D1-220 Girodisc BMW F8X, G8X 400mm Front Replacement Rings

Price: $980.00

D1-220 are front rings only for Girodisc 400 mm front rotor kits. 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

• BMW G80/G81 M3 with CCB – Front (for A1-322 kits)
• BMW G82/G83 M4 with CCB – Front (for A1-322 kits)
• Also fits applicable F8X 400 mm Girodisc front kits (verify kit number)

Serviceable Two-Piece Design

High-carbon iron rings with curved vanes manage heat under repeated stops. New drive pins, clips, and Belleville washers restore proper float and clamp force when refreshing your rotors.

Features

• Replacement rings only; hardware included
• 400 mm OD; direct fit for Girodisc 400 mm front hats
• High-carbon iron; USA-poured and machined
• Curved-vane cooling geometry
• Sold/priced per pair

D1-220 FAQs

Are these for all G8X front rotors? They fit Girodisc 400 mm hats (e.g., A1-322). They do not fit OE or non-Girodisc hats.

Minimum thickness? Follow Girodisc service spec for your kit; replace sooner if any crack reaches the ring edge.

Can I reuse old hardware? No — always install the supplied new hardware and torque per the instructions.

Do I need to re-bed pads? Yes — re-bed after ring replacement to stabilize the friction layer.

Related Products

• A1-322 Girodisc BMW G8X M3, M4 Front Iron Rotor Conversion
• A2-322 Girodisc BMW G8X M3, M4 Rear Iron Rotor Conversion
• D2-322 Girodisc BMW G8X Iron Conversion Rear Replacement Rings