D1-308 Girodisc Mercedes 360mm Front Replacement Rings

These Girodisc D1-308 front replacement rings are sold in pairs and include new hardware. They are designed to bolt to existing Girodisc aluminum hats only (not compatible with OEM or other hats).

Vehicle Fitment

• Mercedes-AMG GT (C190) 2017+ – Front (for Girodisc 360 mm kits)

Design & Performance

High-carbon iron rings with 48 curved internal vanes draw cooling air through the rotor. Floating two-piece construction reduces unsprung weight while reusable aluminum hats allow ring-only replacement.

Features

• Replacement rings only; reuse your Girodisc hats
• Includes new drive pins, spring clips, and Belleville washers
• High-carbon iron rings with directional internal vanes
• Slotted face for stable friction and pad cleanup
• For Girodisc 360 mm front kits on the listed models

D1-308 Girodisc Mercedes 360mm Front Replacement Rings FAQs:

How do I know these rings match my hats? Verify your hat part number from the original Girodisc kit; D1‑308 mates to 360 mm front hats used in the listed AMG GT applications.

What is the minimum thickness? Replace when worn to Girodisc’s stated discard thickness or if cracks reach an edge (inspect regularly for track use).

Do I need threadlocker on the hardware? Use the supplied hardware and follow Girodisc torque/spec sheet; do not substitute fasteners.

Can I run these with drilled pads or track pads? Yes. Slotted rings are compatible with OEM and aggressive compounds; follow pad bedding procedures.

Related Products

• A1-308 Girodisc Mercedes 360mm Front Rotors
• A2-148 Girodisc Mercedes 360mm Rear Rotors
• D1-308 Girodisc Mercedes 360mm Front Replacement Rings
• D2-123 Girodisc Mercedes 360mm Rear Replacement Rings