colour and whether the vehicle was originally fitted with PCCB before ordering.

What's Included
  • Pair of Girodisc 410mm front steel discs / iron rotors
  • Left front 2-piece floating rotor
  • Right front 2-piece floating rotor
  • Lightweight 6061-T6 aluminium hats
  • Anodised aluminium bell / hat assemblies
  • Steel / iron rotor rings
  • Floating rotor hardware
  • Brake pads, brake lines, rear rotors, brake fluid and fitting consumables are not included unless supplied separately.

FAQs

What is the Girodisc front steel disc conversion kit designed for?

It is designed to replace factory 410mm PCCB carbon ceramic front discs with 2-piece floating steel / iron rotors.

Are these front or rear discs?

This listing is for front discs / rotors.

What size are the front discs?

These are 410mm front discs.

Are they sold individually or as a pair?

They are sold and priced as a pair.

Which vehicles does this kit fit?

It fits selected Porsche GT models originally equipped with PCCB front brakes, including 991 GT3, 991 GT3 RS, 991.2 GT2 RS and 718 Cayman GT4 RS applications.

Is this kit suitable for factory steel brake cars?

No. This kit is designed specifically for vehicles originally equipped with PCCB carbon ceramic brakes.

What do factory steel brake cars need instead?

Factory steel brake cars require the correct 380mm Girodisc front steel disc upgrade.

Will it work with OEM yellow calipers?

Yes. The kit is compatible with the OEM PCCB yellow calipers.

Do I need to change the brake lines?

No. The kit retains compatibility with the OEM brake lines.

Why convert from PCCB to steel discs?

Steel discs can offer improved thermal resistance for repeated track use, sharper pedal feel, better brake modulation and lower long-term replacement costs.

Should I convert the front and rear discs together?

Yes. For best performance and brake balance, converting front and rear discs together is recommended.

Which rear kit matches this front conversion?

This front kit is designed to pair with the matching 390mm Girodisc rear steel disc conversion kit.

Which brake pads can be used with these discs?

Suitable performance pad options include Ferodo DS3.12, Endless ME20 / ME22 and PFC 08 / 11, depending on intended use.

Can the rotor rings be replaced separately?

Yes. Once the Girodisc kit is installed, only the disc / rotor rings need to be replaced when worn. The aluminium bells do not require replacement.

What should I check before ordering?

Please confirm vehicle model, brake package, front disc size, caliper colour and whether your car was originally fitted with PCCB front brakes before ordering.

Shipping & Delivery

Dispatch Times

Most stocked items dispatch within 1–2 business days. Some products may have longer lead times due to special ordering, availability, or build times. If your order contains multiple items, they may be shipped together once all items are ready unless otherwise agreed.

UK & International Shipping

We ship worldwide. Transit times vary depending on destination and courier. Tracking details are provided once your order is dispatched.

Import Duties & International Orders

International customers are responsible for all import duties, taxes, and clearance fees. These are not included in our prices and are outside of our control. Refusal or non-payment of import charges may result in return shipping, handling fees, and customs charges being deducted from any refund.

Damaged Shipments

If your parcel arrives visibly damaged, please refuse delivery or note the damage with the courier. If damage is discovered after opening, contact us immediately with photos. Do not install damaged items, as installation voids courier claims and return eligibility.

Returns

Returns must be authorised before sending anything back. Returns must be requested within 14 days of delivery and returned within 14 days of approval, in unused/uninstalled condition and in original packaging. Some items, including special-order, built-to-order, used, installed, or modified parts, are non-returnable.

Full details are available in our Shipping Policy and Returns & Refund Policy.

Warranty & Disclaimer

Warranty

Most products include a manufacturer’s warranty covering manufacturing defects only. Warranties do not cover wear and tear, improper installation, misuse or neglect, track use, competition or racing environments, labour costs, vehicle damage, downtime, or consequential loss. Warranty outcomes are determined by the manufacturer, not Clubsport Garage. Items must be returned for inspection at the customer’s cost unless agreed otherwise.

Fitment & Installation

Many products are aftermarket components and may require professional installation or minor adjustment. Perfect OEM-level fitment cannot be guaranteed. Professional installation by an experienced workshop is strongly recommended. Installed or used items cannot be returned.

Motorsport Use Disclaimer

Some products are intended for off-road, track, or motorsport use only and may not be legal for road use, for example non-TÜV/DOT-approved parts. It is the customer’s responsibility to ensure compliance with local laws, insurance requirements, and vehicle regulations. By purchasing and installing aftermarket parts, you accept all responsibility for ensuring compatibility, legal compliance, proper installation, and any resulting wear, damage, or failure.

Product Images & Descriptions

Product photos are illustrative and may differ slightly from the item supplied. If specific details are important, please contact us before purchasing.

Full details are available in our Terms of Service and related policy pages.