[Ho Lee Kow]

Hello! I have some older SCX cars with the RX can motors. They are quite slow and I wonder if there is a way to speed them up? The standard cans RX41 and RX81 are only 16,000rpm whereas the likes of the turbo and 41B are 19000 rpm. Is there any treatment to enhance the 16000 rpm motors?

I would buy some speedier RX motors but I cannot find them anywhere.