Girodisc BMW F8X, G8X 400mm Front Replacement Rings Ford-FocusRS-2016 ✔ Used by professional motorsport

✔ Used by professional motorsport teams worldwide

Your stock airbox is manufactured under regulations to perform only one job

This IE Aluminum Fuel Rail for VW/Audi 20V 1

Performance Gains: Achieves an increase of 10–15hp and 8–12ft-lb of torque on stock setups

Girodisc BMW F8X, G8X 400mm Front Replacement Rings Ford-FocusRS-2016 ✔ Used by professional motorsportOur 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.