on mine atm i am running an arrma 12T out of the mega series, is quite a bit faster. you will need to get a 19T pinion gear though to make it work, the 550 can motor impacts the motor mounts/transmission. it does cut run times in about half though.I am brand new to RC and I have a 1/10 ruckus 2wd with a 20t dynamite brushed motor. I know brushless is the way to go but I need a cheap brushed option to just get the thing running. Can anybody recommend a good motor for it?