Girodisc Mercedes A45, CLA45, GLA45 Rear Replacement Rings FA20 For those planning additional modifications

For those planning additional modifications like water or methanol injection

The PCV kit mounts on the right-hand side of the engine bay and runs inline with the 5/8" PCV (positive crankcase ventilation) valve

Involves fuel lines and special care to avoid contamination in a clean environment

Ground clearance may decrease with aftermarket lowering springs or coilovers

Girodisc Mercedes A45, CLA45, GLA45 Rear Replacement Rings FA20 For those planning additional modificationsOur 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.