Thumbnail for Two-piece Girodisc brake rotors with a slotted and drilled design, predominantly silver in color with black inner surfaces and gold-colored screws.

Thumbnail for Close-up image of a Girodisc 2-piece rear brake rotor with a combination of black and silver colors, featuring drive pins and a floating mount system.

Two-piece Girodisc brake rotors with a slotted and drilled design, predominantly silver in color with black inner surfaces and gold-colored screws.

Close-up image of a Girodisc 2-piece rear brake rotor with a combination of black and silver colors, featuring drive pins and a floating mount system.

Girodisc Front Rotors for Porsche Carrera, 981 / 718 – Includes Spacers & Bolts

Upgrade the front braking system on your Porsche Carrera, 981, or 718 with Girodisc 2-piece front rotors. This system is a direct replacement for the OE discs, with the addition of the included caliper spacers and bolts. Rotor diameter increases to 350 mm from the factory 330 mm, delivering improved braking torque and greater thermal capacity for consistent performance.

A1-153 Vehicle fitment

• Porsche 911 Carrera (non-Turbo) with standard 330 mm front brakes (front axle).
• Porsche 981 / 718 Cayman & Boxster with standard 330 mm front brakes (front axle).
• Supplied spacers and bolts adapt OEM calipers to the larger 350 mm Girodisc rotors.

Note: Always verify wheel and caliper clearance when upsizing to 350 mm rotors.

Lightweight, high-performance rotor engineering

The rotor hats are precision-machined from U.S.-sourced 6061-T6 aircraft-spec aluminum. The iron rotor rings are cast in the USA using Girodisc’s proprietary high-carbon iron alloy, then machined in-house for exacting tolerances. A curved vane design actively pumps cooling air through the disc under braking, improving fade resistance during demanding use.

A1-153 Features

• Direct replacement upgrade with supplied caliper spacers and bolts
• 350 mm diameter vs. OEM 330 mm for greater braking force
• Proprietary high-carbon cast iron rings, cast and machined in the USA
• 6061-T6 aluminum hats, black anodized
• 10 high-strength alloy steel drive pins, cadmium plated for corrosion resistance
• Floating rotor system with anti-noise spring washers
• Self-centering rotor float improves pad alignment under heat
• Replaceable rings allow lower long-term operating cost
• Sold/priced in pairs

Service guidance

• When the iron rings reach minimum thickness or show fatigue cracking, replace only the rings while reusing the aluminum hats and hardware.
• Replacement D1-135 rings are available separately for cost-effective service.

The Girodisc A1-135 front rotor system transforms your braking with increased diameter, improved cooling, and precision floating construction—all while allowing economical service down the road.

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