GiroDisc A1-203 Slotted 2-Piece Front Brake Rotors for 2017-2023 Porsche 718/991

Vehicle Fitment

• 2017-2023 Porsche 718 Boxster S/GTS (All trims, RWD)
• 2017-2023 Porsche 718 Cayman S/GTS (All trims, RWD)
• 2017-2023 Porsche 991.2 Carrera/C4/T (All trims, RWD/AWD)
• 2017-2023 Porsche 992 Carrera/C4/T (All trims, RWD/AWD)

Features

• Direct replacement for OEM front rotors; no modifications required
• Two-piece slotted design for improved heat dissipation and braking performance
• Approximately 2 kg (4.4 lbs) lighter per rotor compared to stock units
• Curved vane design enhances airflow and cooling efficiency
• Constructed with U.S.-sourced 6061-T6 aircraft-grade aluminum center hats
• Proprietary high-carbon cast iron rotor rings for durability and performance
• Compatible with OEM brake calipers and hardware
• Replaceable rotor rings allow for cost-effective maintenance

Specifications

• Front rotor size: 350 mm x 28 mm
• Material: High-carbon cast iron rotor rings with 6061-T6 aluminum center hats
• Weight: Approximately 35.6 lbs per pair
• Compatibility: OEM calipers, RWD/AWD drivetrain
• Rotor style: Slotted
• Rotor treatment: Cryogenically treated
• Rotor coating: Non-coated
• Mounting: Floating rotor system with high-strength alloy steel drive pins

Included Components

• 1x Front Left GiroDisc A1-203 Rotor
• 1x Front Right GiroDisc A1-203 Rotor
• 2x Sets of Mounting Hardware

Product Description

The GiroDisc A1-203 Slotted 2-Piece Rotor Set is designed as a direct replacement for the OEM front rotors on the 2017-2023 Porsche 718 Boxster S/GTS, 718 Cayman S/GTS, 991.2 Carrera/C4/T, and 992 Carrera/C4/T. These rotors are engineered to bolt directly to the vehicle without any modifications, ensuring compatibility with the factory brake system.

Featuring a two-piece design, the A1-203 rotors combine high-carbon cast iron rotor rings with lightweight 6061-T6 aluminum center hats. This configuration reduces unsprung weight by approximately 2 kg (4.4 lbs) per rotor compared to stock units, enhancing acceleration and suspension response. The slotted design improves heat dissipation and reduces brake fade, making them suitable for both street and track use.

Installation is straightforward, utilizing the existing OEM calipers and hardware. The floating rotor system, secured with high-strength alloy steel drive pins, allows for thermal expansion while maintaining rotor alignment. This setup ensures consistent braking performance under demanding conditions.

Please note that these rotors are not compatible with the Carbon Ceramic Matrix (CCM) brake systems. For vehicles equipped with CCM brakes, alternative rotor options are required.