Dealer used 3 bathroom scales when I picked up my btx-se and they figured it was 594lbs. No fuel in it. Certainly not the most accurate but gives an idea anyways. Add a little more for the extra track on the mtx
The technology is cool and all, but IMO you are ahead of the game if you run a viper with the MPI 190 kit. If you decide 190 isn't enough, you can upgrade pretty easily.