Addicted to race! Need to keep important spares

[gtxracer]

Run the same ESC for both vehicles if you can, like dual MMM or RX8 setups. Then you don't need a spare since if one blows you can swap the other out between heats.

Get one extra receiver, you shouldn't need an extra transmitter. I always have a cheap stock Tx and Rx just in case, you never know.

Get extra motors if you can, but these don't blow all the time unless they're having problems. I don't think your Neu motors will be a problem with endbell covers.

Keep extra batts handy.