GiroDisc: two-piece brake discs from the USA
GiroDisc is a US manufacturer that specializes in two-piece brake discs: an aluminum hat is combined with a cast friction ring. Compared to one-piece production discs, this saves noticeable unsprung mass, and the friction ring can be replaced individually - that lowers the follow-up costs. This overview shows what distinguishes GiroDisc.
What two-piece brake discs do better
A GiroDisc consists of a light aluminum hat and a separate, cast friction ring. Compared to one-piece OE discs, that saves around 30 percent weight - less unsprung and rotating mass improves response and handling.
The friction ring is connected to the hat in a floating way via bolts. That allows even heat expansion, improves cooling and ventilation, reduces warping and ensures even wear - with a better pedal feel and finer modulation.
Service-friendly and durable
- Around 30% weight saving compared to OE discs.
- Friction ring individually replaceable - the aluminum hat stays.
- Floating mounting for even wear and less warping.
- Lower follow-up costs over the service life.
Convert ceramic to steel - without vehicle modification
A big advantage of GiroDisc: expensive carbon-ceramic systems can be converted to maintenance-friendly two-piece steel - in the original dimensions and without modification to the vehicle. This is available for BMW, Ferrari, Lamborghini, McLaren, Mercedes and Porsche, among others.
There are solutions for existing high-performance systems too: GiroDisc offers replacement friction rings as a direct substitute for Brembo and Stoptech discs (for example 332 x 32 mm or 355 x 32 mm). For the best road and track day tuning, the combination with Endless brake pads is recommended.
Who GiroDisc is worth it for
GiroDisc suits sport and track day drivers who want to save weight and want thermally durable discs with low follow-up costs - a logical building block in a brake upgrade, often combined with matching sport pads and durable brake fluid.
Frequently asked questions
- What is the advantage of a two-piece GiroDisc over a normal disc?
- It is lighter (less unsprung mass), the floating-mounted friction ring expands more evenly and warps less, and the friction ring can be replaced individually. That improves handling and thermal durability and lowers the follow-up costs compared to a complete one-piece disc.
- Is GiroDisc the same as carbon-ceramic?
- No. GiroDisc are two-piece discs with a cast steel friction ring (gray cast iron), not made of carbon-ceramic. They are the significantly cheaper, easily serviceable alternative and, for most sport and track day drivers, the better compromise between performance and price.
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