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D1-311 Girodisc Audi B9 S4, S5, SQ5 Front Replacement Rings

These D1-311 front replacement rings are sold in pairs with new hardware. Reuse your existing Girodisc aluminum hats. Rings are engineered exclusively for Girodisc hats and will not fit OE or other aftermarket hats.

Vehicle Fitment

Audi S4 (B9) – Front (for A1-311 kits)
Audi S5 (B9) – Front (for A1-311 kits)
Audi SQ5 (B9) – Front (for A1-311 kits)

Service-Friendly Refresh

High-carbon rings with curved vanes manage heat under repeated stops. New drive pins, clips, and Belleville washers restore the floating interface.

Features

Replacement rings only; includes hardware
For Girodisc A1-311 front rotor kits
High-carbon iron, machined in the USA
Curved vane geometry for airflow

D1-311 FAQs

When to replace? Replace at the recommended service thickness or if a crack reaches the outer edge.

Torque specs? Follow the included Girodisc instructions for torque and sequence.

Pad rebedding? Yes—rebed pads after ring replacement.

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