GiroDisc Rear Brake Rotors Slotted Pair Subaru STI 2018-2021 | A2-185 Girodisc

Fitment Information:

2018-2021 Subaru STI

Fitment Note: Requires trimmed rear brake pads for clearance.

Features:

• Location: Rear
• Sold as a pair

The Girodisc 2-piece rotors for your 2018-2021 STi are a direct replacement upgrade for your factory rotors. By upgrading your rotors with lightweight, high-performance replacements as opposed to a big brake kit, your factory setup and specs are maintained as well as your ABS efficiency. This reduction in rotational and unsprung weight allows for quicker acceleration and suspension response.

The central hat section of each rotor is made from strictly U.S. sourced 6061-T6 aircraft specification aluminum. The disc is made from Girodic’s  own proprietary cast iron, poured in the USA and machined from start to finish in house at Girodisc. The rotor utilizes a curved vane design, developed in racing to act as a centrifugal pump to force cooling air through the disc.

The rotor and hat have a floating mount system, which utilizes 10 high strength alloy steel drive pins, manufactured by Girodisc in the USA to our own specifications and cadmium plated for a long lasting corrosion resistance. These pins take the load from braking actions while maintaining the axial and radial float between the hat and disc. The pins are secured by grade class 12.9 screws with hardened washers. In order to keep the rotors from making noise when cold, the pins are mounted with anti-noise spring washers on the rotor side which allow the rotor to grow with heat expansion but eliminate the rattle and noise associated with floating rotors. This float also allows the rotor to self center between the pads.

When you need to replace the rotor rings, they are available separately with new hardware and you can reuse the Girodisc hats.