RE: TB-02R - which motor should I get??
I have heard of the 5.5R going 50+ mph in a ST (well people say they do it, I have no true speeds), so if they can do that, I imagine if you gear it prtty hard, and run with some really nice matched packs, 55mph shouldn't be out of your reach.
I saw a video of a 4.5R doing 63mph on GPS in a FT TC4.