$100 USD? That is damn cheap for a .21 ci Picco P7R Evo! And surprisingly, for a .21, this engines has an advanced timing profile and it will do a number on several of the .28 engines mentioned earlier.

There are a couple of guys in RCU who mods these and after they get through with the engine and you match it to a good pipe, this engine has some serious power to put onto the track. And every single one of the .28s we mentioned above will not be able to touch an RC equipped with these.