There is a minor learning curve with these but we are pretty happy with them.

The auto clutches are probably the biggest item to keep up with
because if they are not set up correctly it will produce a lot of heat in the cases which robs power and overheats the stators but once you find the correct combination you should be all set.

The only other thing is that the parts are expensive because cobra makes their own engines and parts. ( or should i say designs them).

We love our cobras, it gives us dads something to do other than wish we could race with our kids. ( ha ha )

Call Paul at Wiley Mods or Brandon Tittle at Tittle brothers, they will give you the straight scoop.