What is the benefit of a two-piece floating rotor design?

A two-piece floating rotor uses a separate hat and rotor ring. This allows the rotor to expand and contract with heat without putting stress on the mounting points, which helps prevent warping and maintain consistent braking.

Does this rotor come with mounting hardware?

This listing is for the Alcon Pro-System replacement rotor only. Mounting hardware is not included and should be sourced separately if needed.

Is this rotor suitable for street use?

While built for demanding track conditions, this rotor can be used on the street. However, its design is optimized for high-heat performance, and it may wear faster under typical street driving compared to a standard OE rotor.

Specifications

Brand: Alcon
Part #: ROR.910579
UPC: 854071039762

Alcon Pro-System Porsche 991 GT3 Cup 3802mm PFC Replacement Rotor - Left Front

Name: Alcon Pro-System Porsche 991 GT3 Cup 3802mm PFC Replacement Rotor - Left Front
Brand: Alcon
SKU: alcon-alcon-pro-system-porsche-991-gt3-cup-3802mm-pfc-replacement-rotor-left-fro-t14-721969
Price: 389.12 USD
Availability: BackOrder

$389.12

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Alcon Pro-System replacement rotor for Porsche 991 GT3 Cup, left front. Direct fit for 380mm PFC applications.

Key Features

Two-piece floating rotor construction — helps manage heat and reduces the risk of rotor distortion.
Direct replacement for 380mm PFC rotors — fits the original caliper and mounting hardware.
Built for track conditions — designed to withstand higher temperatures and repeated stress.

This rotor is designed for the Porsche 991 GT3 Cup with 380mm PFC brake systems.

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