Girodisc BMW F8X 380mm Front Replacement Rings Fuel Rails These D1-122 are only compatible

These D1-122 are only compatible with A1-122 front rotors

Fully Sealed Design: Minimizes heat soak by preventing hot engine bay air from entering the intake

which maintains a stealthy appearance while looking great in your engine bay

Countless design revisions

Girodisc BMW F8X 380mm Front Replacement Rings Fuel Rails These D1-122 are only compatibleOur replacement rings are sold in pairs and include replacement hardware. The only parts you will reuse are your existing GiroDisc hats. Please note that unless specifically noted, GiroDisc replacement rings are only designed to work with GiroDisc hats. They are not designed to be used with other brands, including hats from cars equipped with 2 piece rotors from the factory.