Were can I buy reverse gear for terminator xt2

i'm pretty sure you can't. i don't know of any buggy that has a reverse setup, some monster trucks do, but they won't fit your buggy. buggies are designed to race, and reverse is banned in racing, monster trucks are designed for bashing, where no rules apply.

IDK if it will fit but the OFNA DM-one has a buggy type gear box and reverse

just stick the front and rear diffs in the other way round or reverse the polarity of your starter box.

My buggy has reverse

Yeh but it's electric you cheat.

You caught me!

You want reverse get a monster truck.