Girodisc Mercedes A45, CLA45, GLA45 Rear Replacement Rings FA20 The picture (below right) is

The picture (below right) is how it should be done

and all necessary fittings for superior fuel distribution in high-horsepower applications

20psi boost

Cleaner intake air increases engine performance

For those planning additional modifications like water or methanol injection

Girodisc Mercedes A45, CLA45, GLA45 Rear Replacement Rings FA20 The picture (below right) isOur 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.