R53 for sure, am not sure if these will fit the R50 best bet would be to have someone chime in on this or check with Craven.
They fit R50 as well. Any Gen 1 MINI. These are a rare find as Red was a limited run color that we haven't made for quite some time. If you feel like you want brand new hardware with these good looking plates, a complete set of new nuts, adapter bolts and washers will run $36. Just PM me.