i dont know what to buy for my revo

[the-king-revo]

one more q:

ok i buy the combo mmm!

so i gust into on the revo and this all?i see revos with 2speed only the tekno kit i need to do this?

i need to buy the tekno kit for to do the revo only with 2speed?i need this mod?is good?
ex:
http://i473.photobucket.com/albums/r..._6363_revo.jpg

http://i473.photobucket.com/albums/r..._6369_revo.jpg

sorry of my English
tal,