GiroDisc A1-291 Front 2-Piece Rotors for 22-25 Porsche 718 Cayman GT4 RS

Vehicle Fitment

• 2022-2025 Porsche 718 Cayman GT4 RS (Front)

Fitment Notes

• Direct replacement for the OE front rotor - bolts on with no modifications and works with factory calipers

Features

• Two-piece floating rotor design reduces unsprung and rotational weight
• 6061-T6 aircraft-spec aluminum hat, US-sourced
• Proprietary cast iron disc, poured and machined in-house in the USA
• Curved vane design acts as a centrifugal pump for improved cooling
• Floating mount system with high-strength alloy steel drive pins
• Fully rebuildable - replace only the cast iron ring when worn
• Maintains factory brake bias and ABS efficiency vs. a big brake kit swap

Specifications

• Position: Front
• Hat Material: 6061-T6 aluminum
• Disc Material: Proprietary cast iron
• Edge Style: Slotted

Included Components

• 2x GiroDisc A1-291 Front 2-Piece Rotor (pair)

Product Description

The GiroDisc A1-291 is a front 2-piece slotted rotor set built as a direct bolt-on replacement for the 2022-2025 Porsche 718 Cayman GT4 RS, working with factory calipers with no modification needed. The cast iron disc rides on a 6061-T6 aluminum hat, cutting significant rotating and unsprung weight compared to the stock rotor.

A floating pin mount lets the disc self-center and expand with heat without the noise typical of some floating rotors, while the curved vane design pulls cooling air through under braking. Since only the cast iron ring wears over time, the aluminum hat can be reused with a replacement ring rather than buying a full new rotor - a durability advantage for a track-focused car like the GT4 RS.