hey, the focus RS is not an american car so I don't know exactly what's changed mechanically, but if the mounting bracket for the caliper is the same then i don't see the problem. Rotor size does not appear any different than the SVT focus rotors.
1999 Silver Frost SVT
#609 of 2760
Quaife, lightened SVT Flywheel, SPEC stage II clutch, removed resonator, k&n drop in - various other goodies too.
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