GiroDisc 2018+ Subaru WRX STI Slotted Front Rotors

The Girodisc A1-185 is a direct replacement, 2-piece floating front brake rotor system designed to work with OE calipers without modifications, maintaining factory brake bias and ABS efficiency. The hat is made from U.S. sourced 6061-T6 aircraft specification aluminum. The disc is proprietary cast iron, poured and machined in-house in the USA, featuring a curved vane design (48 vanes) for cooling. The floating mount system uses 10 (or 8/10) cadmium-plated, high-strength alloy steel drive pins with anti-noise spring washers to prevent rattling and allow for heat expansion and self-centering. Each rotor weighs approximately 16.5 lbs, a 4 lb saving over stock 20.5 lb units, reducing rotational and unsprung weight for quicker acceleration and improved suspension response.