Its a very fast engine but the fastest .12 engine on the market right now is the jp tl-3t eagle and if you dont believe that come on down to 301 raceway next season and see if you can keep up with it down the long back straight. (P.S.) my murnan modified rb rb r3 is faster that and yes i have raced against the xxl3 it was in a couple of xrays this year I am not saying that it isnt fast its just not faster then the two motors that i spoke of.