A1-306 Girodisc Porsche 992 GT3, GT3 RS Front Rotors (36mm)

These Girodisc A1-306 2-piece front rotors are a direct bolt-on for Porsche 992 GT3 and 992 GT3 RS with 36 mm-thick steel front rotors (not for PCCB). Floating construction reduces unsprung and rotational mass while preserving OE calipers, ABS, and brake bias.

Vehicle Fitment

• Porsche 911 (992) GT3 – Front, 36 mm steel rotors (non-PCCB)
• Porsche 911 (992) GT3 RS – Front, 36 mm steel rotors (non-PCCB)

Not compatible with PCCB (carbon-ceramic) brake packages.

High-Carbon Rings & Curved-Vane Cooling

The rings are machined from Girodisc’s proprietary high-carbon iron and use curved internal vanes that act as a centrifugal pump to pull cooling air through the rotor. Spring-preloaded floating hardware allows thermal expansion while minimizing noise for street use.

Features

• Direct OE replacement; no modifications required
• 2-piece floating design reduces unsprung/rotational mass
• High-carbon iron rings; reusable 6061-T6 aluminum hats
• Cadmium-plated high-strength drive pins, clips, Belleville washers
• Manufactured and assembled in Bellingham, WA
• Sold/priced per pair

A1-306 FAQs

Does this fit PCCB cars? No. This listing is for 36 mm steel-rotor cars; PCCB uses different discs.

Do I need new calipers or brackets? No — the rotors bolt to OE hubs and work with the factory calipers.

Are replacement rings available? Contact us for availability; rings are sold in pairs for Girodisc hats only.