This is, in my opinion, the best servo setup for the rc18's. It's the same size as the stock servo and fits in using the included hitec servo mounts. Goes right in the only thing you will need it a longer servo horn screw of the right thread. http://www2.towerhobbies.com/cgi-bin...?&I=LXLGJ5&P=M
Works awsome!
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