Girodisc 2-Piece Floating Brake Discs
Girodisc is one of the most respected names in performance brake disc upgrades, especially for drivers who want stronger, more consistent braking without moving to a full big brake kit. Their 2-piece floating rotor systems are designed to replace the original brake discs while retaining the factory calipers, brake balance and ABS behaviour.
This makes Girodisc a popular choice for BMW M cars, Porsche GT models and other performance platforms where brake temperature, disc weight and long-term running costs matter. Instead of replacing the full disc assembly every time, many Girodisc applications allow the cast iron rotor ring to be replaced while reusing the aluminium centre hat.
Why Upgrade to Girodisc?
On fast road and track-focused cars, standard brake discs can struggle with repeated heat cycles, especially when paired with aggressive brake pads and high-temperature brake fluid. Girodisc rotors are built to handle demanding use, with a floating 2-piece design that allows the disc to expand and contract more effectively under heat.
The lightweight aluminium centre hat also helps reduce unsprung and rotational mass compared with many factory one-piece discs. This can improve steering response, suspension control and overall braking consistency, making Girodisc a strong upgrade for cars used on circuit, fast road or heavy-performance driving.
Girodisc for BMW M Cars
Girodisc brake discs are a popular upgrade for BMW M platforms including the BMW M2, M2 Competition, M3 and M4. These cars respond well to brake upgrades, especially when used with quality pads such as Pagid Racing, Endless, EBC Racing or Ferodo DS compounds.
For BMW F8X and F87 applications, always check caliper colour, disc size and whether the car has standard iron brakes, upgraded 2NH brakes or carbon ceramic brakes. Choosing the correct Girodisc fitment is essential, as some BMW models use different front and rear disc sizes depending on factory brake package.
Girodisc for Porsche GT Models
Porsche GT cars are often used in exactly the kind of environment Girodisc discs are built for: repeated high-speed braking, track days, fast road use and demanding heat cycles. Girodisc steel rotor upgrades are commonly considered for Porsche 911 GT3, GT3 RS, GT2 RS and Cayman GT4 models, especially where owners want strong braking performance while avoiding the high replacement cost of factory carbon ceramic discs.
Complete Your Brake Setup
For the best results, Girodisc discs should be matched with the correct pad compound, fresh high-temperature brake fluid and, where needed, braided brake lines or brake cooling. If you are building a fast road, track day or clubsport setup, we can help match Girodisc discs with the right supporting brake components for your vehicle and driving style.
Girodisc FAQ's
Are Girodisc brake discs a direct replacement for OEM discs?
In most applications, yes. Girodisc systems are designed as direct replacements for the original brake disc and usually work with the factory calipers and pads. Some applications may include spacers or longer bolts if required, so always check the exact vehicle fitment before ordering.
What is the benefit of Girodisc 2-piece discs?
Girodisc 2-piece discs use a cast iron rotor ring with a lightweight aluminium centre hat. This helps reduce unsprung and rotational weight while improving heat management compared with many standard one-piece discs.
Are Girodisc discs good for track days?
Yes. Girodisc discs are well suited to fast road, track day and clubsport use because they are designed to deal with repeated heat cycles and demanding braking loads.
Do I need special brake pads with Girodisc discs?
Not always, but the right pad choice makes a big difference. For road use, a fast road pad may be enough. For track use, pair Girodisc discs with a proper performance or motorsport pad such as Pagid Racing, Endless, Ferodo DS or EBC Racing.
Can I replace just the Girodisc rotor rings?
On many Girodisc 2-piece applications, yes. Once the Girodisc hat is fitted, replacement cast iron rotor rings can be fitted when the discs wear out, helping reduce long-term running costs.
Are Girodisc discs better than OEM BMW discs?
For cars used hard on road or track, Girodisc discs can offer better heat management, lower weight and replaceable rings compared with many standard factory discs. For normal road driving, OEM discs may still be suitable.
Are Girodisc discs suitable for carbon ceramic brake conversions?
Some Girodisc kits are designed to replace factory carbon ceramic discs with iron rotors. This can be a popular option for track use, but the correct pads must be used with iron discs. Girodisc specifically advises changing pads when converting from carbon ceramic to iron rotors.
How do I know which Girodisc discs fit my car?
Check your vehicle model, year, caliper colour, disc size and factory brake package. BMW M cars in particular can have different fitments depending on whether they have blue, red, silver, gold, 2NH or carbon ceramic brake options.






