I've got a friend selling a 21" RC Imperial with new tire, and single 13" rotor. He has it on an 03 RK. What will I have to do to make it fit my 09 SG?

 

Axle size is different. You would need either new bearings or new axle. You would also have to get a single rotor conversion kit with new sliders. I am not 100% if that's all or if that would even work but those are the 2 things that come to mind

 

axle & bearings

and like he said, if you're not already set up for a single side rotor, you have to go that route as well

 

He has the caliper bracket to relocate that. He said he would help change over to the single rotor. If the bearings are all I need think I'm doing it. Thanks guys.