I agree with all posts above - I've got a silver 10.5 in my blinky sc10 2wd SC and it's great for the price.

I'm swapping 1st place with a tekin powered car - same SC10 and we trade best laps and 1st position by .1's of a second. $35 motor vs $150.....

Only thing I find is that it's a little 'soft' - it doesn't have great feel down low. Plenty of power but not as much down low throttle feel as I would like